1
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Dreimann M, Wahlert F, Roling S, Treusch R, Plönjes E, Zacharias H. Development and performance simulations of a soft X-ray and XUV split-and-delay unit at beamlines FL23/24 at FLASH2 for time-resolved two-color pump-probe experiments. JOURNAL OF SYNCHROTRON RADIATION 2024; 31:1168-1178. [PMID: 39102362 PMCID: PMC11371028 DOI: 10.1107/s160057752400609x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 06/23/2024] [Indexed: 08/07/2024]
Abstract
The split-and-delay unit (SDU) at FLASH2 will be upgraded to enable the simultaneous operation of two temporally, spatially and spectrally separated probe beams when the free-electron laser undulators are operated in a two-color scheme. By means of suitable thin filters and an optical grating beam path a wide range of combinations of photon energies in the spectral range from 150 eV to 780 eV can be chosen. In this paper, simulations of the spectral transmission and performance parameters of the filter technique are discussed, along with a monochromator with dispersion compensation presently under construction.
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Affiliation(s)
- Matthias Dreimann
- Center for Soft NanoscienceUniversität MünsterBusso-Peus-Strasse 1048149MünsterGermany
| | - Frank Wahlert
- Physikalisches InstitutUniversität MünsterWilhelm-Klemm-Strasse 1048149MünsterGermany
| | - Sebastian Roling
- Physikalisches InstitutUniversität MünsterWilhelm-Klemm-Strasse 1048149MünsterGermany
| | - Rolf Treusch
- Deutsches Elektronen-Synchrotron DESYNotkestrasse 8522607HamburgGermany
| | - Elke Plönjes
- Deutsches Elektronen-Synchrotron DESYNotkestrasse 8522607HamburgGermany
| | - Helmut Zacharias
- Center for Soft NanoscienceUniversität MünsterBusso-Peus-Strasse 1048149MünsterGermany
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2
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Razmus WO, Allum F, Harries J, Kumagai Y, Nagaya K, Bhattacharyya S, Britton M, Brouard M, Bucksbaum PH, Cheung K, Crane SW, Fushitani M, Gabalski I, Gejo T, Ghrist A, Heathcote D, Hikosaka Y, Hishikawa A, Hockett P, Jones E, Kukk E, Iwayama H, Lam HVS, McManus JW, Milesevic D, Mikosch J, Minemoto S, Niozu A, Orr-Ewing AJ, Owada S, Rolles D, Rudenko A, Townsend D, Ueda K, Unwin J, Vallance C, Venkatachalam A, Wada SI, Walmsley T, Warne EM, Woodhouse JL, Burt M, Ashfold MNR, Minns RS, Forbes R. Exploring the ultrafast and isomer-dependent photodissociation of iodothiophenes via site-selective ionization. Phys Chem Chem Phys 2024; 26:12725-12737. [PMID: 38616653 DOI: 10.1039/d3cp06079a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
C-I bond extension and fission following ultraviolet (UV, 262 nm) photoexcitation of 2- and 3-iodothiophene is studied using ultrafast time-resolved extreme ultraviolet (XUV) ionization in conjunction with velocity map ion imaging. The photoexcited molecules and eventual I atom products are probed by site-selective ionization at the I 4d edge using intense XUV pulses, which induce multiple charges initially localized to the iodine atom. At C-I separations below the critical distance for charge transfer (CT), charge can redistribute around the molecule leading to Coulomb explosion and charged fragments with high kinetic energy. At greater C-I separations, beyond the critical distance, CT is no longer possible and the measured kinetic energies of the charged iodine atoms report on the neutral dissociation process. The time and momentum resolved measurements allow determination of the timescales and the respective product momentum and kinetic energy distributions for both isomers, which are interpreted in terms of rival 'direct' and 'indirect' dissociation pathways. The measurements are compared with a classical over the barrier model, which reveals that the onset of the indirect dissociation process is delayed by ∼1 ps relative to the direct process. The kinetics of the two processes show no discernible difference between the two parent isomers, but the branching between the direct and indirect dissociation channels and the respective product momentum distributions show isomer dependencies. The greater relative yield of indirect dissociation products from 262 nm photolysis of 3-iodothiophene (cf. 2-iodothiophene) is attributed to the different partial cross-sections for (ring-centred) π∗ ← π and (C-I bond localized) σ∗ ← (n/π) excitation in the respective parent isomers.
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Affiliation(s)
- Weronika O Razmus
- School of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, UK.
| | - Felix Allum
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
- PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
| | | | - Yoshiaki Kumagai
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Kiyonobu Nagaya
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - Surjendu Bhattacharyya
- J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - Mathew Britton
- PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Mark Brouard
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Philip H Bucksbaum
- PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Kieran Cheung
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Stuart W Crane
- Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Mizuho Fushitani
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa, Nagoya, Aichi 464-8602, Japan
| | - Ian Gabalski
- PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
- Department of Applied Physics, Stanford University, Stanford, California 94305, USA
| | - Tatsuo Gejo
- Graduate School of Material Science, University of Hyogo, Kuoto 3-2-1, Kamigori-cho, Ako-gun, Hyogo 678-1297, Japan
| | - Aaron Ghrist
- PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
- Department of Applied Physics, Stanford University, Stanford, California 94305, USA
| | - David Heathcote
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Yasumasa Hikosaka
- Institute of Liberal Arts and Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Akiyoshi Hishikawa
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa, Nagoya, Aichi 464-8602, Japan
- Research Center for Materials Science, Nagoya University, Furo-cho, Chikusa, Nagoya, Aichi 464-8602, Japan
| | - Paul Hockett
- National Research Council of Canada, 100 Sussex Dr, Ottawa, ON K1A 0R6, Canada
| | - Ellen Jones
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Edwin Kukk
- Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | | | - Huynh V S Lam
- J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - Joseph W McManus
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Dennis Milesevic
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Jochen Mikosch
- Department of Physics, University of Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany
| | - Shinichirou Minemoto
- Department of Physics, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Akinobu Niozu
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Andrew J Orr-Ewing
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Shigeki Owada
- RIKEN SPring-8 Center, Sayo, Hyogo, 679-5148, Japan
- Japan Synchrotron Radiation Research Institute, Hyogo, Japan
| | - Daniel Rolles
- J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - Artem Rudenko
- J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - Dave Townsend
- Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Kiyoshi Ueda
- Department of Chemistry, Tohoku University, Sendai 980-8578, Japan
- Department of Condensed Matter Physics and Photon Science, School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - James Unwin
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Claire Vallance
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Anbu Venkatachalam
- J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - Shin-Ichi Wada
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Tiffany Walmsley
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Emily M Warne
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Joanne L Woodhouse
- School of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, UK.
| | - Michael Burt
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Michael N R Ashfold
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Russell S Minns
- School of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, UK.
| | - Ruaridh Forbes
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
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3
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Pratt ST, Jacovella U, Gans B, Bozek JD, Holland DMP. Resonant Auger decay of dissociating CH3I near the I 4d threshold. J Chem Phys 2024; 160:074304. [PMID: 38375906 DOI: 10.1063/5.0190794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 01/22/2024] [Indexed: 02/21/2024] Open
Abstract
Resonant Auger processes provide a unique perspective on electronic interactions and excited vibrational and electronic states of molecular ions. Here, new data are presented on the resonant Auger decay of excited CH3I in the region just below the I 4d-1 ionization threshold. The resonances include the Rydberg series converging to the five spin-orbit and ligand-field split CH3I (I 4d-1) thresholds, as well as resonances corresponding to excitation from the I 4d5/2,3/2 orbitals into the σ* lowest unoccupied molecular orbital. This study focuses on participator decay that populates the lowest lying states of CH3I+, in particular, the X̃2E3/2 and 2E1/2 states, and on spectator decay that populates the lowest-lying (CH3I2+)σ* states of CH3I+. The CH3I (I 4d-1)σ* resonances are broad, and dissociation to CH3 + I competes with the autoionization of the core-excited states. Auger decay as the molecule dissociates produces a photoelectron spectrum with a long progression (up to v3+ ∼ 25) in the C-I stretching mode of the X̃2E3/2 and 2E1/2 states, providing insights into the shape of the dissociative core-excited surface. The observed spectator decay processes indicate that CH3I+ is formed on the repulsive wall of the lower-lying (CH3I2+)σ* potentials, and the photon-energy dependence of the processes provides insights into the relative slopes of the (4d-1)σ* and (CH3I2+)σ* potential surfaces. Data are also presented for the spectator decay of higher lying CH3I (I 4d-1)nl Rydberg resonances. Photoelectron angular distributions for the resonant Auger processes provide additional information that helps distinguish these processes from the direct ionization signal.
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Affiliation(s)
- Stephen T Pratt
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Ugo Jacovella
- Institut des Sciences Moléculaires d'Orsay, CNRS, Université Paris-Saclay, F-91405 Orsay, France
| | - Bérenger Gans
- Institut des Sciences Moléculaires d'Orsay, CNRS, Université Paris-Saclay, F-91405 Orsay, France
| | - John D Bozek
- Synchrotron SOLEIL, L'Orme des Merisiers, Départmentale 128, 91190 Saint-Aubin, France
| | - David M P Holland
- STFC, Daresbury Laboratory, Daresbury, Warrington, Cheshire WA4 4AD, United Kingdom
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4
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Walmsley T, Unwin J, Allum F, Bari S, Boll R, Borne K, Brouard M, Bucksbaum P, Ekanayake N, Erk B, Forbes R, Howard AJ, Eng-Johnsson P, Lee JWL, Liu Z, Manschwetus B, Mason R, Passow C, Peschel J, Rivas D, Rolles D, Rörig A, Rouzée A, Vallance C, Ziaee F, Burt M. Characterizing the multi-dimensional reaction dynamics of dihalomethanes using XUV-induced Coulomb explosion imaging. J Chem Phys 2023; 159:144302. [PMID: 37823458 DOI: 10.1063/5.0172749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 09/27/2023] [Indexed: 10/13/2023] Open
Abstract
Site-selective probing of iodine 4d orbitals at 13.1 nm was used to characterize the photolysis of CH2I2 and CH2BrI initiated at 202.5 nm. Time-dependent fragment ion momenta were recorded using Coulomb explosion imaging mass spectrometry and used to determine the structural dynamics of the dissociating molecules. Correlations between these fragment momenta, as well as the onset times of electron transfer reactions between them, indicate that each molecule can undergo neutral three-body photolysis. For CH2I2, the structural evolution of the neutral molecule was simultaneously characterized along the C-I and I-C-I coordinates, demonstrating the sensitivity of these measurements to nuclear motion along multiple degrees of freedom.
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Affiliation(s)
- T Walmsley
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
| | - J Unwin
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
| | - F Allum
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
| | - S Bari
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - R Boll
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - K Borne
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - M Brouard
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
| | - P Bucksbaum
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - N Ekanayake
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - B Erk
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - R Forbes
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - A J Howard
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - P Eng-Johnsson
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - J W L Lee
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Z Liu
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
| | - B Manschwetus
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - R Mason
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
| | - C Passow
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - J Peschel
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - D Rivas
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - D Rolles
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - A Rörig
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - A Rouzée
- Max-Born-Institute, Max-Born-Straße 2A, 12489 Berlin, Germany
| | - C Vallance
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
| | - F Ziaee
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - M Burt
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
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5
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Zhang L, Li Z, Liu D, Wu C, Xu H, Li Z. Entangled X-Ray Photon Pair Generation by Free-Electron Lasers. PHYSICAL REVIEW LETTERS 2023; 131:073601. [PMID: 37656859 DOI: 10.1103/physrevlett.131.073601] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 06/06/2023] [Accepted: 07/14/2023] [Indexed: 09/03/2023]
Abstract
We investigate entangled x-ray photon pair emissions in a free-electron laser (FEL) and establish a quantum electrodynamical theory for coherently amplified entangled photon pair emission from microbunched electron pulses in the undulator. We provide a scheme to generate highly entangled x-ray photon pairs and numerically demonstrate the properties of entangled emission, which is of great importance in x-ray quantum optics. Our work shows a unique advantage of FELs in entangled x-ray photon pair generation.
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Affiliation(s)
- Linfeng Zhang
- State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China
| | - Zunqi Li
- State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China
| | - Dongyu Liu
- State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China
- Physics Department, Stanford University, California 94305, USA
| | - Chengyin Wu
- State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
- Peking University Yangtze Delta Institute of Optoelectronics, Nantong, Jiangsu 226010, China
| | - Haitan Xu
- School of Materials Science and Intelligent Engineering, Nanjing University, Suzhou, Jiangsu 215163, China
- Shishan Laboratory, Nanjing University, Suzhou, Jiangsu 215163, China
- School of Physical Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zheng Li
- State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
- Peking University Yangtze Delta Institute of Optoelectronics, Nantong, Jiangsu 226010, China
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6
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Crane SW, Lee JWL, Ashfold MNR, Rolles D. Molecular photodissociation dynamics revealed by Coulomb explosion imaging. Phys Chem Chem Phys 2023. [PMID: 37335247 DOI: 10.1039/d3cp01740k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
Coulomb explosion imaging (CEI) methods are finding ever-growing use as a means of exploring and distinguishing the static stereo-configurations of small quantum systems (molecules, clusters, etc). CEI experiments initiated by ultrafast (femtosecond-duration) laser pulses also allow opportunities to track the time-evolution of molecular structures, and thereby advance understanding of molecular fragmentation processes. This Perspective illustrates two emerging families of dynamical studies. 'One-colour' studies (employing strong field ionisation driven by intense near infrared or single X-ray or extreme ultraviolet laser pulses) afford routes to preparing multiply charged molecular cations and exploring how their fragmentation progresses from valence-dominated to Coulomb-dominated dynamics with increasing charge and how this evolution varies with molecular size and composition. 'Two-colour' studies use one ultrashort laser pulse to create electronically excited neutral molecules (or monocations), whose structural evolution is then probed as a function of pump-probe delay using an ultrafast ionisation pulse along with time and position-sensitive detection methods. This latter type of experiment has the potential to return new insights into not just molecular fragmentation processes but also charge transfer processes between moieties separating with much better defined stereochemical control than in contemporary ion-atom and ion-molecule charge transfer studies.
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Affiliation(s)
- Stuart W Crane
- School of Chemistry, University of Bristol, Bristol, BS8 1TS, UK.
| | - Jason W L Lee
- Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
| | | | - Daniel Rolles
- J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS 66506, USA
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7
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Zhou J, Jia S, Hu X, Wang E, Xue X, Wu Y, Wang J, Dorn A, Ren X. Intermolecular Charge Transfer Induced Fragmentation of Formic Acid Dimers. PHYSICAL REVIEW LETTERS 2023; 130:233001. [PMID: 37354420 DOI: 10.1103/physrevlett.130.233001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 01/19/2023] [Accepted: 04/20/2023] [Indexed: 06/26/2023]
Abstract
We investigate the intermolecular nonradiative charge transfer process in a double hydrogen-bonded formic acid (FA) dimer, initiated by electron-collision induced double ionization of one FA molecule. Through fragment ions and electron coincident momentum measurements and ab initio calculations, we obtain direct evidence that electron transfer from the neighboring FA molecule to fill one of the two vacancies occurs by a potential energy curve crossing of FA^{++}+FA with FA^{+}+FA^{+*} curves, forming an electronic excited state of dicationic dimers. This process causes the breaking of two hydrogen bonds and subsequently the cleavage of C─H and C─O covalent bonds in the dimers, which is expected to be a general phenomenon occurring in molecular complexes and can have important implications for radiation damage to biological matter.
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Affiliation(s)
- Jiaqi Zhou
- School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
| | - Shaokui Jia
- School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
| | - Xiaoqing Hu
- Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
| | - Enliang Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
| | - Xiaorui Xue
- School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yong Wu
- Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
| | - Jianguo Wang
- Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
| | - Alexander Dorn
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Xueguang Ren
- School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
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8
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Wang E, Kling NG, LaForge AC, Obaid R, Pathak S, Bhattacharyya S, Meister S, Trost F, Lindenblatt H, Schoch P, Kübel M, Pfeifer T, Rudenko A, Díaz-Tendero S, Martín F, Moshammer R, Rolles D, Berrah N. Ultrafast Roaming Mechanisms in Ethanol Probed by Intense Extreme Ultraviolet Free-Electron Laser Radiation: Electron Transfer versus Proton Transfer. J Phys Chem Lett 2023; 14:4372-4380. [PMID: 37140167 DOI: 10.1021/acs.jpclett.2c03764] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Ultrafast H2+ and H3+ formation from ethanol is studied using pump-probe spectroscopy with an extreme ultraviolet (XUV) free-electron laser. The first pulse creates a dication, triggering H2 roaming that leads to H2+ and H3+ formation, which is disruptively probed by a second pulse. At photon energies of 28 and 32 eV, the ratio of H2+ to H3+ increases with time delay, while it is flat at a photon energy of 70 eV. The delay-dependent effect is ascribed to a competition between electron and proton transfer. High-level quantum chemistry calculations show a flat potential energy surface for H2 formation, indicating that the intermediate state may have a long lifetime. The ab initio molecular dynamics simulation confirms that, in addition to the direct emission, a small portion of H2 undergoes a roaming mechanism that leads to two competing pathways: electron transfer from H2 to C2H4O2+ and proton transfer from C2H4O2+ to H2.
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Affiliation(s)
- Enliang Wang
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506-2604, United States
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
| | - Nora G Kling
- Physics Department, University of Connecticut, Storrs, Connecticut 06269-3046, United States
| | - Aaron C LaForge
- Physics Department, University of Connecticut, Storrs, Connecticut 06269-3046, United States
| | - Razib Obaid
- Physics Department, University of Connecticut, Storrs, Connecticut 06269-3046, United States
| | - Shashank Pathak
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506-2604, United States
| | - Surjendu Bhattacharyya
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506-2604, United States
| | - Severin Meister
- Max Planck Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Florian Trost
- Max Planck Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Hannes Lindenblatt
- Max Planck Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Patrizia Schoch
- Max Planck Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Matthias Kübel
- Institute of Optics and Quantum Electronics, Friedrich Schiller University Jena, D-07743 Jena, Germany
- Helmholtz Institute Jena, Fröbelstieg 3, 07743 Jena, Germany
| | - Thomas Pfeifer
- Max Planck Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Artem Rudenko
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506-2604, United States
| | - Sergio Díaz-Tendero
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Fernando Martín
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nano), Campus de Cantoblanco, 28049 Madrid, Spain
| | - Robert Moshammer
- Max Planck Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Daniel Rolles
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506-2604, United States
| | - Nora Berrah
- Physics Department, University of Connecticut, Storrs, Connecticut 06269-3046, United States
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9
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Howard AJ, Britton M, Streeter ZL, Cheng C, Forbes R, Reynolds JL, Allum F, McCracken GA, Gabalski I, Lucchese RR, McCurdy CW, Weinacht T, Bucksbaum PH. Filming enhanced ionization in an ultrafast triatomic slingshot. Commun Chem 2023; 6:81. [PMID: 37106058 PMCID: PMC10140156 DOI: 10.1038/s42004-023-00882-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
Filming atomic motion within molecules is an active pursuit of molecular physics and quantum chemistry. A promising method is laser-induced Coulomb Explosion Imaging (CEI) where a laser pulse rapidly ionizes many electrons from a molecule, causing the remaining ions to undergo Coulomb repulsion. The ion momenta are used to reconstruct the molecular geometry which is tracked over time (i.e., filmed) by ionizing at an adjustable delay with respect to the start of interatomic motion. Results are distorted, however, by ultrafast motion during the ionizing pulse. We studied this effect in water and filmed the rapid "slingshot" motion that enhances ionization and distorts CEI results. Our investigation uncovered both the geometry and mechanism of the enhancement which may inform CEI experiments in many other polyatomic molecules.
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Affiliation(s)
- Andrew J Howard
- Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA.
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
| | - Mathew Britton
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Department of Physics, Stanford University, Stanford, CA, 94305, USA
| | - Zachary L Streeter
- Department of Chemistry, University of California, Davis, Davis, CA, 95616, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Chuan Cheng
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Ruaridh Forbes
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Joshua L Reynolds
- Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA
| | - Felix Allum
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Gregory A McCracken
- Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - Ian Gabalski
- Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - Robert R Lucchese
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - C William McCurdy
- Department of Chemistry, University of California, Davis, Davis, CA, 95616, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Thomas Weinacht
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Philip H Bucksbaum
- Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA.
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
- Department of Physics, Stanford University, Stanford, CA, 94305, USA.
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.
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10
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Ho PJ, Ray D, Lehmann CS, Fouda AEA, Dunford RW, Kanter EP, Doumy G, Young L, Walko DA, Zheng X, Cheng L, Southworth SH. X-ray induced electron and ion fragmentation dynamics in IBr. J Chem Phys 2023; 158:134304. [PMID: 37031139 DOI: 10.1063/5.0145215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023] Open
Abstract
Characterization of the inner-shell decay processes in molecules containing heavy elements is key to understanding x-ray damage of molecules and materials and for medical applications with Auger-electron-emitting radionuclides. The 1s hole states of heavy atoms can be produced by absorption of tunable x rays and the resulting vacancy decays characterized by recording emitted photons, electrons, and ions. The 1s hole states in heavy elements have large x-ray fluorescence yields that transfer the hole to intermediate electron shells that then decay by sequential Auger-electron transitions that increase the ion’s charge state until the final state is reached. In molecules, the charge is spread across the atomic sites, resulting in dissociation to energetic atomic ions. We have used x-ray/ion coincidence spectroscopy to measure charge states and energies of I q+ and Br q′+ atomic ions following 1s ionization at the I and Br K-edges of IBr. We present the charge states and kinetic energies of the two correlated fragment ions associated with core-excited states produced during the various steps of the cascades. To understand the dynamics leading to the ion data, we develop a computational model that combines Monte-Carlo/Molecular-Dynamics (MC/MD) simulations with a classical over-the-barrier model to track inner-shell cascades and redistribution of electrons in valence orbitals and nuclear motion of fragments.
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Affiliation(s)
- Phay J. Ho
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Dipanwita Ray
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - C. Stefan Lehmann
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Adam E. A. Fouda
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Robert W. Dunford
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Elliot P. Kanter
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Gilles Doumy
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Linda Young
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
- The James Franck Institute and Department of Physics, The University of Chicago, Chicago, Illinois 60637, USA
| | - Donald A. Walko
- Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Xuechen Zheng
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Lan Cheng
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Stephen H. Southworth
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
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11
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Kukk E, Pihlava L, Kooser K, Stråhlman C, Maclot S, Kivimäki A. Energy-dependent timescales in the dissociation of diiodothiophene dication. Phys Chem Chem Phys 2023; 25:5795-5807. [PMID: 36744651 DOI: 10.1039/d2cp05309h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Photodissociation molecular dynamics of gas-phase 2,5-diiodothiophene molecules was studied in an electron-energy-resolved electron-multi-ion coincidence experiment performed at the FinEstBeAMS beamline of MAX IV synchrotron. Following the photoionization of the iodine 4d subshell and the Auger decay, the dissociation landscape of the molecular dication was investigated as a function of the Auger electron energy. Concentrating on an major dissociation pathway, C4H2I2S2+ → C4H2S+ + I+ + I, and accessing the timescales of the process via ion momentum correlation analysis, it was revealed how this three-body process changes depending on the available internal energy. Using a generalized secondary dissociation model, the process was shown to evolve from secondary dissociation regime towards concerted dissociation as the available energy increased, with the secondary dissociation time constant changing from 1.5 ps to 129 fs. The experimental results were compared with simulations using a stochastic charge-hopping molecular mechanics model. It represented the observed trend and also gave a fair quantitative agreement with the experiment.
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Affiliation(s)
- Edwin Kukk
- Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland. .,CNRS, Laboratoire de Chimie Physique - Matière et Rayonnement, 4 Pl. Jussieu, 75005, Paris, France
| | - Lassi Pihlava
- Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland.
| | - Kuno Kooser
- Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland. .,Institute of Physics, University of Tartu, W. Ostwaldi 1, EE-50411 Tartu, Estonia
| | - Christian Stråhlman
- Department of Materials Science and Applied Mathematics, Malmö University, SE-20506 Malmö, Sweden
| | - Sylvain Maclot
- Department of Physics, Gothenburg University, Box 100, SE-40530 Gothenburg, Sweden
| | - Antti Kivimäki
- MAX IV Laboratory, Lund University, SE-22100 Lund, Sweden
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12
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Chen L, Wang E, Zhao W, Gong M, Shan X, Chen X. Fragmentation of SO 2 q+ (q = 2-4) induced by 1 keV electron collision. J Chem Phys 2023; 158:054301. [PMID: 36754782 DOI: 10.1063/5.0134007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
We report an investigation on the fragmentation dynamics of SO2 q+ (q = 2-4) induced by 1 keV electron collision utilizing an ion momentum imaging spectrometer. Six complete Coulomb explosion channels were observed using the time-of-flight correlation map. The kinetic energy release distributions for these channels were obtained and compared with those available in the literature. The fragmentation mechanisms of the three-body dissociation channels were analyzed by the Dalitz plots and Newton diagrams. Both concerted breakup and sequential fragmentation pathways were identified in the channel SO2 3+ → O+ + O+ + S+, whereas only the concerted breakup mechanism was confirmed for the channels SO2 4+ → O+ + O+ + S2+ and SO2 4+ → O2+ + O+ + S+. Using the Coulomb explosion model, we determined the molecular geometry from the concerted fragmentation channels, and the obtained bond lengths and angles from the higher kinetic energy release peaks are close to that of the neutral SO2 obtained by high-level quantum chemical calculation. The present results indicate that the electron impact experiment is a potential tool for the Coulomb explosion imaging of small molecules.
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Affiliation(s)
- Lei Chen
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
| | - Enliang Wang
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
| | - Wenchao Zhao
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
| | - Maomao Gong
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
| | - Xu Shan
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
| | - Xiangjun Chen
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
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13
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Onvlee J, Trippel S, Küpper J. Ultrafast light-induced dynamics in the microsolvated biomolecular indole chromophore with water. Nat Commun 2022; 13:7462. [PMID: 36460654 PMCID: PMC9718776 DOI: 10.1038/s41467-022-33901-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 10/04/2022] [Indexed: 12/05/2022] Open
Abstract
Interactions between proteins and their solvent environment can be studied in a bottom-up approach using hydrogen-bonded chromophore-solvent clusters. The ultrafast dynamics following UV-light-induced electronic excitation of the chromophores, potential radiation damage, and their dependence on solvation are important open questions. The microsolvation effect is challenging to study due to the inherent mix of the produced gas-phase aggregates. We use the electrostatic deflector to spatially separate different molecular species in combination with pump-probe velocity-map-imaging experiments. We demonstrate that this powerful experimental approach reveals intimate details of the UV-induced dynamics in the near-UV-absorbing prototypical biomolecular indole-water system. We determine the time-dependent appearance of the different reaction products and disentangle the occurring ultrafast processes. This approach ensures that the reactants are well-known and that detailed characteristics of the specific reaction products are accessible - paving the way for the complete chemical-reactivity experiment.
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Affiliation(s)
- Jolijn Onvlee
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607, Hamburg, Germany
- Center for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
- Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - Sebastian Trippel
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607, Hamburg, Germany
- Center for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Jochen Küpper
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607, Hamburg, Germany.
- Center for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany.
- Department of Physics, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany.
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14
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Perspectives of Gas Phase Ion Chemistry: Spectroscopy and Modeling. CONDENSED MATTER 2022. [DOI: 10.3390/condmat7030046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The study of ions in the gas phase has a long history and has involved both chemists and physicists. The interplay of their competences with the use of very sophisticated commercial and/or homemade instrumentations and theoretical models has improved the knowledge of thermodynamics and kinetics of many chemical reactions, even if still many stages of these processes need to be fully understood. The new technologies and the novel free-electron laser facilities based on plasma acceleration open new opportunities to investigate the chemical reactions in some unrevealed fundamental aspects. The synchrotron light source can be put beside the FELs, and by mass spectrometric techniques and spectroscopies coupled with versatile ion sources it is possible to really change the state of the art of the ion chemistry in different areas such as atmospheric and astro chemistry, plasma chemistry, biophysics, and interstellar medium (ISM). In this manuscript we review the works performed by a joint combination of the experimental studies of ion–molecule reactions with synchrotron radiation and theoretical models adapted and developed to the experimental evidence. The review concludes with the perspectives of ion–molecule reactions by using FEL instrumentations as well as pump probe measurements and the initial attempt in the development of more realistic theoretical models for the prospective improvement of our predictive capability.
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15
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Allum F, Music V, Inhester L, Boll R, Erk B, Schmidt P, Baumann TM, Brenner G, Burt M, Demekhin PV, Dörner S, Ehresmann A, Galler A, Grychtol P, Heathcote D, Kargin D, Larsson M, Lee JWL, Li Z, Manschwetus B, Marder L, Mason R, Meyer M, Otto H, Passow C, Pietschnig R, Ramm D, Schubert K, Schwob L, Thomas RD, Vallance C, Vidanović I, von Korff Schmising C, Wagner R, Walter P, Zhaunerchyk V, Rolles D, Bari S, Brouard M, Ilchen M. A localized view on molecular dissociation via electron-ion partial covariance. Commun Chem 2022; 5:42. [PMID: 36697752 PMCID: PMC9814695 DOI: 10.1038/s42004-022-00656-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 02/21/2022] [Indexed: 02/01/2023] Open
Abstract
Inner-shell photoelectron spectroscopy provides an element-specific probe of molecular structure, as core-electron binding energies are sensitive to the chemical environment. Short-wavelength femtosecond light sources, such as Free-Electron Lasers (FELs), even enable time-resolved site-specific investigations of molecular photochemistry. Here, we study the ultraviolet photodissociation of the prototypical chiral molecule 1-iodo-2-methylbutane, probed by extreme-ultraviolet (XUV) pulses from the Free-electron LASer in Hamburg (FLASH) through the ultrafast evolution of the iodine 4d binding energy. Methodologically, we employ electron-ion partial covariance imaging as a technique to isolate otherwise elusive features in a two-dimensional photoelectron spectrum arising from different photofragmentation pathways. The experimental and theoretical results for the time-resolved electron spectra of the 4d3/2 and 4d5/2 atomic and molecular levels that are disentangled by this method provide a key step towards studying structural and chemical changes from a specific spectator site.
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Affiliation(s)
- Felix Allum
- The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK.
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
| | - Valerija Music
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Straße 40, D-34132, Kassel, Germany
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Ludger Inhester
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany.
| | - Rebecca Boll
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany
| | - Benjamin Erk
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Philipp Schmidt
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Straße 40, D-34132, Kassel, Germany
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany
| | | | - Günter Brenner
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Michael Burt
- The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
| | - Philipp V Demekhin
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Straße 40, D-34132, Kassel, Germany
| | - Simon Dörner
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Arno Ehresmann
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Straße 40, D-34132, Kassel, Germany
| | | | | | - David Heathcote
- The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
| | - Denis Kargin
- Institut für Chemie, Universität Kassel, Heinrich-Plett-Straße 40, D-34132, Kassel, Germany
| | - Mats Larsson
- Stockholm University, AlbaNova University Center, 114 21, Stockholm, Sweden
| | - Jason W L Lee
- The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Zheng Li
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, 100871, China
| | - Bastian Manschwetus
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Lutz Marder
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Straße 40, D-34132, Kassel, Germany
| | - Robert Mason
- The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
| | - Michael Meyer
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany
| | - Huda Otto
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Straße 40, D-34132, Kassel, Germany
| | - Christopher Passow
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Rudolf Pietschnig
- Institut für Chemie, Universität Kassel, Heinrich-Plett-Straße 40, D-34132, Kassel, Germany
| | - Daniel Ramm
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Kaja Schubert
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Lucas Schwob
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Richard D Thomas
- Stockholm University, AlbaNova University Center, 114 21, Stockholm, Sweden
| | - Claire Vallance
- The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
| | - Igor Vidanović
- Institut für Chemie, Universität Kassel, Heinrich-Plett-Straße 40, D-34132, Kassel, Germany
| | | | - René Wagner
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany
| | - Peter Walter
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | | | - Daniel Rolles
- J. R. Macdonald Laboratory, Physics Department, Kansas State University, 1228 Martin Luther King Jr. Dr., Manhattan, KS, 66506, USA
| | - Sadia Bari
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Mark Brouard
- The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
| | - Markus Ilchen
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Straße 40, D-34132, Kassel, Germany.
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany.
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany.
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16
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Rebholz M, Ding T, Aufleger L, Hartmann M, Meyer K, Stooß V, Magunia A, Wachs D, Birk P, Mi Y, Borisova GD, da Costa Castanheira C, Rupprecht P, Magrakvelidze M, Thumm U, Roling S, Butz M, Zacharias H, Düsterer S, Treusch R, Brenner G, Ott C, Pfeifer T. XUV-Initiated Dissociation Dynamics of Molecular Oxygen (O 2). J Phys Chem A 2021; 125:10138-10143. [PMID: 34788037 PMCID: PMC8647076 DOI: 10.1021/acs.jpca.1c06033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
We
performed a time-resolved spectroscopy experiment on the dissociation
of oxygen molecules after the interaction with intense extreme-ultraviolet
(XUV) light from the free-electron laser in Hamburg at Deutsches Elektronen-Synchrotron.
Using an XUV-pump/XUV-probe transient-absorption geometry with a split-and-delay
unit, we observe the onset of electronic transitions in the O2+ cation near 50 eV photon energy, marking the end of
the progression from a molecule to two isolated atoms. We observe
two different time scales of 290 ± 53 and 180 ± 76 fs
for the emergence of different ionic transitions, indicating different
dissociation pathways taken by the departing oxygen atoms. With regard
to the emerging opportunities of tuning the central frequencies of
pump and probe pulses and of increasing the probe–pulse bandwidth,
future pump–probe transient-absorption experiments are expected
to provide a detailed view of the coupled nuclear and electronic dynamics
during molecular dissociation.
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Affiliation(s)
- Marc Rebholz
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg 69117, Germany
| | - Thomas Ding
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg 69117, Germany
| | - Lennart Aufleger
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg 69117, Germany
| | - Maximilian Hartmann
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg 69117, Germany
| | - Kristina Meyer
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg 69117, Germany
| | - Veit Stooß
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg 69117, Germany
| | - Alexander Magunia
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg 69117, Germany
| | - David Wachs
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg 69117, Germany
| | - Paul Birk
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg 69117, Germany
| | - Yonghao Mi
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg 69117, Germany
| | | | | | - Patrick Rupprecht
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg 69117, Germany
| | - Maia Magrakvelidze
- Cabrini University, 610 King Of Prussia Road, Radnor, Pennsylvania 19087, United States
| | - Uwe Thumm
- Kansas State University, 212 Cardwell Hall, Manhattan, Kansas 66506, United States
| | - Sebastian Roling
- Physikalisches Institut, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Str. 10, Münster 48149, Germany
| | - Marco Butz
- Physikalisches Institut, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Str. 10, Münster 48149, Germany
| | - Helmut Zacharias
- Physikalisches Institut, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Str. 10, Münster 48149, Germany
| | - Stefan Düsterer
- Deutsches Elektronen-Synchrotron, Notkestraße 85, Hamburg 22607, Germany
| | - Rolf Treusch
- Deutsches Elektronen-Synchrotron, Notkestraße 85, Hamburg 22607, Germany
| | - Günter Brenner
- Deutsches Elektronen-Synchrotron, Notkestraße 85, Hamburg 22607, Germany
| | - Christian Ott
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg 69117, Germany
| | - Thomas Pfeifer
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg 69117, Germany
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17
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Crane SW, Ge L, Cooper GA, Carwithen BP, Bain M, Smith JA, Hansen CS, Ashfold MNR. Nonadiabatic Coupling Effects in the 800 nm Strong-Field Ionization-Induced Coulomb Explosion of Methyl Iodide Revealed by Multimass Velocity Map Imaging and Ab Initio Simulation Studies. J Phys Chem A 2021; 125:9594-9608. [PMID: 34709807 DOI: 10.1021/acs.jpca.1c06346] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Coulomb explosion (CE) of jet-cooled CH3I molecules using ultrashort (40 fs), nonresonant 805 nm strong-field ionization at three peak intensities (260, 650, and 1300 TW cm-2) has been investigated by multimass velocity map imaging, revealing an array of discernible fragment ions, that is, Iq+ (q ≤ 6), CHn+ (n = 0-3), CHn2+ (n = 0, 2), C3+, H+, H2+, and H3+. Complementary ab initio trajectory calculations of the CE of CH3IZ+ cations with Z ≤ 14 identify a range of behaviors. The CE of parent cations with Z = 2 and 3 can be well-described using a diatomic-like representation (as found previously) but the CE dynamics of all higher CH3IZ+ cations require a multidimensional description. The ab initio predicted Iq+ (q ≥ 3) fragment ion velocities are all at the high end of the velocity distributions measured for the corresponding Iq+ products. These mismatches are proposed as providing some of the clearest insights yet into the roles of nonadiabatic effects (and intramolecular charge transfer) in the CE of highly charged molecular cations.
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Affiliation(s)
- Stuart W Crane
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
| | - Lingfeng Ge
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
| | - Graham A Cooper
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
| | - Ben P Carwithen
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
| | - Matthew Bain
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
| | - James A Smith
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
| | - Christopher S Hansen
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
| | - Michael N R Ashfold
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
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18
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Hohenstein EG, Yu JK, Bannwarth C, List NH, Paul AC, Folkestad SD, Koch H, Martínez TJ. Predictions of Pre-edge Features in Time-Resolved Near-Edge X-ray Absorption Fine Structure Spectroscopy from Hole-Hole Tamm-Dancoff-Approximated Density Functional Theory. J Chem Theory Comput 2021; 17:7120-7133. [PMID: 34623139 DOI: 10.1021/acs.jctc.1c00478] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Time-resolved near-edge X-ray absorption fine structure (TR-NEXAFS) spectroscopy is a powerful technique for studying photochemical reaction dynamics with femtosecond time resolution. In order to avoid ambiguity in TR-NEXAFS spectra from nonadiabatic dynamics simulations, core- and valence-excited states must be evaluated on equal footing and those valence states must also define the potential energy surfaces used in the nonadiabatic dynamics simulation. In this work, we demonstrate that hole-hole Tamm-Dancoff-approximated density functional theory (hh-TDA) is capable of directly simulating TR-NEXAFS spectroscopies. We apply hh-TDA to the excited-state dynamics of acrolein. We identify two pre-edge features in the oxygen K-edge TR-NEXAFS spectrum associated with the S2 (ππ*) and S1 (nπ*) excited states. We show that these features can be used to follow the internal conversion dynamics between the lowest three electronic states of acrolein. Due to the low, O(N2) apparent computational complexity of hh-TDA and our GPU-accelerated implementation, this method is promising for the simulation of pre-edge features in TR-NEXAFS spectra of large molecules and molecules in the condensed phase.
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Affiliation(s)
- Edward G Hohenstein
- Department of Chemistry and The PULSE Institute, Stanford University, Stanford, California 94305, United States.,SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States
| | - Jimmy K Yu
- Department of Chemistry and The PULSE Institute, Stanford University, Stanford, California 94305, United States.,SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States.,Biophysics Program, Stanford University, Stanford, California 94305, United States
| | - Christoph Bannwarth
- Department of Chemistry and The PULSE Institute, Stanford University, Stanford, California 94305, United States.,SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States
| | - Nanna Holmgaard List
- Department of Chemistry and The PULSE Institute, Stanford University, Stanford, California 94305, United States.,SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States
| | - Alexander C Paul
- Department of Chemistry, Norwegian University of Science and Technology, NTNU, 7491 Trondheim, Norway
| | - Sarai D Folkestad
- Department of Chemistry, Norwegian University of Science and Technology, NTNU, 7491 Trondheim, Norway
| | - Henrik Koch
- Department of Chemistry, Norwegian University of Science and Technology, NTNU, 7491 Trondheim, Norway.,Scuola Normale Superiore, Piazza dei Cavaleri 7, 56126 Pisa, Italy
| | - Todd J Martínez
- Department of Chemistry and The PULSE Institute, Stanford University, Stanford, California 94305, United States.,SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States
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19
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Shaikh M, Liu X, Amini K, Steinle T, Biegert J. High density molecular jets of complex neutral organic molecules with Tesla valves. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2021; 92:104103. [PMID: 34717433 DOI: 10.1063/5.0060904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 09/28/2021] [Indexed: 06/13/2023]
Abstract
Supersonic jets of gas-phase atoms and small molecules have enabled a variety of ultrafast and ultracold chemical studies. However, extension to larger, more complex neutral molecules proves challenging for two reasons: (i) Complex molecules, such as cis-stilbene, exist in a liquid or solid phase at room temperature and ambient pressure and (ii) a unidirectional flow of high-density gaseous beams of such molecules to the interaction region is required. No delivery system currently exists that can deliver dense enough molecular jets of neutral complex molecules without ionizing or exciting the target for use in gas-phase structural dynamics studies. Here, we present a novel delivery system utilizing Tesla valves, which generates more than an order-of-magnitude denser gaseous beam of molecules compared to a bubbler without Tesla valves at the interaction region by ensuring a fast unidirectional flow of the gaseous sample. We present combined experimental and flow simulations of the Tesla valve setup. Our results open new possibilities of studying large complex neutral molecules in the gas-phase with low vapor pressures in future ultrafast and ultracold studies.
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Affiliation(s)
- Moniruzzaman Shaikh
- ICFO - Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
| | - Xinyao Liu
- ICFO - Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
| | - Kasra Amini
- ICFO - Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
| | - Tobias Steinle
- ICFO - Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
| | - Jens Biegert
- ICFO - Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
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20
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Pihlava L, Niskanen J, Kooser K, Stråhlman C, Maclot S, Kivimäki A, Kukk E. Photodissociation dynamics of halogenated aromatic molecules: the case of core-ionized tetrabromothiophene. Phys Chem Chem Phys 2021; 23:21249-21261. [PMID: 34542547 DOI: 10.1039/d1cp03097c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
We studied the gas-phase photodissociation of a fully halogenated aromatic molecule, tetrabromothiophene, upon core-shell ionization by using synchrotron radiation and energy-resolved multiparticle coincidence spectroscopy. Photodynamics was initiated by the selective soft X-ray ionization of three elements - C, S, and Br - leading to the formation of dicationic states by Auger decay. From a detailed study of photodissociation upon Br 3d ionization, we formulate a general fragmentation scheme, where dissociation into neutral fragments and a pair of cations prevails, but dicationic species are also produced. We conclude that dicationic tetrabromothiophene typically undergoes deferred charge separation (with one of the ions being often Br+) that may be followed by secondary dissociation steps, depending on the available internal energy of the parent dication. Observations suggest that the ejection of neutral bromine atoms as the first step of deferred charge separation is a prevailing feature in dicationic dissociation, although sometimes in this step the C-Br bonds appear to remain intact and the thiophene ring is broken instead. Ionization-site-specific effects are observed particularly in doubly charged fragments and as large differences in the yields of the intact parent dication. We interpret these effects, using first-principles calculations and molecular dynamics simulations of core-hole states, as likely caused by the geometry changes during the core-hole lifetime.
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Affiliation(s)
- Lassi Pihlava
- Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland.
| | - Johannes Niskanen
- Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland.
| | - Kuno Kooser
- Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland. .,Institute of Physics, University of Tartu, W. Ostwaldi 1, EE-50411 Tartu, Estonia
| | - Christian Stråhlman
- Department of Materials Science and Applied Mathematics, Malmö University, SE-20506 Malmö, Sweden
| | - Sylvain Maclot
- Department of Physics, Gothenburg University, Box 100, SE-40530 Gothenburg, Sweden
| | - Antti Kivimäki
- MAX IV Laboratory, Lund University, SE-22100 Lund, Sweden.,Nano and Molecular Systems Research Unit, University of Oulu, FI-90570 Oulu, Finland
| | - Edwin Kukk
- Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland.
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21
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Li X, Inhester L, Robatjazi SJ, Erk B, Boll R, Hanasaki K, Toyota K, Hao Y, Bomme C, Rudek B, Foucar L, Southworth SH, Lehmann CS, Kraessig B, Marchenko T, Simon M, Ueda K, Ferguson KR, Bucher M, Gorkhover T, Carron S, Alonso-Mori R, Koglin JE, Correa J, Williams GJ, Boutet S, Young L, Bostedt C, Son SK, Santra R, Rolles D, Rudenko A. Pulse Energy and Pulse Duration Effects in the Ionization and Fragmentation of Iodomethane by Ultraintense Hard X Rays. PHYSICAL REVIEW LETTERS 2021; 127:093202. [PMID: 34506178 DOI: 10.1103/physrevlett.127.093202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 01/24/2021] [Accepted: 07/02/2021] [Indexed: 06/13/2023]
Abstract
The interaction of intense femtosecond x-ray pulses with molecules sensitively depends on the interplay between multiple photoabsorptions, Auger decay, charge rearrangement, and nuclear motion. Here, we report on a combined experimental and theoretical study of the ionization and fragmentation of iodomethane (CH_{3}I) by ultraintense (∼10^{19} W/cm^{2}) x-ray pulses at 8.3 keV, demonstrating how these dynamics depend on the x-ray pulse energy and duration. We show that the timing of multiple ionization steps leading to a particular reaction product and, thus, the product's final kinetic energy, is determined by the pulse duration rather than the pulse energy or intensity. While the overall degree of ionization is mainly defined by the pulse energy, our measurement reveals that the yield of the fragments with the highest charge states is enhanced for short pulse durations, in contrast to earlier observations for atoms and small molecules in the soft x-ray domain. We attribute this effect to a decreased charge transfer efficiency at larger internuclear separations, which are reached during longer pulses.
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Affiliation(s)
- X Li
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas, USA
| | - L Inhester
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
| | - S J Robatjazi
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas, USA
| | - B Erk
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - R Boll
- Max Planck Institute for Nuclear Physics, Heidelberg, Germany
- European XFEL, Schenefeld, Germany
| | - K Hanasaki
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
| | - K Toyota
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
| | - Y Hao
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
- Institute of Theoretical Physics and Department of Physics, University of Science and Technology Beijing, Beijing, People's Republic of China
| | - C Bomme
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - B Rudek
- Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany
| | - L Foucar
- Max Planck Institute for Medical Research, Heidelberg, Germany
| | - S H Southworth
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois, USA
| | - C S Lehmann
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois, USA
- Fachbereich Chemie, Philipps-Universität Marburg, Marburg, Germany
| | - B Kraessig
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois, USA
| | - T Marchenko
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, Paris, France
| | - M Simon
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, LCPMR, Paris, France
| | - K Ueda
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan
| | - K R Ferguson
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California, USA
| | - M Bucher
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois, USA
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California, USA
| | - T Gorkhover
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California, USA
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Berlin, Germany
| | - S Carron
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California, USA
| | - R Alonso-Mori
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California, USA
| | - J E Koglin
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California, USA
| | - J Correa
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - G J Williams
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California, USA
- NSLS-II, Brookhaven National Laboratory, Upton New York, USA
| | - S Boutet
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California, USA
| | - L Young
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois, USA
- Department of Physics and James Franck Institute, The University of Chicago, Chicago, Illinois, USA
| | - C Bostedt
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois, USA
- Paul Scherrer Institut, Villigen-PSI, Villigen, Switzerland
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - S-K Son
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
| | - R Santra
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
- Department of Physics, Universität Hamburg, Hamburg, Germany
| | - D Rolles
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas, USA
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - A Rudenko
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas, USA
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22
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Ilchen M, Schmidt P, Novikovskiy NM, Hartmann G, Rupprecht P, Coffee RN, Ehresmann A, Galler A, Hartmann N, Helml W, Huang Z, Inhester L, Lutman AA, MacArthur JP, Maxwell T, Meyer M, Music V, Nuhn HD, Osipov T, Ray D, Wolf TJA, Bari S, Walter P, Li Z, Moeller S, Knie A, Demekhin PV. Site-specific interrogation of an ionic chiral fragment during photolysis using an X-ray free-electron laser. Commun Chem 2021; 4:119. [PMID: 36697819 PMCID: PMC9814667 DOI: 10.1038/s42004-021-00555-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 07/20/2021] [Indexed: 01/28/2023] Open
Abstract
Short-wavelength free-electron lasers with their ultrashort pulses at high intensities have originated new approaches for tracking molecular dynamics from the vista of specific sites. X-ray pump X-ray probe schemes even allow to address individual atomic constituents with a 'trigger'-event that preludes the subsequent molecular dynamics while being able to selectively probe the evolving structure with a time-delayed second X-ray pulse. Here, we use a linearly polarized X-ray photon to trigger the photolysis of a prototypical chiral molecule, namely trifluoromethyloxirane (C3H3F3O), at the fluorine K-edge at around 700 eV. The created fluorine-containing fragments are then probed by a second, circularly polarized X-ray pulse of higher photon energy in order to investigate the chemically shifted inner-shell electrons of the ionic mother-fragment for their stereochemical sensitivity. We experimentally demonstrate and theoretically support how two-color X-ray pump X-ray probe experiments with polarization control enable XFELs as tools for chiral recognition.
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Affiliation(s)
- Markus Ilchen
- grid.5155.40000 0001 1089 1036Institut für Physik und CINSaT, Universität Kassel, Kassel, Germany ,grid.434729.f0000 0004 0590 2900European XFEL GmbH, Schenefeld, Germany ,Stanford PULSE Institute, Menlo Park, CA USA
| | - Philipp Schmidt
- grid.5155.40000 0001 1089 1036Institut für Physik und CINSaT, Universität Kassel, Kassel, Germany ,grid.434729.f0000 0004 0590 2900European XFEL GmbH, Schenefeld, Germany
| | - Nikolay M. Novikovskiy
- grid.5155.40000 0001 1089 1036Institut für Physik und CINSaT, Universität Kassel, Kassel, Germany ,grid.182798.d0000 0001 2172 8170Institute of Physics, Southern Federal University, Rostov-on-Don, Russia
| | - Gregor Hartmann
- grid.5155.40000 0001 1089 1036Institut für Physik und CINSaT, Universität Kassel, Kassel, Germany ,grid.424048.e0000 0001 1090 3682Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin, Germany
| | - Patrick Rupprecht
- grid.419604.e0000 0001 2288 6103Max-Planck-Institut für Kernphysik Heidelberg, Heidelberg, Germany
| | - Ryan N. Coffee
- grid.445003.60000 0001 0725 7771SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - Arno Ehresmann
- grid.5155.40000 0001 1089 1036Institut für Physik und CINSaT, Universität Kassel, Kassel, Germany
| | - Andreas Galler
- grid.434729.f0000 0004 0590 2900European XFEL GmbH, Schenefeld, Germany
| | - Nick Hartmann
- grid.445003.60000 0001 0725 7771SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - Wolfram Helml
- grid.5675.10000 0001 0416 9637Fakultät für Physik, Technische Universität Dortmund, Dortmund, Germany
| | - Zhirong Huang
- grid.445003.60000 0001 0725 7771SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - Ludger Inhester
- grid.7683.a0000 0004 0492 0453Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany
| | - Alberto A. Lutman
- grid.445003.60000 0001 0725 7771SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - James P. MacArthur
- grid.445003.60000 0001 0725 7771SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - Timothy Maxwell
- grid.445003.60000 0001 0725 7771SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - Michael Meyer
- grid.434729.f0000 0004 0590 2900European XFEL GmbH, Schenefeld, Germany
| | - Valerija Music
- grid.5155.40000 0001 1089 1036Institut für Physik und CINSaT, Universität Kassel, Kassel, Germany ,grid.434729.f0000 0004 0590 2900European XFEL GmbH, Schenefeld, Germany
| | - Heinz-Dieter Nuhn
- grid.445003.60000 0001 0725 7771SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - Timur Osipov
- grid.445003.60000 0001 0725 7771SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - Dipanwita Ray
- grid.445003.60000 0001 0725 7771SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - Thomas J. A. Wolf
- Stanford PULSE Institute, Menlo Park, CA USA ,grid.445003.60000 0001 0725 7771SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - Sadia Bari
- grid.7683.a0000 0004 0492 0453Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany
| | - Peter Walter
- grid.445003.60000 0001 0725 7771SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - Zheng Li
- grid.7683.a0000 0004 0492 0453Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany ,grid.11135.370000 0001 2256 9319State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, China
| | - Stefan Moeller
- grid.445003.60000 0001 0725 7771SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - André Knie
- grid.5155.40000 0001 1089 1036Institut für Physik und CINSaT, Universität Kassel, Kassel, Germany
| | - Philipp V. Demekhin
- grid.5155.40000 0001 1089 1036Institut für Physik und CINSaT, Universität Kassel, Kassel, Germany
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23
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Wang E, Ren X, Dorn A. Role of the Environment in Quenching the Production of H_{3}^{+} from Dicationic Clusters of Methanol. PHYSICAL REVIEW LETTERS 2021; 126:103402. [PMID: 33784146 DOI: 10.1103/physrevlett.126.103402] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 01/08/2021] [Accepted: 02/09/2021] [Indexed: 06/12/2023]
Abstract
Ionization and subsequent isomerization of organic molecules has been suggested as an important source of trihydrogen H_{3}^{+} cations in outer space. The high interest in such reactions has initiated many experimental and theoretical studies for various molecules. Here, we report measurements as well as ab initio molecular dynamics simulations on the fragmentation of dicationic methanol monomers and clusters ionized by low-energy (90 eV) electrons. Experimentally, for dicationic monomers, a fragmentation channel for the formation of H_{3}^{+} in coincidence with a COH^{+} cation is observed. The simulations show that an intermediate neutral H_{2} is formed in the first step, and its roaming around the dication ends in the formation of H_{3}^{+}. The entire reaction takes about 100-500 fs. The calculated kinetic energy release for the H_{3}^{+}+COH^{+} ion pair is in excellent agreement with the experimental result. In contrast, for the dicationic clusters, due to the possibility of distributing the two charges onto different molecules, several fast dissociation channels occur and suppress the roaming of H_{2} and formation of H_{3}^{+}. The present Letter suggests that the quenching of H_{3}^{+} formation by the chemical environment is a general phenomenon in dicationic clusters of organic molecules.
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Affiliation(s)
- Enliang Wang
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Xueguang Ren
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
- School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
| | - Alexander Dorn
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
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24
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Allum F, Anders N, Brouard M, Bucksbaum P, Burt M, Downes-Ward B, Grundmann S, Harries J, Ishimura Y, Iwayama H, Kaiser L, Kukk E, Lee J, Liu X, Minns RS, Nagaya K, Niozu A, Niskanen J, O'Neal J, Owada S, Pickering J, Rolles D, Rudenko A, Saito S, Ueda K, Vallance C, Werby N, Woodhouse J, You D, Ziaee F, Driver T, Forbes R. Multi-channel photodissociation and XUV-induced charge transfer dynamics in strong-field-ionized methyl iodide studied with time-resolved recoil-frame covariance imaging. Faraday Discuss 2021; 228:571-596. [PMID: 33629700 DOI: 10.1039/d0fd00115e] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photodissociation dynamics of strong-field ionized methyl iodide (CH3I) were probed using intense extreme ultraviolet (XUV) radiation produced by the SPring-8 Angstrom Compact free electron LAser (SACLA). Strong-field ionization and subsequent fragmentation of CH3I was initiated by an intense femtosecond infrared (IR) pulse. The ensuing fragmentation and charge transfer processes following multiple ionization by the XUV pulse at a range of pump-probe delays were followed in a multi-mass ion velocity-map imaging (VMI) experiment. Simultaneous imaging of a wide range of resultant ions allowed for additional insight into the complex dynamics by elucidating correlations between the momenta of different fragment ions using time-resolved recoil-frame covariance imaging analysis. The comprehensive picture of the photodynamics that can be extracted provides promising evidence that the techniques described here could be applied to study ultrafast photochemistry in a range of molecular systems at high count rates using state-of-the-art advanced light sources.
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Affiliation(s)
- Felix Allum
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Nils Anders
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main, Germany
| | - Mark Brouard
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Philip Bucksbaum
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
| | - Michael Burt
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Briony Downes-Ward
- Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK
| | - Sven Grundmann
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main, Germany
| | - James Harries
- QST, SPring-8, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan
| | - Yudai Ishimura
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, 980-8577, Japan
| | - Hiroshi Iwayama
- UVSOR Synchrotron Facility, Institute for Molecular Science, Okazaki 444-8585, Japan
| | - Leon Kaiser
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main, Germany
| | - Edwin Kukk
- Department of Physics and Astronomy, University of Turku, Turku, FI-20014, Finland
| | - Jason Lee
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany
| | - Xiaojing Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Russell S Minns
- Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK
| | - Kiyonobu Nagaya
- Department of Physics, Kyoto University, Kyoto, 606-8502, Japan
| | - Akinobu Niozu
- Department of Physics, Kyoto University, Kyoto, 606-8502, Japan
| | - Johannes Niskanen
- Department of Physics and Astronomy, University of Turku, Turku, FI-20014, Finland
| | - Jordan O'Neal
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
| | | | - James Pickering
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Daniel Rolles
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS 66506, USA
| | - Artem Rudenko
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS 66506, USA
| | - Shu Saito
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, 980-8577, Japan
| | - Kiyoshi Ueda
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, 980-8577, Japan
| | - Claire Vallance
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Nicholas Werby
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
| | - Joanne Woodhouse
- Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK
| | - Daehyun You
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, 980-8577, Japan
| | - Farzaneh Ziaee
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS 66506, USA
| | - Taran Driver
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
| | - Ruaridh Forbes
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
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25
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Demonstration of Transmission Mode Soft X-ray NEXAFS Using Third- and Fifth-Order Harmonics of FEL Radiation at SACLA BL1. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10217852] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We demonstrate the applicability of third- and fifth-order harmonics of free-electron laser (FEL) radiation for soft X-ray absorption spectroscopy in the transmission mode at SACLA BL1, which covers a photon energy range of 20 to 150 eV in the fundamental FEL radiation. By using the third- and fifth-order harmonics of the FEL radiation, we successfully recorded near-edge X-ray absorption fine structure (NEXAFS) spectra for Ar 2p core ionization and CO2 C 1s and O 1s core ionizations. Our results show that the utilization of third- and fifth-order harmonics can significantly extend the available photon energies for NEXAFS spectroscopy using an FEL and opens the door to femtosecond pump-probe NEXAFS using a soft X-ray FEL.
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26
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27
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Opportunities for Two-Color Experiments in the Soft X-ray Regime at the European XFEL. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10082728] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
X-ray pump/X-ray probe applications are made possible at X-ray Free Electron Laser (XFEL) facilities by generating two X-ray pulses with different wavelengths and controllable temporal delay. In order to enable this capability at the European XFEL, an upgrade project to equip the soft X-ray SASE3 beamline with a magnetic chicane is underway. In the present paper we describe the status of the project, its scientific focus and expected performance, including start-to-end simulations of the photon beam transport up to the sample, as well as recent experimental results demonstrating two-color lasing at photon energies of 805 eV + 835 eV and 910 eV + 950 eV. Additionally, we discuss methods to analyze the spectral properties and the intensity of the generated radiation to provide on-line diagnostics for future user experiments.
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28
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Murari M, Lucarelli GD, Lucchini M, Nisoli M. Robustness of the ePIE algorithm for the complete characterization of femtosecond, extreme ultra-violet pulses. OPTICS EXPRESS 2020; 28:10210-10224. [PMID: 32225611 DOI: 10.1364/oe.388907] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 03/03/2020] [Indexed: 06/10/2023]
Abstract
Frequency-resolved optical gating for the complete reconstruction of attosecond bursts (FROG-CRAB) is a well-known technique for the complete temporal characterization of ultrashort extreme ultraviolet (XUV) pulses, with durations down to a few tens of attoseconds. Recently, this technique was extended to few-femtosecond XUV pulses, produced by high-order harmonic generation (HHG) in gases, thanks to the implementation of a robust iterative algorithm: the extended ptychographic iterative engine (ePIE). We demonstrate, by using numerical simulations, that the ptychographic reconstruction technique is characterized by an excellent degree of convergence and robustness. We analyse the effects on pulse reconstruction of various experimental imperfections, namely, the jitter of the relative temporal delay between the XUV pulse and a suitably delayed infrared (IR) pulse and the noise of the measured FROG-CRAB spectrograms. We also show that the ePIE approach is particularly suitable for the reconstruction of incomplete FROG-CRAB spectrograms (i.e., spectrograms with a reduced number of measured time delays) and of spectrograms acquired with a reduced spectral resolution, particularly when relatively high-intensity IR pulses are employed.
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29
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Smith AD, Balčiu̅nas T, Chang YP, Schmidt C, Zinchenko K, Nunes FB, Rossi E, Svoboda V, Yin Z, Wolf JP, Wörner HJ. Femtosecond Soft-X-ray Absorption Spectroscopy of Liquids with a Water-Window High-Harmonic Source. J Phys Chem Lett 2020; 11:1981-1988. [PMID: 32073862 PMCID: PMC7086398 DOI: 10.1021/acs.jpclett.9b03559] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Femtosecond X-ray absorption spectroscopy (XAS) is a powerful method to investigate the dynamical behavior of a system after photoabsorption in real time. So far, the application of this technique has remained limited to large-scale facilities, such as femtosliced synchrotrons and free-electron lasers (FEL). In this work, we demonstrate femtosecond time-resolved soft-X-ray absorption spectroscopy of liquid samples by combining a sub-micrometer-thin flat liquid jet with a high-harmonic tabletop source covering the entire water-window range (284-538 eV). Our work represents the first extension of tabletop XAS to the oxygen edge of a chemical sample in the liquid phase. In the time domain, our measurements resolve the gradual appearance of absorption features below the carbon K-edge of ethanol and methanol during strong-field ionization and trace the valence-shell ionization dynamics of the liquid alcohols with a temporal resolution of ∼30 fs. This technique opens unique opportunities to study molecular dynamics of chemical systems in the liquid phase with elemental, orbital, and site sensitivity.
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Affiliation(s)
- Adam D. Smith
- Laboratory
of Physical Chemistry, ETH Zürich, 8093 Zürich, Switzerland
| | - Tadas Balčiu̅nas
- GAP-Biophotonics, Université de Genéve, 1205 Geneva, Switzerland
| | - Yi-Ping Chang
- GAP-Biophotonics, Université de Genéve, 1205 Geneva, Switzerland
| | - Cédric Schmidt
- GAP-Biophotonics, Université de Genéve, 1205 Geneva, Switzerland
| | | | - Fernanda B. Nunes
- Laboratory
of Physical Chemistry, ETH Zürich, 8093 Zürich, Switzerland
| | - Emanuele Rossi
- Laboratory
of Physical Chemistry, ETH Zürich, 8093 Zürich, Switzerland
| | - Vít Svoboda
- Laboratory
of Physical Chemistry, ETH Zürich, 8093 Zürich, Switzerland
| | - Zhong Yin
- Laboratory
of Physical Chemistry, ETH Zürich, 8093 Zürich, Switzerland
- E-mail:
| | - Jean-Pierre Wolf
- GAP-Biophotonics, Université de Genéve, 1205 Geneva, Switzerland
| | - Hans Jakob Wörner
- Laboratory
of Physical Chemistry, ETH Zürich, 8093 Zürich, Switzerland
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30
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Schwob L, Dörner S, Atak K, Schubert K, Timm M, Bülow C, Zamudio-Bayer V, von Issendorff B, Lau JT, Techert S, Bari S. Site-Selective Dissociation upon Sulfur L-Edge X-ray Absorption in a Gas-Phase Protonated Peptide. J Phys Chem Lett 2020; 11:1215-1221. [PMID: 31978303 DOI: 10.1021/acs.jpclett.0c00041] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Site-selective dissociation induced by core photoexcitation of biomolecules is of key importance for the understanding of radiation damage processes and dynamics and for its promising use as "chemical scissors" in various applications. However, identifying products of site-selective dissociation in large molecules is challenging at the carbon, nitrogen, and oxygen edges because of the high recurrence of these atoms and related chemical groups. In this paper, we present the observation of site-selective dissociation at the sulfur L-edge in the gas-phase peptide methionine enkephalin, which contains only a single sulfur atom. Near-edge X-ray absorption mass spectrometry has revealed that the resonant S 2p → σ*C-S excitation of the sulfur contained in the methionine side chain leads to site-selective dissociation, which is not the case after core ionization above the sulfur L-edge. The prospects of such results for the study of charge dynamics in biomolecular systems are discussed.
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Affiliation(s)
- Lucas Schwob
- Deutsches Elektronen-Synchrotron DESY , Notkestrasse 85 , 22607 Hamburg , Germany
| | - Simon Dörner
- Deutsches Elektronen-Synchrotron DESY , Notkestrasse 85 , 22607 Hamburg , Germany
| | - Kaan Atak
- Deutsches Elektronen-Synchrotron DESY , Notkestrasse 85 , 22607 Hamburg , Germany
| | - Kaja Schubert
- Deutsches Elektronen-Synchrotron DESY , Notkestrasse 85 , 22607 Hamburg , Germany
| | - Martin Timm
- Abteilung für Hochempfindliche Röntgenspektroskopie , Helmholtz Zentrum Berlin für Materialien und Energie , Albert-Einstein-Strasse 15 , 12489 Berlin , Germany
| | - Christine Bülow
- Abteilung für Hochempfindliche Röntgenspektroskopie , Helmholtz Zentrum Berlin für Materialien und Energie , Albert-Einstein-Strasse 15 , 12489 Berlin , Germany
| | - Vicente Zamudio-Bayer
- Abteilung für Hochempfindliche Röntgenspektroskopie , Helmholtz Zentrum Berlin für Materialien und Energie , Albert-Einstein-Strasse 15 , 12489 Berlin , Germany
| | - Bernd von Issendorff
- Physikalisches Institut , Universität Freiburg , Hermann-Herder-Straße 3 , 79104 Freiburg , Germany
| | - J Tobias Lau
- Abteilung für Hochempfindliche Röntgenspektroskopie , Helmholtz Zentrum Berlin für Materialien und Energie , Albert-Einstein-Strasse 15 , 12489 Berlin , Germany
- Physikalisches Institut , Universität Freiburg , Hermann-Herder-Straße 3 , 79104 Freiburg , Germany
| | - Simone Techert
- Deutsches Elektronen-Synchrotron DESY , Notkestrasse 85 , 22607 Hamburg , Germany
- Institute of X-ray Physics , University of Göttingen , Friedrich-Hund-Platz 1 , 37077 Göttingen , Germany
| | - Sadia Bari
- Deutsches Elektronen-Synchrotron DESY , Notkestrasse 85 , 22607 Hamburg , Germany
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31
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Wallner M, Eland JHD, Squibb RJ, Andersson J, Roos AH, Singh R, Talaee O, Koulentianos D, Piancastelli MN, Simon M, Feifel R. Coulomb explosion of CD 3I induced by single photon deep inner-shell ionisation. Sci Rep 2020; 10:1246. [PMID: 31988321 PMCID: PMC6985119 DOI: 10.1038/s41598-020-58251-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 01/13/2020] [Indexed: 12/05/2022] Open
Abstract
L-shell ionisation and subsequent Coulomb explosion of fully deuterated methyl iodide, CD3I, irradiated with hard X-rays has been examined by a time-of-flight multi-ion coincidence technique. The core vacancies relax efficiently by Auger cascades, leading to charge states up to 16+. The dynamics of the Coulomb explosion process are investigated by calculating the ions’ flight times numerically based on a geometric model of the experimental apparatus, for comparison with the experimental data. A parametric model of the explosion, previously introduced for multi-photon induced Coulomb explosion, is applied in numerical simulations, giving good agreement with the experimental results for medium charge states. Deviations for higher charges suggest the need to include nuclear motion in a putatively more complete model. Detection efficiency corrections from the simulations are used to determine the true distributions of molecular charge states produced by initial L1, L2 and L3 ionisation.
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Affiliation(s)
- M Wallner
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - J H D Eland
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden.,Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
| | - R J Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - J Andersson
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - A Hult Roos
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - R Singh
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - O Talaee
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden.,Nano and Molecular Systems Research Unit, University of Oulu, P.O. Box 3000, FI-90014, Oulu, Finland
| | - D Koulentianos
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden.,Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005, Paris, Cedex 05, France
| | - M N Piancastelli
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005, Paris, Cedex 05, France.,Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden
| | - M Simon
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005, Paris, Cedex 05, France.,Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, F-91192, Gif-sur-Yvette, Cedex, France
| | - R Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden.
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32
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Yachmenev A, Thesing LV, Küpper J. Laser-induced dynamics of molecules with strong nuclear quadrupole coupling. J Chem Phys 2019; 151:244118. [PMID: 31893871 DOI: 10.1063/1.5133837] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present a general variational approach for computing the laser-induced rovibrational dynamics of molecules, taking into account the hyperfine effects of the nuclear quadrupole coupling. The method combines the general variational approach TROVE (Theoretical Ro-Vibrational Energies), which provides accurate rovibrational hyperfine energies and wavefunctions for arbitrary molecules, with the variational method RichMol, designed for generalized simulations of the rovibrational dynamics in the presence of external electric fields. We investigate the effect of the nuclear quadrupole coupling on the short-pulse laser alignment of a prototypical molecule CFClBrI, which contains nuclei with large quadrupole constants. The influence of the nuclear quadrupole interactions on the postpulse molecular dynamics is negligible at early times, for the first several revivals; however, at longer time scales, the effect is entirely detrimental and strongly depends on the laser intensity. This effect can be explained by dephasing in the laser-excited rotational wavepacket due to irregular spacings between the hyperfine-split nuclear spin states across different rotational hyperfine bands.
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Affiliation(s)
- Andrey Yachmenev
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Linda V Thesing
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Jochen Küpper
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
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33
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Schubert K, Guda AA, Mertens K, Schunck JO, Schippers S, Müller A, Bari S, Klumpp S, Martins M. Absorption spectra at the iodine 3d ionisation threshold following the CH xI + (x = 0-3) cation sequence. Phys Chem Chem Phys 2019; 21:25415-25424. [PMID: 31710320 DOI: 10.1039/c9cp04640b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Yields of atomic iodine Iq+ (q≥ 2) fragments resulting from photoexcitation and photoionisation of the target cations CHxI+ (x = 0-3) have been measured in the photon-energy range 610 eV to 670 eV, which comprises the threshold for iodine 3d ionisation. The measured ion-yield spectra show two strong and broad resonance features due to the excitation of the 3d3/2,5/2 electrons into εf states similar to atomic iodine. In the 3d pre-edge range, electrons are excited into molecular orbitals consisting of iodine, carbon, and hydrogen atomic orbitals. These transitions have been identified by comparison with literature data and by simulations using time-dependent density functional theory (TDDFT) with the KMLYP functional. The ion-yield spectrum for CH3I+ resembles the spectrum of IH+ [Klumpp et al., Phys. Rev. A, 2018, 97, 033401] because the highest occupied molecular orbitals (HOMO) of the H and CH3 fragments both contain a single vacancy, only. For the molecular cations with higher number of vacancies in the valence molecular orbitals CHxI+ (x = 0-2), a stronger hybridisation of the molecular orbitals occurs between the organic fragment and the iodine resulting in a change of bonding from a single σ bond in CH3I+ to a triple bond including two π orbitals in CI+. This is reflected in the resonance energies of the observed absorption lines below the iodine 3d excitation threshold.
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Affiliation(s)
- Kaja Schubert
- Department Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany. and Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Alexander A Guda
- The Smart Materials Research Institute, Southern Federal University, Sladkova 178/24, 344090 Rostov-on-Don, Russia
| | - Karolin Mertens
- Department Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
| | - Jan O Schunck
- Department Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany. and Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Stefan Schippers
- Justus-Liebig-Universität Gießen, I. Physikalisches Institut, Heinrich-Buff-Ring 16, 35392 Gießen, Germany
| | - Alfred Müller
- Justus-Liebig-Universität Gießen, Institut für Atom- und Molekülphysik, Leihgesterner Weg 217, 35392 Gießen, Germany
| | - Sadia Bari
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Stephan Klumpp
- Department Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany. and Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Michael Martins
- Department Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
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34
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Multispectroscopic Study of Single Xe Clusters Using XFEL Pulses. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9224932] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
X-ray free-electron lasers (XFELs) deliver ultrashort coherent laser pulses in the X-ray spectral regime, enabling novel investigations into the structure of individual nanoscale samples. In this work, we demonstrate how single-shot small-angle X-ray scattering (SAXS) measurements combined with fluorescence and ion time-of-flight (TOF) spectroscopy can be used to obtain size- and structure-selective evaluation of the light-matter interaction processes on the nanoscale. We recorded the SAXS images of single xenon clusters using XFEL pulses provided by the SPring-8 Angstrom compact free-electron laser (SACLA). The XFEL fluences and the radii of the clusters at the reaction point were evaluated and the ion TOF spectra and fluorescence spectra were sorted accordingly. We found that the XFEL fluence and cluster size extracted from the diffraction patterns showed a clear correlation with the fluorescence and ion TOF spectra. Our results demonstrate the effectiveness of the multispectroscopic approach for exploring laser–matter interaction in the X-ray regime without the influence of the size distribution of samples and the fluence distribution of the incident XFEL pulses.
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35
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Inhester L, Li Z, Zhu X, Medvedev N, Wolf TJA. Spectroscopic Signature of Chemical Bond Dissociation Revealed by Calculated Core-Electron Spectra. J Phys Chem Lett 2019; 10:6536-6544. [PMID: 31589459 DOI: 10.1021/acs.jpclett.9b02370] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The advent of ultrashort soft X-ray pulse sources permits the use of established gas-phase spectroscopy methods to investigate ultrafast photochemistry in isolated molecules with element and site specificity. In the present study, we simulate excited-state wavepacket dynamics of a prototypical process, the ultrafast photodissociation of methyl iodide. Using the simulation, we calculate time-dependent excited-state carbon edge photoelectron and Auger electron spectra. We observe distinct signatures in both types of spectra and show their direct connection to C-I bond dissociation and charge rearrangement processes in the molecule. We demonstrate at the CH3I molecule that the observed signatures allow us to map the time-dependent dynamics of ultrafast photoinduced bond breaking with unprecedented detail.
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Affiliation(s)
- Ludger Inhester
- Center for Free-Electron Laser Science , DESY , Notkestrasse 85 , 22607 Hamburg , Germany
| | - Zheng Li
- School of Physics , Peking University , Beijing 100871 , China
- Max Planck Institute for the Structure and Dynamics of Matter , D-22761 Hamburg , Germany
| | - Xiaolei Zhu
- Stanford PULSE Institute , SLAC National Accelerator Laboratory , 2575 Sand Hill Road , Menlo Park , California 94025 , United States
| | - Nikita Medvedev
- Institute of Physics Czech Academy of Science , Na Slovance 2 , 182 21 Prague 8, Czech Republic
- Institute of Plasma Physics , Czech Academy of Science , Za Slovankou 4 , 182 00 Prague 8, Czech Republic
| | - Thomas J A Wolf
- Stanford PULSE Institute , SLAC National Accelerator Laboratory , 2575 Sand Hill Road , Menlo Park , California 94025 , United States
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36
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Klimešová E, Kulyk O, Gu Y, Dittrich L, Korn G, Hajdu J, Krikunova M, Andreasson J. Plasma channel formation in NIR laser-irradiated carrier gas from an aerosol nanoparticle injector. Sci Rep 2019; 9:8851. [PMID: 31221980 PMCID: PMC6586673 DOI: 10.1038/s41598-019-45120-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 05/22/2019] [Indexed: 11/30/2022] Open
Abstract
Aerosol nanoparticle injectors are fundamentally important for experiments where container-free sample handling is needed to study isolated nanoparticles. The injector consists of a nebuliser, a differential pumping unit, and an aerodynamic lens to create and deliver a focused particle beam to the interaction point inside a vacuum chamber. The tightest focus of the particle beam is close to the injector tip. The density of the focusing carrier gas is high at this point. We show here how this gas interacts with a near infrared laser pulse (800 nm wavelength, 120 fs pulse duration) at intensities approaching 1016 Wcm-2. We observe acceleration of gas ions to kinetic energies of 100s eV and study their energies as a function of the carrier gas density. Our results indicate that field ionisation by the intense near-infrared laser pulse opens up a plasma channel behind the laser pulse. The observations can be understood in terms of a Coulomb explosion of the created underdense plasma channel. The results can be used to estimate gas background in experiments with the injector and they open up opportunities for a new class of studies on electron and ion dynamics in nanoparticles surrounded by a low-density gas.
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Affiliation(s)
- Eva Klimešová
- ELI Beamlines, Institute of Physics AS CR, v.v.i., Na Slovance 2, 182 21, Prague 8, Czech Republic.
| | - Olena Kulyk
- ELI Beamlines, Institute of Physics AS CR, v.v.i., Na Slovance 2, 182 21, Prague 8, Czech Republic
| | - Yanjun Gu
- ELI Beamlines, Institute of Physics AS CR, v.v.i., Na Slovance 2, 182 21, Prague 8, Czech Republic
| | - Laura Dittrich
- ELI Beamlines, Institute of Physics AS CR, v.v.i., Na Slovance 2, 182 21, Prague 8, Czech Republic
- Technische Universität Berlin, Institut für Optik und Atomare Physik, ER 1-1, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Georg Korn
- ELI Beamlines, Institute of Physics AS CR, v.v.i., Na Slovance 2, 182 21, Prague 8, Czech Republic
| | - Janos Hajdu
- ELI Beamlines, Institute of Physics AS CR, v.v.i., Na Slovance 2, 182 21, Prague 8, Czech Republic
- Department of Cell and Molecular Biology, Uppsala University, Husargatan 3 (Box 596), SE-751 24, Uppsala, Sweden
| | - Maria Krikunova
- ELI Beamlines, Institute of Physics AS CR, v.v.i., Na Slovance 2, 182 21, Prague 8, Czech Republic
- Technische Universität Berlin, Institut für Optik und Atomare Physik, ER 1-1, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Jakob Andreasson
- ELI Beamlines, Institute of Physics AS CR, v.v.i., Na Slovance 2, 182 21, Prague 8, Czech Republic
- Chalmers University of Technology, Department of Physics, Göteborg, Sweden
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Real-time observation of X-ray-induced intramolecular and interatomic electronic decay in CH 2I 2. Nat Commun 2019; 10:2186. [PMID: 31097703 PMCID: PMC6522627 DOI: 10.1038/s41467-019-10060-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 04/16/2019] [Indexed: 11/08/2022] Open
Abstract
The increasing availability of X-ray free-electron lasers (XFELs) has catalyzed the development of single-object structural determination and of structural dynamics tracking in real-time. Disentangling the molecular-level reactions triggered by the interaction with an XFEL pulse is a fundamental step towards developing such applications. Here we report real-time observations of XFEL-induced electronic decay via short-lived transient electronic states in the diiodomethane molecule, using a femtosecond near-infrared probe laser. We determine the lifetimes of the transient states populated during the XFEL-induced Auger cascades and find that multiply charged iodine ions are issued from short-lived (∼20 fs) transient states, whereas the singly charged ones originate from significantly longer-lived states (∼100 fs). We identify the mechanisms behind these different time scales: contrary to the short-lived transient states which relax by molecular Auger decay, the long-lived ones decay by an interatomic Coulombic decay between two iodine atoms, during the molecular fragmentation. Understanding strong X-ray induced phenomena is important for applications of X-ray free-electron laser imaging. Here, the authors show time-resolved measurements of X-ray free-electron laser induced electronic decay of CH2I2 molecule probed with NIR pulses and identify mechanisms behind different transient states lifetimes.
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Park BW, Seok SI. Intrinsic Instability of Inorganic-Organic Hybrid Halide Perovskite Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1805337. [PMID: 30773706 DOI: 10.1002/adma.201805337] [Citation(s) in RCA: 108] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 09/29/2018] [Indexed: 05/21/2023]
Abstract
Hybrid lead halide perovskite materials are used in solar cells and show efficiencies greater than 23%. Furthermore, they are applied in light-emitting diodes, X-ray detectors, thin-film transistors, thermoelectrics, and memory devices. Lead trihalide hybrid materials contain methylammonium (MA) or formamidinium (FA) (or a mixture), or long alkylammonium halides, as alternative organic cations. However, the intrinsic stability of hybrid lead halide perovskites is not very high, and they are chemically unstable when exposed to moisture, light, or heat because of their organic contents and low formation energies. Therefore, although improvements in the chemical stability are crucial, changing the material composition is challenging because it is directly related to the desired application requirements. Fortunately, hybrid lead halide perovskites have a very high tolerance toward changes in physical properties arising from doping or addition of different cations and anions, in many cases showing improved properties. Here, the intrinsic instability of hybrid lead halide perovskites is reviewed in relation to the crystal phase and chemical stability. It is suggested that FA should be used for lead halide perovskites for chemical stability instead of MA. Furthermore, additives that stabilize the crystal phase with α-FAPbI3 should eschew MA.
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Affiliation(s)
- Byung-Wook Park
- Department of Energy Engineering, Perovtronics Research Center, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan, 44919, Republic of Korea
| | - Sang Il Seok
- Department of Energy Engineering, Perovtronics Research Center, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan, 44919, Republic of Korea
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39
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Li Y, Xu S, Guo D, Jia S, Jiang X, Zhu X, Ma X. Two-body dissociation of C 3H 4 isomers investigated by 50 keV/u Ne 8+ impact. J Chem Phys 2019; 150:144311. [PMID: 30981265 DOI: 10.1063/1.5097413] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The fragmentation of two isomers of C3H4, propyne (CH3CCH) and allene (CH2CCH2), is investigated by 50 keV/u Ne8+ impact. Obvious isomer effects are observed by comparing the time-of-flight spectra generated from the two isomers. Six two-body fragmentation channels of C3H4 2+ dications are identified for each isomer. CH2 + + C2H2 + is found to be the most favored CC bond breaking channel for both isomers, indicating that CH3CCH2+ intends to rearrange to the structure containing the CH2 group before fragmentation. For CH bond breaking channels, it is found that the CH3CCH which contains a CH3 group is more efficient for H2 + and H3 + ejection. In addition, two-body dissociation channels of C3H4 3+ trications are identified. While the H+ + C3H3 2+ channel is observed in the fragmentation of both isomers, the H2 + + C3H2 2+ channel only occurs in the fragmentation of CH3CCH3+. For CH2CCH2 3+, the peak and shoulder structures in the kinetic energy release spectrum of the H+ + C3H3 2+ channel are attributed to different geometries of the C3H3 2+ product.
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Affiliation(s)
- Yutian Li
- School of Science, Xi'an Jiaotong University, Xi'an 710049, China
| | - Shenyue Xu
- School of Science, Xi'an Jiaotong University, Xi'an 710049, China
| | - Dalong Guo
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Shaokui Jia
- School of Science, Xi'an Jiaotong University, Xi'an 710049, China
| | - Xiaojuan Jiang
- School of Science, Xi'an Jiaotong University, Xi'an 710049, China
| | - Xiaolong Zhu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Xinwen Ma
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
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40
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Luzon I, Livshits E, Gope K, Baer R, Strasser D. Making Sense of Coulomb Explosion Imaging. J Phys Chem Lett 2019; 10:1361-1367. [PMID: 30840457 DOI: 10.1021/acs.jpclett.9b00576] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A multifaceted agreement between ab initio theoretical predictions and experimental measurements, including branching ratios, channel-specific kinetic energy release, and three-body momentum correlation spectra, leads to the identification of new mechanisms in Coulomb-explosion (CE) induced two- and three-body breakup processes in methanol. These identified mechanisms include direct nonadiabatic Coulomb explosion responsible for CO bond-breaking, a long-range " inverse harpooning" dominating the production of H2+ + HCOH+, a transient proton migration leading to surprising energy partitioning in three-body fragmentation and other complex dynamics forming products such as H2O+ and H3+. These mechanisms provide general concepts that should be useful for analyzing future time-resolved Coulomb explosion imaging of methanol as well as other molecular systems. These advances are enabled by a combination of recently developed experimental and computational techniques, using weak ultrafast EUV pulses to initiate the CE and a high-level quantum chemistry approach to follow the resulting field-free nonadiabatic molecular dynamics.
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Affiliation(s)
- Itamar Luzon
- Institute of Chemistry , The Hebrew University of Jerusalem , Jerusalem 91904 , Israel
| | - Ester Livshits
- Fritz Haber Center for Molecular Dynamics and the Institute of Chemistry , The Hebrew University of Jerusalem , Jerusalem 91904 , Israel
| | - Krishnendu Gope
- Institute of Chemistry , The Hebrew University of Jerusalem , Jerusalem 91904 , Israel
| | - Roi Baer
- Fritz Haber Center for Molecular Dynamics and the Institute of Chemistry , The Hebrew University of Jerusalem , Jerusalem 91904 , Israel
| | - Daniel Strasser
- Institute of Chemistry , The Hebrew University of Jerusalem , Jerusalem 91904 , Israel
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41
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Abstract
A proposal for building a Free Electron Laser, EuPRAXIA@SPARC_LAB, at the Laboratori Nazionali di Frascati, is at present under consideration. This FEL facility will provide a unique combination of a high brightness GeV-range electron beam generated in a X-band RF linac, a 0.5 PW-class laser system and the first FEL source driven by a plasma accelerator. The FEL will produce ultra-bright pulses, with up to 10 12 photons/pulse, femtosecond timescale and wavelength down to 3 nm, which lies in the so called “water window”. The experimental activity will be focused on the realization of a plasma driven short wavelength FEL able to provide high-quality photons for a user beamline. In this paper, we describe the main classes of experiments that will be performed at the facility, including coherent diffraction imaging, soft X-ray absorption spectroscopy, Raman spectroscopy, Resonant Inelastic X-ray Scattering and photofragmentation measurements. These techniques will allow studying a variety of samples, both biological and inorganic, providing information about their structure and dynamical behavior. In this context, the possibility of inducing changes in samples via pump pulses leading to the stimulation of chemical reactions or the generation of coherent excitations would tremendously benefit from pulses in the soft X-ray region. High power synchronized optical lasers and a TeraHertz radiation source will indeed be made available for THz and pump–probe experiments and a split-and-delay station will allow performing XUV-XUV pump–probe experiments.
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42
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Nass K. Radiation damage in protein crystallography at X-ray free-electron lasers. Acta Crystallogr D Struct Biol 2019; 75:211-218. [PMID: 30821709 PMCID: PMC6400258 DOI: 10.1107/s2059798319000317] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Accepted: 01/07/2019] [Indexed: 01/17/2023] Open
Abstract
Radiation damage is still the most limiting factor in obtaining high-resolution structures of macromolecules in crystallographic experiments at synchrotrons. With the advent of X-ray free-electron lasers (XFELs) that produce ultrashort and highly intense X-ray pulses, it became possible to outrun most of the radiation-damage processes occurring in the sample during exposure to XFEL radiation. Although this is generally the case, several experimental and theoretical studies have indicated that structures from XFELs may not always be radiation-damage free. This is especially true when higher intensity pulses are used and protein molecules that contain heavy elements in their structures are studied. Here, the radiation-damage mechanisms that occur in samples exposed to XFEL pulses are summarized, results that show indications of radiation damage are reviewed and methods that can partially overcome it are discussed.
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Affiliation(s)
- Karol Nass
- Swiss Light Source, Paul Scherrer Institut, Forschungsstrasse 111, 5232 Villigen, Switzerland
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43
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Liu J, Matthews D, Coriani S, Cheng L. Benchmark Calculations of K-Edge Ionization Energies for First-Row Elements Using Scalar-Relativistic Core–Valence-Separated Equation-of-Motion Coupled-Cluster Methods. J Chem Theory Comput 2019; 15:1642-1651. [DOI: 10.1021/acs.jctc.8b01160] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Junzi Liu
- Department of Chemistry, The Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Devin Matthews
- Department of Chemistry, Southern Methodist University, Dallas, Texas 75275, United States
| | - Sonia Coriani
- Department of Chemistry, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
| | - Lan Cheng
- Department of Chemistry, The Johns Hopkins University, Baltimore, Maryland 21218, United States
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44
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Malakar Y, Pearson WL, Zohrabi M, Kaderiya B, P. KR, Ziaee F, Xue S, Le AT, Ben-Itzhak I, Rolles D, Rudenko A. Time-resolved imaging of bound and dissociating nuclear wave packets in strong-field ionized iodomethane. Phys Chem Chem Phys 2019; 21:14090-14102. [DOI: 10.1039/c8cp07032f] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the results of a time-resolved coincident ion momentum imaging experiment probing nuclear wave packet dynamics in the strong-field ionization and dissociation of iodomethane (CH3I).
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45
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Allum F, Burt M, Amini K, Boll R, Köckert H, Olshin PK, Bari S, Bomme C, Brauße F, Cunha de Miranda B, Düsterer S, Erk B, Géléoc M, Geneaux R, Gentleman AS, Goldsztejn G, Guillemin R, Holland DMP, Ismail I, Johnsson P, Journel L, Küpper J, Lahl J, Lee JWL, Maclot S, Mackenzie SR, Manschwetus B, Mereshchenko AS, Mason R, Palaudoux J, Piancastelli MN, Penent F, Rompotis D, Rouzée A, Ruchon T, Rudenko A, Savelyev E, Simon M, Schirmel N, Stapelfeldt H, Techert S, Travnikova O, Trippel S, Underwood JG, Vallance C, Wiese J, Ziaee F, Brouard M, Marchenko T, Rolles D. Coulomb explosion imaging of CH3I and CH2ClI photodissociation dynamics. J Chem Phys 2018; 149:204313. [DOI: 10.1063/1.5041381] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Felix Allum
- The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
| | - Michael Burt
- The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
| | - Kasra Amini
- The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
| | - Rebecca Boll
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Hansjochen Köckert
- The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
| | - Pavel K. Olshin
- Saint-Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
| | - Sadia Bari
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Cédric Bomme
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Felix Brauße
- Max-Born-Institut, Max-Born-Straße 2A, 12489 Berlin, Germany
| | - Barbara Cunha de Miranda
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique—Matière et Rayonnement, LCPMR, F-75005 Paris, France
| | - Stefan Düsterer
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Benjamin Erk
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Marie Géléoc
- LIDYL, CEA, CNRS, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette, France
| | - Romain Geneaux
- LIDYL, CEA, CNRS, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette, France
| | - Alexander S. Gentleman
- The Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3QZ, United Kingdom
| | | | - Renaud Guillemin
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique—Matière et Rayonnement, LCPMR, F-75005 Paris, France
| | - David M. P. Holland
- Daresbury Laboratory, Daresbury, Warrington, Cheshire WA4 4AD, United Kingdom
| | - Iyas Ismail
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique—Matière et Rayonnement, LCPMR, F-75005 Paris, France
| | - Per Johnsson
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - Loïc Journel
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique—Matière et Rayonnement, LCPMR, F-75005 Paris, France
| | - Jochen Küpper
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Center for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
- Department of Physics, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
- Department of Chemistry, Universität Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
| | - Jan Lahl
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - Jason W. L. Lee
- The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
| | - Sylvain Maclot
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - Stuart R. Mackenzie
- The Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3QZ, United Kingdom
| | - Bastian Manschwetus
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Andrey S. Mereshchenko
- Saint-Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
| | - Robert Mason
- The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
| | - Jérôme Palaudoux
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique—Matière et Rayonnement, LCPMR, F-75005 Paris, France
| | - Maria Novella Piancastelli
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique—Matière et Rayonnement, LCPMR, F-75005 Paris, France
- Department of Physics and Astronomy, Uppsala University, P.O. Box 516, 75120 Uppsala, Sweden
| | - Francis Penent
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique—Matière et Rayonnement, LCPMR, F-75005 Paris, France
| | - Dimitrios Rompotis
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Arnaud Rouzée
- Max-Born-Institut, Max-Born-Straße 2A, 12489 Berlin, Germany
| | - Thierry Ruchon
- LIDYL, CEA, CNRS, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette, France
| | - Artem Rudenko
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - Evgeny Savelyev
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Marc Simon
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique—Matière et Rayonnement, LCPMR, F-75005 Paris, France
| | - Nora Schirmel
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Henrik Stapelfeldt
- Department of Chemistry, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark
| | - Simone Techert
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany
- Institute of X-ray Physics, University of Göttingen, 37077 Göttingen, Germany
| | - Oksana Travnikova
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique—Matière et Rayonnement, LCPMR, F-75005 Paris, France
| | - Sebastian Trippel
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Center for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Jonathan G. Underwood
- Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom
| | - Claire Vallance
- The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
| | - Joss Wiese
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Department of Chemistry, Universität Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
| | - Farzaneh Ziaee
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - Mark Brouard
- The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom
| | - Tatiana Marchenko
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique—Matière et Rayonnement, LCPMR, F-75005 Paris, France
| | - Daniel Rolles
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
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46
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Rolles D, Boll R, Erk B, Rompotis D, Manschwetus B. An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers. J Vis Exp 2018. [PMID: 30417878 PMCID: PMC6235592 DOI: 10.3791/57055] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
This protocol describes key steps in performing and analyzing femtosecond pump-probe experiments that combine a femtosecond optical laser with a free-electron laser. This includes methods to establish the spatial and temporal overlap between the optical and free-electron laser pulses during the experiment, as well as important aspects of the data analysis, such as corrections for arrival time jitter, which are necessary to obtain high-quality pump-probe data sets with the best possible temporal resolution. These methods are demonstrated for an exemplary experiment performed at the FLASH (Free-electron LASer Hamburg) free-electron laser in order to study ultrafast photochemistry in gas-phase molecules by means of velocity map ion imaging. However, most of the strategies are also applicable to similar pump-probe experiments using other targets or other experimental techniques.
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Affiliation(s)
- Daniel Rolles
- J.R. Macdonald Laboratory, Department of Physics, Kansas State University;
| | - Rebecca Boll
- Deutsches Elektronen-Synchrotron DESY; European XFEL GmbH
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47
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Forbes R, De Fanis A, Bomme C, Rolles D, Pratt ST, Powis I, Besley NA, Simon M, Nandi S, Milosavljević AR, Nicolas C, Bozek JD, Underwood JG, Holland DMP. Photoionization of the iodine 3d, 4s, and 4p orbitals in methyl iodide. J Chem Phys 2018; 149:144302. [DOI: 10.1063/1.5035496] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Ruaridh Forbes
- Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
- Department of Physics, University of Ottawa, 150 Louis Pasteur, Ottawa, Ontario K1N 6N5, Canada
| | | | - Cédric Bomme
- Deutsches Elektronen-Synchrotron (DESY), 22607 Hamburg, Germany
| | - Daniel Rolles
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA
| | - Stephen T. Pratt
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Ivan Powis
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Nicholas A. Besley
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Marc Simon
- Sorbonne Université, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France
| | - Saikat Nandi
- Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette, France
| | | | - Christophe Nicolas
- Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette, France
| | - John D. Bozek
- Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette, France
| | - Jonathan G. Underwood
- Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - David M. P. Holland
- Daresbury Laboratory, Daresbury, Warrington, Cheshire WA4 4AD, United Kingdom
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48
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Sauppe M, Rompotis D, Erk B, Bari S, Bischoff T, Boll R, Bomme C, Bostedt C, Dörner S, Düsterer S, Feigl T, Flückiger L, Gorkhover T, Kolatzki K, Langbehn B, Monserud N, Müller E, Müller JP, Passow C, Ramm D, Rolles D, Schubert K, Schwob L, Senfftleben B, Treusch R, Ulmer A, Weigelt H, Zimbalski J, Zimmermann J, Möller T, Rupp D. XUV double-pulses with femtosecond to 650 ps separation from a multilayer-mirror-based split-and-delay unit at FLASH. JOURNAL OF SYNCHROTRON RADIATION 2018; 25:1517-1528. [PMID: 30179193 PMCID: PMC6140391 DOI: 10.1107/s1600577518006094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 04/20/2018] [Indexed: 06/08/2023]
Abstract
Extreme ultraviolet (XUV) and X-ray free-electron lasers enable new scientific opportunities. Their ultra-intense coherent femtosecond pulses give unprecedented access to the structure of undepositable nanoscale objects and to transient states of highly excited matter. In order to probe the ultrafast complex light-induced dynamics on the relevant time scales, the multi-purpose end-station CAMP at the free-electron laser FLASH has been complemented by the novel multilayer-mirror-based split-and-delay unit DESC (DElay Stage for CAMP) for time-resolved experiments. XUV double-pulses with delays adjustable from zero femtoseconds up to 650 picoseconds are generated by reflecting under near-normal incidence, exceeding the time range accessible with existing XUV split-and-delay units. Procedures to establish temporal and spatial overlap of the two pulses in CAMP are presented, with emphasis on the optimization of the spatial overlap at long time-delays via time-dependent features, for example in ion spectra of atomic clusters.
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Affiliation(s)
- Mario Sauppe
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Dimitrios Rompotis
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Benjamin Erk
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Sadia Bari
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Tobias Bischoff
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Rebecca Boll
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Cédric Bomme
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Christoph Bostedt
- Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USA
- Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
| | - Simon Dörner
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Stefan Düsterer
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Torsten Feigl
- optiX fab GmbH, Hans-Knöll-Straße 6, 07745 Jena, Germany
| | - Leonie Flückiger
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
- ARC Centre of Advanced Molecular Imaging, Department of Chemistry and Physics, La Trobe University, Melbourne 3086, Australia
| | - Tais Gorkhover
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
- Stanford PULSE Institute, SLAC National Laboratory, Menlo Park, CA, USA
| | - Katharina Kolatzki
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Bruno Langbehn
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Nils Monserud
- Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max-Born-Straße 2A, 12489 Berlin, Germany
| | - Erland Müller
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Jan P. Müller
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Christopher Passow
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Daniel Ramm
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Daniel Rolles
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS 66506, USA
| | - Kaja Schubert
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Lucas Schwob
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Björn Senfftleben
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Rolf Treusch
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Anatoli Ulmer
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Holger Weigelt
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Jannis Zimbalski
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Julian Zimmermann
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Thomas Möller
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Daniela Rupp
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
- Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max-Born-Straße 2A, 12489 Berlin, Germany
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Erk B, Müller JP, Bomme C, Boll R, Brenner G, Chapman HN, Correa J, Düsterer S, Dziarzhytski S, Eisebitt S, Graafsma H, Grunewald S, Gumprecht L, Hartmann R, Hauser G, Keitel B, von Korff Schmising C, Kuhlmann M, Manschwetus B, Mercadier L, Müller E, Passow C, Plönjes E, Ramm D, Rompotis D, Rudenko A, Rupp D, Sauppe M, Siewert F, Schlosser D, Strüder L, Swiderski A, Techert S, Tiedtke K, Tilp T, Treusch R, Schlichting I, Ullrich J, Moshammer R, Möller T, Rolles D. CAMP@FLASH: an end-station for imaging, electron- and ion-spectroscopy, and pump-probe experiments at the FLASH free-electron laser. JOURNAL OF SYNCHROTRON RADIATION 2018; 25:1529-1540. [PMID: 30179194 PMCID: PMC6140390 DOI: 10.1107/s1600577518008585] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Accepted: 06/11/2018] [Indexed: 06/08/2023]
Abstract
The non-monochromatic beamline BL1 at the FLASH free-electron laser facility at DESY was upgraded with new transport and focusing optics, and a new permanent end-station, CAMP, was installed. This multi-purpose instrument is optimized for electron- and ion-spectroscopy, imaging and pump-probe experiments at free-electron lasers. It can be equipped with various electron- and ion-spectrometers, along with large-area single-photon-counting pnCCD X-ray detectors, thus enabling a wide range of experiments from atomic, molecular, and cluster physics to material and energy science, chemistry and biology. Here, an overview of the layout, the beam transport and focusing capabilities, and the experimental possibilities of this new end-station are presented, as well as results from its commissioning.
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Affiliation(s)
- Benjamin Erk
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | | | - Cédric Bomme
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - Rebecca Boll
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - Günter Brenner
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - Henry N. Chapman
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
- Center for Free-Electron Laser Science (CFEL), DESY, Hamburg, Germany
- Department of Physics, University of Hamburg, Hamburg, Germany
| | - Jonathan Correa
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
- Center for Free-Electron Laser Science (CFEL), DESY, Hamburg, Germany
| | | | | | - Stefan Eisebitt
- Technische Universität Berlin, Berlin, Germany
- Max Born Institute, Berlin, Germany
| | - Heinz Graafsma
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
- Center for Free-Electron Laser Science (CFEL), DESY, Hamburg, Germany
| | | | - Lars Gumprecht
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
- Center for Free-Electron Laser Science (CFEL), DESY, Hamburg, Germany
| | | | - Günter Hauser
- Max-Planck-Institut für Extraterrestrische Physik, Garching, Germany
| | - Barbara Keitel
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | | | | | | | - Laurent Mercadier
- Center for Free-Electron Laser Science (CFEL), DESY, Hamburg, Germany
- Max Planck Institute for Structure and Dynamics of Matter, Hamburg, Germany
| | - Erland Müller
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | | | - Elke Plönjes
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - Daniel Ramm
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | | | - Artem Rudenko
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS, USA
| | - Daniela Rupp
- Technische Universität Berlin, Berlin, Germany
- Max Born Institute, Berlin, Germany
| | | | - Frank Siewert
- Helmholtz Zentrum Berlin für Materialien und Energie, Berlin, Germany
| | | | - Lothar Strüder
- PNSensor GmbH, Munich, Germany
- Universität Siegen, Siegen, Germany
| | | | - Simone Techert
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
- Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
- Institute for X-ray Physics, Göttingen University, Göttingen, Germany
| | - Kai Tiedtke
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - Thomas Tilp
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
- Center for Free-Electron Laser Science (CFEL), DESY, Hamburg, Germany
| | - Rolf Treusch
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - Ilme Schlichting
- Max-Planck-Institut für Medizinische Forschung, Heidelberg, Germany
| | - Joachim Ullrich
- Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | | | - Daniel Rolles
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS, USA
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50
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Leitner T, Josefsson I, Mazza T, Miedema PS, Schröder H, Beye M, Kunnus K, Schreck S, Düsterer S, Föhlisch A, Meyer M, Odelius M, Wernet P. Time-resolved electron spectroscopy for chemical analysis of photodissociation: Photoelectron spectra of Fe(CO)5, Fe(CO)4, and Fe(CO)3. J Chem Phys 2018; 149:044307. [DOI: 10.1063/1.5035149] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- T. Leitner
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
| | - I. Josefsson
- Department of Physics, AlbaNova University Center, Stockholm University, 106 91 Stockholm, Sweden
| | - T. Mazza
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - P. S. Miedema
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
| | - H. Schröder
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
- Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24/25, 14476 Potsdam, Germany
| | - M. Beye
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
| | - K. Kunnus
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
- Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24/25, 14476 Potsdam, Germany
| | - S. Schreck
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
- Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24/25, 14476 Potsdam, Germany
| | - S. Düsterer
- Deutsches Elektronen-Synchrotron DESY, FS-FLASH, Notkestrasse 85, 22607 Hamburg, Germany
| | - A. Föhlisch
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
- Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24/25, 14476 Potsdam, Germany
| | - M. Meyer
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - M. Odelius
- Department of Physics, AlbaNova University Center, Stockholm University, 106 91 Stockholm, Sweden
| | - Ph. Wernet
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
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