1
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Ben Ltaief L, Sishodia K, Mandal S, De S, Krishnan SR, Medina C, Pal N, Richter R, Fennel T, Mudrich M. Efficient Indirect Interatomic Coulombic Decay Induced by Photoelectron Impact Excitation in Large Pure Helium Nanodroplets. PHYSICAL REVIEW LETTERS 2023; 131:023001. [PMID: 37505945 DOI: 10.1103/physrevlett.131.023001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 06/05/2023] [Indexed: 07/30/2023]
Abstract
Ionization of matter by energetic radiation generally causes complex secondary reactions that are hard to decipher. Using large helium nanodroplets irradiated by extreme ultraviolet (XUV) photons, we show that the full chain of processes ensuing primary photoionization can be tracked in detail by means of high-resolution electron spectroscopy. We find that elastic and inelastic scattering of photoelectrons efficiently induces interatomic Coulombic decay (ICD) in the droplets. This type of indirect ICD even becomes the dominant process of electron emission in nearly the entire XUV range in large droplets with radius ≳40 nm. Indirect ICD processes induced by electron scattering likely play an important role in other condensed-phase systems exposed to ionizing radiation as well, including biological matter.
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Affiliation(s)
- L Ben Ltaief
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
| | - K Sishodia
- Quantum Center of Excellence for Diamond and Emergent Materials and Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India
| | - S Mandal
- Indian Institute of Science Education and Research, Pune 411008, India
| | - S De
- Quantum Center of Excellence for Diamond and Emergent Materials and Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India
| | - S R Krishnan
- Quantum Center of Excellence for Diamond and Emergent Materials and Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India
| | - C Medina
- Institute of Physics, University of Freiburg, 79104 Freiburg, Germany
| | - N Pal
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - R Richter
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - T Fennel
- Institute for Physics, University of Rostock, 18051 Rostock, Germany
| | - M Mudrich
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
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2
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Schäfer JL, Langkabel F, Bande A. Three-Electron Dynamics of the Interparticle Coulombic Decay in Doubly Excited Clusters with One-Dimensional Continuum Confinement. Molecules 2022; 27:8713. [PMID: 36557847 PMCID: PMC9784222 DOI: 10.3390/molecules27248713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/02/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022] Open
Abstract
A detailed analysis of the electronic structure and decay dynamics in a symmetric system with three electrons in three linearly aligned binding sites representing quantum dots (QDs) is given. The two outer A QDs are two-level potentials and can act as (virtual) photon emitters, whereas the central B QD can be ionized from its one level into a continuum confined on the QD axis upon absorbing virtual photons in the inter-Coulombic decay (ICD) process. Two scenarios in such an ABA array are explored. One ICD process is from a singly excited resonance state, whose decay releasing one virtual photon we find superimposed with resonance energy transfer among both A QDs. Moreover, the decay-process manifold for a doubly excited (DE) resonance is explored, in which collective ICD among all three sites and excited ICD among the outer QDs engage. Rates for all processes are found to be extremely low, although ICD rates with two neighbors are predicted to double compared to ICD among two sites only. The slowing is caused by Coulomb barriers imposed from ground or excited state electrons in the A sites. Outliers occur on the one hand at short distances, where the charge transfer among QDs mixes the possible decay pathways. On the other hand, we discovered a shape resonance-enhanced DE-ICD pathway, in which an excited and localized B* shape resonance state forms, which is able to decay quickly into the final ICD continuum.
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Affiliation(s)
- Joana-Lysiane Schäfer
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Fabian Langkabel
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Annika Bande
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
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3
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Yao Y, Zhang J, Kong W. Effects of aromatic molecules inside argon clusters on the formation of multiply charged atomic ions in moderately intense nanosecond laser fields. J Chem Phys 2022; 157:044307. [DOI: 10.1063/5.0096594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report the effect of two molecular species, fluorene (C13H10) and 1, 3, 5-trichlorobenzene (C6H3Cl3, 3ClB), embedded in atomic argon clusters, on the generation of multiply charged atomic ions (MCAI) in moderately intense nanosecond laser fields at 532 nm. The near resonant-enhancement of two photon absorption in the two aromatic species produces only a few low charge state (+2) atomic ions in a neat molecular cluster, but enclosure of the same cluster with layers of Ar can significantly increase the charge state of MCAI. The yields of singly charged atomic ions from the molecular species, such as H+, C+, and Cl+, are positively correlated to the number of molecules inside an Ar cluster, but the yields of the MCAI and Ar+ demonstrate opposite behaviors. A higher number of aromatic molecules is actually detrimental to the production of Ar+ and of MCAI. Results of exponential fittings of the yields of MCAI at different laser intensities reveal a systematic change for the exponent of Ar+: with increasing concentrations of 3ClB in Ar clusters, the exponent decreases and eventually reaches the same value as those of MCAI. These results are consistent with our previous hypothesis that the formation mechanism of MCAI may be different from that of singly charged species, and that the strong resonance of Ar3+ may play an important role in the overall energy absorption. Moreover, the effect of the molecular core seems to change the formation mechanism of Ar+ to that of MCAI.
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Affiliation(s)
- Yuzhong Yao
- Oregon State University, United States of America
| | - Jie Zhang
- Chemistry, Oregon State University, United States of America
| | - Wei Kong
- Chemistry, Oregon State University, United States of America
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4
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Albertini S, Gruber E, Zappa F, Krasnokutski S, Laimer F, Scheier P. Chemistry and physics of dopants embedded in helium droplets. MASS SPECTROMETRY REVIEWS 2022; 41:529-567. [PMID: 33993543 DOI: 10.1002/mas.21699] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/20/2021] [Accepted: 04/20/2021] [Indexed: 05/18/2023]
Abstract
Helium droplets represent a cold inert matrix, free of walls with outstanding properties to grow complexes and clusters at conditions that are perfect to simulate cold and dense regions of the interstellar medium. At sub-Kelvin temperatures, barrierless reactions triggered by radicals or ions have been observed and studied by optical spectroscopy and mass spectrometry. The present review summarizes developments of experimental techniques and methods and recent results they enabled.
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Affiliation(s)
- Simon Albertini
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Innsbruck, Austria
| | - Elisabeth Gruber
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Innsbruck, Austria
| | - Fabio Zappa
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Innsbruck, Austria
| | - Serge Krasnokutski
- Laboratory Astrophysics Group of the MPI for Astronomy, University of Jena, Jena, Germany
| | - Felix Laimer
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Innsbruck, Austria
| | - Paul Scheier
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Innsbruck, Austria
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5
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Asmussen JD, Michiels R, Bangert U, Sisourat N, Binz M, Bruder L, Danailov M, Di Fraia M, Feifel R, Giannessi L, Plekan O, Prince KC, Squibb RJ, Uhl D, Wituschek A, Zangrando M, Callegari C, Stienkemeier F, Mudrich M. Time-Resolved Ultrafast Interatomic Coulombic Decay in Superexcited Sodium-Doped Helium Nanodroplets. J Phys Chem Lett 2022; 13:4470-4478. [PMID: 35561339 DOI: 10.1021/acs.jpclett.2c00645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The autoionization dynamics of superexcited superfluid He nanodroplets doped with Na atoms is studied by extreme-ultraviolet (XUV) time-resolved electron spectroscopy. Following excitation into the higher-lying droplet absorption band, the droplet relaxes into the lowest metastable atomic 1s2s 1,3S states from which interatomic Coulombic decay (ICD) takes place either between two excited He atoms or between an excited He atom and a Na atom attached to the droplet surface. Four main ICD channels are identified, and their decay times are determined by varying the delay between the XUV pulse and a UV pulse that ionizes the initial excited state and thereby quenches ICD. The decay times for the different channels all fall in the range of ∼1 ps, indicating that the ICD dynamics are mainly determined by the droplet environment. A periodic modulation of the transient ICD signals is tentatively attributed to the oscillation of the bubble forming around the localized He excitation.
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Affiliation(s)
- Jakob D Asmussen
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
| | - Rupert Michiels
- Institute of Physics, University of Freiburg, 79104 Freiburg im Breisgau, Germany
| | - Ulrich Bangert
- Institute of Physics, University of Freiburg, 79104 Freiburg im Breisgau, Germany
| | - Nicolas Sisourat
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique Matière et Rayonnement, 75005 Paris, France
| | - Marcel Binz
- Institute of Physics, University of Freiburg, 79104 Freiburg im Breisgau, Germany
| | - Lukas Bruder
- Institute of Physics, University of Freiburg, 79104 Freiburg im Breisgau, Germany
| | | | | | - Raimund Feifel
- Department of Physics, University of Gothenburg, 41133 Gothenburg, Sweden
| | - Luca Giannessi
- Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza TS, Italy
| | - Oksana Plekan
- Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza TS, Italy
| | - Kevin C Prince
- Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza TS, Italy
| | - Richard J Squibb
- Department of Physics, University of Gothenburg, 41133 Gothenburg, Sweden
| | - Daniel Uhl
- Institute of Physics, University of Freiburg, 79104 Freiburg im Breisgau, Germany
| | - Andreas Wituschek
- Institute of Physics, University of Freiburg, 79104 Freiburg im Breisgau, Germany
| | - Marco Zangrando
- Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza TS, Italy
| | - Carlo Callegari
- Elettra-Sincrotrone Trieste S.C.p.A., 34149 Basovizza TS, Italy
| | - Frank Stienkemeier
- Institute of Physics, University of Freiburg, 79104 Freiburg im Breisgau, Germany
| | - Marcel Mudrich
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
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6
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Cederbaum LS, Kuleff AI. Impact of cavity on interatomic Coulombic decay. Nat Commun 2021; 12:4083. [PMID: 34215732 PMCID: PMC8253799 DOI: 10.1038/s41467-021-24221-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 06/04/2021] [Indexed: 11/25/2022] Open
Abstract
The interatomic Coulombic decay (ICD) is an efficient electronic decay process of systems embedded in environment. In ICD, the excess energy of an excited atom A is efficiently utilized to ionize a neighboring atom B. In quantum light, an ensemble of atoms A form polaritonic states which can undergo ICD with B. Here we investigate the impact of quantum light on ICD and show that this process is strongly altered compared to classical ICD. The ICD rate depends sensitively on the atomic distribution and orientation of the ensemble. It is stressed that in contrast to superposition states formed by a laser, forming polaritons by a cavity enables to control the emergence and suppression, as well as the efficiency of ICD.
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Affiliation(s)
- Lorenz S Cederbaum
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Heidelberg, Germany.
| | - Alexander I Kuleff
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Heidelberg, Germany.
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7
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Jahnke T, Hergenhahn U, Winter B, Dörner R, Frühling U, Demekhin PV, Gokhberg K, Cederbaum LS, Ehresmann A, Knie A, Dreuw A. Interatomic and Intermolecular Coulombic Decay. Chem Rev 2020; 120:11295-11369. [PMID: 33035051 PMCID: PMC7596762 DOI: 10.1021/acs.chemrev.0c00106] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Indexed: 12/11/2022]
Abstract
Interatomic or intermolecular Coulombic decay (ICD) is a nonlocal electronic decay mechanism occurring in weakly bound matter. In an ICD process, energy released by electronic relaxation of an excited atom or molecule leads to ionization of a neighboring one via Coulombic electron interactions. ICD has been predicted theoretically in the mid nineties of the last century, and its existence has been confirmed experimentally approximately ten years later. Since then, a number of fundamental and applied aspects have been studied in this quickly growing field of research. This review provides an introduction to ICD and draws the connection to related energy transfer and ionization processes. The theoretical approaches for the description of ICD as well as the experimental techniques developed and employed for its investigation are described. The existing body of literature on experimental and theoretical studies of ICD processes in different atomic and molecular systems is reviewed.
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Affiliation(s)
- Till Jahnke
- Institut
für Kernphysik, Goethe Universität, Max-von-Laue-Str. 1, 60438 Frankfurt, Germany
| | - Uwe Hergenhahn
- Fritz-Haber-Institut
der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
- Max
Planck Institute for Plasma Physics, Wendelsteinstr. 1, 17491 Greifswald, Germany
- Leibniz
Institute of Surface Engineering (IOM), 04318 Leipzig, Germany
| | - Bernd Winter
- Fritz-Haber-Institut
der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Reinhard Dörner
- Institut
für Kernphysik, Goethe Universität, Max-von-Laue-Str. 1, 60438 Frankfurt, Germany
| | - Ulrike Frühling
- Institut
für Experimentalphysik and Center for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Philipp V. Demekhin
- Institut
für Physik und CINSaT, Universität
Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - Kirill Gokhberg
- Physical-Chemistry
Institute, Ruprecht-Karls University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - Lorenz S. Cederbaum
- Physical-Chemistry
Institute, Ruprecht-Karls University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - Arno Ehresmann
- Institut
für Physik und CINSaT, Universität
Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - André Knie
- Institut
für Physik und CINSaT, Universität
Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - Andreas Dreuw
- Interdisciplinary
Center for Scientific Computing, Ruprecht-Karls
University, Im Neuenheimer
Feld 205, 69120 Heidelberg, Germany
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8
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Oelze T, Kulyk O, Schütte B, Frühling U, Klimešová E, Jagielski B, Dittrich L, Drescher M, Pan R, Stojanovic N, Polovinkin V, Khakurel KP, Muehlig K, Bermudez Macias IJ, Düsterer S, Faatz B, Andreasson J, Wieland M, Krikunova M. THz streak camera performance for single-shot characterization of XUV pulses with complex temporal structures. OPTICS EXPRESS 2020; 28:20686-20703. [PMID: 32680123 DOI: 10.1364/oe.393547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 06/01/2020] [Indexed: 06/11/2023]
Abstract
The THz-field-driven streak camera has proven to be a powerful diagnostic-technique that enables the shot-to-shot characterization of the duration and the arrival time jitter of free electron laser (FEL) pulses. Here we investigate the performance of three computational approaches capable to determine the duration of FEL pulses with complex temporal structures from single-shot measurements of up to three simultaneously recorded spectra. We use numerically simulated FEL pulses in order to validate the accuracy of the pulse length retrieval in average as well as in a single-shot mode. We discuss requirements for the THz field strength in order to achieve reliable results and compare our numerical study with the analysis of experimental data that were obtained at the FEL in Hamburg - FLASH.
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9
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Ben Ltaief L, Shcherbinin M, Mandal S, Krishnan SR, LaForge AC, Richter R, Turchini S, Zema N, Pfeifer T, Fasshauer E, Sisourat N, Mudrich M. Charge Exchange Dominates Long-Range Interatomic Coulombic Decay of Excited Metal-Doped Helium Nanodroplets. J Phys Chem Lett 2019; 10:6904-6909. [PMID: 31625747 DOI: 10.1021/acs.jpclett.9b02726] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Atoms and molecules attached to rare-gas clusters are ionized by an interatomic autoionization process traditionally termed "Penning ionization" when the host cluster is resonantly excited. Here we analyze this process in the light of the interatomic Coulombic decay (ICD) mechanism, which usually contains a contribution from charge exchange at a short interatomic distance and one from virtual photon transfer at a large interatomic distance. For helium (He) nanodroplets doped with alkali metal atoms (Li, Rb), we show that long-range and short-range contributions to the interatomic autoionization can be clearly distinguished by detecting electrons and ions in coincidence. Surprisingly, ab initio calculations show that even for alkali metal atoms floating in dimples at a large distance from the nanodroplet surface, autoionization is largely dominated by charge-exchange ICD. Furthermore, the measured electron spectra manifest the ultrafast internal relaxation of the droplet mainly into the 1s2s1S state and partially into the metastable 1s2s3S state.
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Affiliation(s)
- L Ben Ltaief
- Department of Physics and Astronomy , Aarhus University , 8000 Aarhus C , Denmark
| | - M Shcherbinin
- Department of Physics and Astronomy , Aarhus University , 8000 Aarhus C , Denmark
| | - S Mandal
- Indian Institute of Science Education and Research , Pune 411008 , India
| | - S R Krishnan
- Department of Physics , Indian Institute of Technology , Madras, Chennai 600 036 , India
| | - A C LaForge
- Department of Physics , University of Connecticut , Storrs , Connecticut 06269 , United States
| | - R Richter
- Elettra-Sincrotrone Trieste , Basovizza, 34149 Trieste , Italy
| | - S Turchini
- Istituto Struttura della Materia-CNR (ISM-CNR) , 00133 Roma , Italy
| | - N Zema
- Istituto Struttura della Materia-CNR (ISM-CNR) , 00133 Roma , Italy
| | - T Pfeifer
- Max-Planck-Institut für Kernphysik , 69117 Heidelberg , Germany
| | - E Fasshauer
- Department of Physics and Astronomy , Aarhus University , 8000 Aarhus C , Denmark
| | - N Sisourat
- Sorbonne Université, CNRS , Laboratoire de Chimie Physique Matière et Rayonnement, UMR 7614 , F-75005 Paris , France
| | - M Mudrich
- Department of Physics and Astronomy , Aarhus University , 8000 Aarhus C , Denmark
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10
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Kelbg M, Zabel M, Krebs B, Kazak L, Meiwes-Broer KH, Tiggesbäumker J. Auger emission from the Coulomb explosion of helium nanoplasmas. J Chem Phys 2019; 150:204302. [DOI: 10.1063/1.5089943] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M. Kelbg
- Institut für Physik, Universität Rostock, 18059 Rostock, Germany
| | - M. Zabel
- Institut für Physik, Universität Rostock, 18059 Rostock, Germany
| | - B. Krebs
- Institut für Physik, Universität Rostock, 18059 Rostock, Germany
| | - L. Kazak
- Institut für Physik, Universität Rostock, 18059 Rostock, Germany
| | - K.-H. Meiwes-Broer
- Institut für Physik, Universität Rostock, 18059 Rostock, Germany
- Department of Life, Light and Matter, Universität Rostock, 18059 Rostock, Germany
| | - J. Tiggesbäumker
- Institut für Physik, Universität Rostock, 18059 Rostock, Germany
- Department of Life, Light and Matter, Universität Rostock, 18059 Rostock, Germany
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11
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Bruder L, Eisfeld A, Bangert U, Binz M, Jakob M, Uhl D, Schulz-Weiling M, Grant ER, Stienkemeier F. Delocalized excitons and interaction effects in extremely dilute thermal ensembles. Phys Chem Chem Phys 2019; 21:2276-2282. [PMID: 30443651 PMCID: PMC6369671 DOI: 10.1039/c8cp05851b] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Long-range interparticle interactions are revealed in extremely dilute thermal atomic ensembles using highly sensitive nonlinear femtosecond spectroscopy. Delocalized excitons are detected in the atomic systems at particle densities where the mean interatomic distance (>10 μm) is much greater than the laser wavelength and multi-particle coherences should destructively interfere over the ensemble average. With a combined experimental and theoretical analysis, we identify an effective interaction mechanism, presumably of dipolar nature, as the origin of the excitonic signals. Our study implies that even in highly-dilute thermal atom ensembles, significant transition dipole-dipole interaction networks may form that require advanced modeling beyond the nearest neighbor approximation to quantitatively capture the details of their many-body properties.
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Affiliation(s)
- Lukas Bruder
- Institute of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany.
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12
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Schütte B, Peltz C, Austin DR, Strüber C, Ye P, Rouzée A, Vrakking MJJ, Golubev N, Kuleff AI, Fennel T, Marangos JP. Low-Energy Electron Emission in the Strong-Field Ionization of Rare Gas Clusters. PHYSICAL REVIEW LETTERS 2018; 121:063202. [PMID: 30141654 DOI: 10.1103/physrevlett.121.063202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Indexed: 06/08/2023]
Abstract
Clusters and nanoparticles have been widely investigated to determine how plasmonic near fields influence the strong-field induced energetic electron emission from finite systems. We focus on the contrary, i.e., the slow electrons, and discuss a hitherto unidentified low-energy structure (LES) in the photoemission spectra of rare gas clusters in intense near-infrared laser pulses. For Ar and Kr clusters we find, besides field-driven fast electrons, a robust and nearly isotropic emission of electrons with <4 eV kinetic energies that dominates the total yield. Molecular dynamics simulations reveal a correlated few-body decay process involving quasifree electrons and multiply excited ions in the nonequilibrium nanoplasma that results in a dominant LES feature. Our results indicate that the LES emission occurs after significant nanoplasma expansion, and that it is a generic phenomenon in intense laser nanoparticle interactions, which is likely to influence the formation of highly charged ions.
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Affiliation(s)
- Bernd Schütte
- Department of Physics, Imperial College London, South Kensington Campus, SW7 2AZ London, United Kingdom
| | - Christian Peltz
- Institute of Physics, University of Rostock, Albert-Einstein-Strasse 23, 18059 Rostock, Germany
| | - Dane R Austin
- Department of Physics, Imperial College London, South Kensington Campus, SW7 2AZ London, United Kingdom
| | - Christian Strüber
- Department of Physics, Imperial College London, South Kensington Campus, SW7 2AZ London, United Kingdom
| | - Peng Ye
- Department of Physics, Imperial College London, South Kensington Campus, SW7 2AZ London, United Kingdom
| | - Arnaud Rouzée
- Max-Born-Institut, Max-Born-Strasse 2A, 12489 Berlin, Germany
| | | | - Nikolay Golubev
- Theoretische Chemie, PCI, Universität Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - Alexander I Kuleff
- Theoretische Chemie, PCI, Universität Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
- ELI-ALPS, Budapesti út 5, H-6728 Szeged, Hungary
| | - Thomas Fennel
- Institute of Physics, University of Rostock, Albert-Einstein-Strasse 23, 18059 Rostock, Germany
- Max-Born-Institut, Max-Born-Strasse 2A, 12489 Berlin, Germany
| | - Jon P Marangos
- Department of Physics, Imperial College London, South Kensington Campus, SW7 2AZ London, United Kingdom
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13
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Seddon EA, Clarke JA, Dunning DJ, Masciovecchio C, Milne CJ, Parmigiani F, Rugg D, Spence JCH, Thompson NR, Ueda K, Vinko SM, Wark JS, Wurth W. Short-wavelength free-electron laser sources and science: a review. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2017; 80:115901. [PMID: 29059048 DOI: 10.1088/1361-6633/aa7cca] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
This review is focused on free-electron lasers (FELs) in the hard to soft x-ray regime. The aim is to provide newcomers to the area with insights into: the basic physics of FELs, the qualities of the radiation they produce, the challenges of transmitting that radiation to end users and the diversity of current scientific applications. Initial consideration is given to FEL theory in order to provide the foundation for discussion of FEL output properties and the technical challenges of short-wavelength FELs. This is followed by an overview of existing x-ray FEL facilities, future facilities and FEL frontiers. To provide a context for information in the above sections, a detailed comparison of the photon pulse characteristics of FEL sources with those of other sources of high brightness x-rays is made. A brief summary of FEL beamline design and photon diagnostics then precedes an overview of FEL scientific applications. Recent highlights are covered in sections on structural biology, atomic and molecular physics, photochemistry, non-linear spectroscopy, shock physics, solid density plasmas. A short industrial perspective is also included to emphasise potential in this area.
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Affiliation(s)
- E A Seddon
- ASTeC, STFC Daresbury Laboratory, Sci-Tech Daresbury, Keckwick Lane, Daresbury, Cheshire, WA4 4AD, United Kingdom. The School of Physics and Astronomy and Photon Science Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom. The Cockcroft Institute, Sci-Tech Daresbury, Keckwick Lane, Daresbury, Cheshire, WA4 4AD, United Kingdom
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14
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Wilhelm RA, Gruber E, Schwestka J, Kozubek R, Madeira TI, Marques JP, Kobus J, Krasheninnikov AV, Schleberger M, Aumayr F. Interatomic Coulombic Decay: The Mechanism for Rapid Deexcitation of Hollow Atoms. PHYSICAL REVIEW LETTERS 2017; 119:103401. [PMID: 28949190 DOI: 10.1103/physrevlett.119.103401] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Indexed: 05/23/2023]
Abstract
The impact of a highly charged ion onto a solid gives rise to charge exchange between the ion and target atoms, so that a slow ion gets neutralized in the vicinity of the surface. Using highly charged Ar and Xe ions and the surface-only material graphene as a target, we show that the neutralization and deexcitation of the ions proceeds on a sub-10 fs time scale. We further demonstrate that a multiple Interatomic Coulombic Decay (ICD) model can describe the observed ultrafast deexcitation. Other deexcitation mechanisms involving nonradiative decay and quasimolecular orbital formation during the impact are not important, as follows from the comparison of our experimental data with the results of first-principles calculations. Our method also enables the estimation of ICD rates directly.
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Affiliation(s)
- Richard A Wilhelm
- TU Wien, Institute of Applied Physics, Wiedner Hauptstrasse 8-10, 1040 Vienna, Austria, EU
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328 Dresden, Germany, EU
| | - Elisabeth Gruber
- TU Wien, Institute of Applied Physics, Wiedner Hauptstrasse 8-10, 1040 Vienna, Austria, EU
| | - Janine Schwestka
- TU Wien, Institute of Applied Physics, Wiedner Hauptstrasse 8-10, 1040 Vienna, Austria, EU
| | - Roland Kozubek
- University Duisburg-Essen, Faculty of Physics and CENIDE, Lotharstrasse 1, 47048 Duisburg, Germany, EU
| | - Teresa I Madeira
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328 Dresden, Germany, EU
| | - José P Marques
- BioISI-Biosystems & Integrative Sciences Institute, Faculdade de Ciéncias da Universidade de Lisboa, 1749-016 Lisbon, Portugal, EU
| | - Jacek Kobus
- Nicolaus Copernicus University, Faculty of Physics, Astronomy and Informatics, Institute of Physics, Grudziądzka 5, 87-100 Toruń, Poland, EU
| | - Arkady V Krasheninnikov
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328 Dresden, Germany, EU
| | - Marika Schleberger
- University Duisburg-Essen, Faculty of Physics and CENIDE, Lotharstrasse 1, 47048 Duisburg, Germany, EU
| | - Friedrich Aumayr
- TU Wien, Institute of Applied Physics, Wiedner Hauptstrasse 8-10, 1040 Vienna, Austria, EU
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15
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Farrokhpour H, Dehdashti Jahromi M. Absorption spectra of small helium Nano clusters (4He ; n= 2–29) and characterization of their low-lying excited states. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.01.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Takanashi T, Golubev NV, Callegari C, Fukuzawa H, Motomura K, Iablonskyi D, Kumagai Y, Mondal S, Tachibana T, Nagaya K, Nishiyama T, Matsunami K, Johnsson P, Piseri P, Sansone G, Dubrouil A, Reduzzi M, Carpeggiani P, Vozzi C, Devetta M, Negro M, Faccialà D, Calegari F, Trabattoni A, Castrovilli MC, Ovcharenko Y, Mudrich M, Stienkemeier F, Coreno M, Alagia M, Schütte B, Berrah N, Plekan O, Finetti P, Spezzani C, Ferrari E, Allaria E, Penco G, Serpico C, De Ninno G, Diviacco B, Di Mitri S, Giannessi L, Jabbari G, Prince KC, Cederbaum LS, Demekhin PV, Kuleff AI, Ueda K. Time-Resolved Measurement of Interatomic Coulombic Decay Induced by Two-Photon Double Excitation of Ne_{2}. PHYSICAL REVIEW LETTERS 2017; 118:033202. [PMID: 28157370 DOI: 10.1103/physrevlett.118.033202] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Indexed: 06/06/2023]
Abstract
The hitherto unexplored two-photon doubly excited states [Ne^{*}(2p^{-1}3s)]_{2} were experimentally identified using the seeded, fully coherent, intense extreme ultraviolet free-electron laser FERMI. These states undergo ultrafast interatomic Coulombic decay (ICD), which predominantly produces singly ionized dimers. In order to obtain the rate of ICD, the resulting yield of Ne_{2}^{+} ions was recorded as a function of delay between the extreme ultraviolet pump and UV probe laser pulses. The extracted lifetimes of the long-lived doubly excited states, 390(-130/+450) fs, and of the short-lived ones, less than 150 fs, are in good agreement with ab initio quantum mechanical calculations.
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Affiliation(s)
- T Takanashi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - N V Golubev
- Theoretische Chemie, Universität Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - C Callegari
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - H Fukuzawa
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - K Motomura
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - D Iablonskyi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - Y Kumagai
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - S Mondal
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - T Tachibana
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - K Nagaya
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - T Nishiyama
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - K Matsunami
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - P Johnsson
- Department of Physics, Lund University, P.O. Box 118, 22100 Lund, Sweden
| | - P Piseri
- CIMAINA and Dipartimento di Fisica, Università degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy
| | - G Sansone
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- Physikalisches Institut Albert-Ludwigs-Universität, Stefan-Meier-Strasse 19 79104 Freiburg, Germany
| | - A Dubrouil
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - M Reduzzi
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - P Carpeggiani
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - C Vozzi
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - M Devetta
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - M Negro
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - D Faccialà
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - F Calegari
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- Center for Free-Electron Laser Science, DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - A Trabattoni
- CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- Center for Free-Electron Laser Science, DESY, Notkestr. 85, 22607 Hamburg, Germany
| | | | - Y Ovcharenko
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany
| | - M Mudrich
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - F Stienkemeier
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - M Coreno
- CNR-ISM, Area Science Park, 34149 Basovizza, Trieste, Italy
| | - M Alagia
- CNR-IOM, Area Science Park, 34149 Basovizza, Trieste, Italy
| | - B Schütte
- Max-Born-Institut, Max-Born-Strasse 2 A, 12489 Berlin, Germany
| | - N Berrah
- Department of Physics, University of Connecticut, 2152 Hillside Road, Storrs, Connecticut 06269, USA
| | - O Plekan
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - P Finetti
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - C Spezzani
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - E Ferrari
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - E Allaria
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - G Penco
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - C Serpico
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - G De Ninno
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
- Laboratory of Quantum Optics, University of Nova Gorica, 5001 Nova Gorica, Slovenia
| | - B Diviacco
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - S Di Mitri
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - L Giannessi
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - G Jabbari
- Theoretische Chemie, Universität Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - K C Prince
- Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
- CNR-IOM, Area Science Park, 34149 Basovizza, Trieste, Italy
| | - L S Cederbaum
- Theoretische Chemie, Universität Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - Ph V Demekhin
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - A I Kuleff
- Theoretische Chemie, Universität Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - K Ueda
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
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17
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Correlated electronic decay in expanding clusters triggered by intense XUV pulses from a Free-Electron-Laser. Sci Rep 2017; 7:40736. [PMID: 28098175 PMCID: PMC5241628 DOI: 10.1038/srep40736] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 12/09/2016] [Indexed: 11/08/2022] Open
Abstract
Irradiation of nanoscale clusters and large molecules with intense laser pulses transforms them into highly-excited non- equilibrium states. The dynamics of intense laser-cluster interaction is encoded in electron kinetic energy spectra, which contain signatures of direct photoelectron emission as well as emission of thermalized nanoplasma electrons. In this work we report on a so far not observed spectrally narrow bound state signature in the electron kinetic energy spectra from mixed Xe core - Ar shell clusters ionized by intense extreme-ultraviolet (XUV) pulses from a free-electron-laser. This signature is attributed to the correlated electronic decay (CED) process, in which an excited atom relaxes and the excess energy is used to ionize the same or another excited atom or a nanoplasma electron. By applying the terahertz field streaking principle we demonstrate that CED-electrons are emitted at least a few picoseconds after the ionizing XUV pulse has ended. Following the recent finding of CED in clusters ionized by intense near-infrared laser pulses, our observation of CED in the XUV range suggests that this process is of general relevance for the relaxation dynamics in laser produced nanoplasmas.
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18
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Iablonskyi D, Nagaya K, Fukuzawa H, Motomura K, Kumagai Y, Mondal S, Tachibana T, Takanashi T, Nishiyama T, Matsunami K, Johnsson P, Piseri P, Sansone G, Dubrouil A, Reduzzi M, Carpeggiani P, Vozzi C, Devetta M, Negro M, Calegari F, Trabattoni A, Castrovilli MC, Faccialà D, Ovcharenko Y, Möller T, Mudrich M, Stienkemeier F, Coreno M, Alagia M, Schütte B, Berrah N, Kuleff AI, Jabbari G, Callegari C, Plekan O, Finetti P, Spezzani C, Ferrari E, Allaria E, Penco G, Serpico C, De Ninno G, Nikolov I, Diviacco B, Di Mitri S, Giannessi L, Prince KC, Ueda K. Slow Interatomic Coulombic Decay of Multiply Excited Neon Clusters. PHYSICAL REVIEW LETTERS 2016; 117:276806. [PMID: 28084773 DOI: 10.1103/physrevlett.117.276806] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Indexed: 06/06/2023]
Abstract
Ne clusters (∼5000 atoms) were resonantly excited (2p→3s) by intense free electron laser (FEL) radiation at FERMI. Such multiply excited clusters can decay nonradiatively via energy exchange between at least two neighboring excited atoms. Benefiting from the precise tunability and narrow bandwidth of seeded FEL radiation, specific sites of the Ne clusters were probed. We found that the relaxation of cluster surface atoms proceeds via a sequence of interatomic or intermolecular Coulombic decay (ICD) processes while ICD of bulk atoms is additionally affected by the surrounding excited medium via inelastic electron scattering. For both cases, cluster excitations relax to atomic states prior to ICD, showing that this kind of ICD is rather slow (picosecond range). Controlling the average number of excitations per cluster via the FEL intensity allows a coarse tuning of the ICD rate.
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Affiliation(s)
- D Iablonskyi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - K Nagaya
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - H Fukuzawa
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - K Motomura
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - Y Kumagai
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - S Mondal
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - T Tachibana
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - T Takanashi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - T Nishiyama
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - K Matsunami
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - P Johnsson
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - P Piseri
- Dipartimento di Fisica, Università degli Studi di Milano, 20133 Milano, Italy
| | - G Sansone
- CNR-IFN, 20133 Milan, Italy
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | | | | | | | | | | | | | - F Calegari
- CNR-IFN, 20133 Milan, Italy
- Center for Free-Electron Laser Science, DESY, 22607 Hamburg, Germany
| | - A Trabattoni
- CNR-IFN, 20133 Milan, Italy
- Center for Free-Electron Laser Science, DESY, 22607 Hamburg, Germany
| | | | - D Faccialà
- Dipartimento di Fisica, Politecnico di Milano, 20133 Milan, Italy
| | - Y Ovcharenko
- Institut für Optik und Atomare Physik, TU Berlin, 10623 Berlin, Germany
| | - T Möller
- Institut für Optik und Atomare Physik, TU Berlin, 10623 Berlin, Germany
| | - M Mudrich
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - F Stienkemeier
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - M Coreno
- CNR-ISM, Area Science Park, 34149 Trieste, Italy
| | - M Alagia
- CNR-IOM, Area Science Park, 34149 Trieste, Italy
| | - B Schütte
- Max-Born-Institut, 12489 Berlin, Germany
| | - N Berrah
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
| | - A I Kuleff
- Theoretische Chemie, Universität Heidelberg, 69120 Heidelberg, Germany
| | - G Jabbari
- Theoretische Chemie, Universität Heidelberg, 69120 Heidelberg, Germany
| | - C Callegari
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - O Plekan
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - P Finetti
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - C Spezzani
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - E Ferrari
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - E Allaria
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - G Penco
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - C Serpico
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - G De Ninno
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
- Laboratory of Quantum Optics, University of Nova Gorica, 5001 Nova Gorica, Slovenia
| | - I Nikolov
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - B Diviacco
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - S Di Mitri
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - L Giannessi
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - K C Prince
- CNR-IOM, Area Science Park, 34149 Trieste, Italy
- Elettra-Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy
| | - K Ueda
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
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19
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He Y, Zhang J, Kong W. Electron impact ionization and multiphoton ionization of doped superfluid helium droplets: A comparison. J Chem Phys 2016; 144:084302. [PMID: 26931697 DOI: 10.1063/1.4942473] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We compare characteristics of electron impact ionization (EI) and multiphoton ionization (MPI) of doped superfluid helium droplets using the same droplet source. Selected dopant ion fragments from the two ionization schemes demonstrate different dependence on the doping pressure, which could be attributed to the different ionization mechanisms. While EI directly ionizes helium atoms in a droplet therefore has higher yields for bigger droplets (within a limited size range), MPI is insensitive to the helium in a droplet and is only dependent on the number of dopant molecules. The optimal timing of the ionization pulse also varies with the doping pressure, implying a velocity slip among different sized droplets. Calculations of the doping statistics and ionization probabilities qualitatively agree with the experimental data. Our results offer a word of caution in interpreting the pressure and timing dependence of superfluid helium droplets, and we also devise a scheme in achieving a high degree of doping while limiting the contribution of dopant clusters.
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Affiliation(s)
- Yunteng He
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA
| | - Jie Zhang
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA
| | - Wei Kong
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA
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20
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Nagaya K, Iablonskyi D, Golubev NV, Matsunami K, Fukuzawa H, Motomura K, Nishiyama T, Sakai T, Tachibana T, Mondal S, Wada S, Prince KC, Callegari C, Miron C, Saito N, Yabashi M, Demekhin PV, Cederbaum LS, Kuleff AI, Yao M, Ueda K. Interatomic Coulombic decay cascades in multiply excited neon clusters. Nat Commun 2016; 7:13477. [PMID: 27917867 PMCID: PMC5150215 DOI: 10.1038/ncomms13477] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 10/07/2016] [Indexed: 11/21/2022] Open
Abstract
In high-intensity laser light, matter can be ionized by direct multiphoton absorption even at photon energies below the ionization threshold. However on tuning the laser to the lowest resonant transition, the system becomes multiply excited, and more efficient, indirect ionization pathways become operative. These mechanisms are known as interatomic Coulombic decay (ICD), where one of the species de-excites to its ground state, transferring its energy to ionize another excited species. Here we show that on tuning to a higher resonant transition, a previously unknown type of interatomic Coulombic decay, intra-Rydberg ICD occurs. In it, de-excitation of an atom to a close-lying Rydberg state leads to electron emission from another neighbouring Rydberg atom. Moreover, systems multiply excited to higher Rydberg states will decay by a cascade of such processes, producing even more ions. The intra-Rydberg ICD and cascades are expected to be ubiquitous in weakly-bound systems exposed to high-intensity resonant radiation. Interatomic Coulombic decay (ICD) is a relaxation of an atom in a weakly bound environment by the transfer of excess energy to ionize the neighbouring atom. Here the authors observe intra-Rydberg ICD in neon clusters, which is a decay that involves the ionization of Rydberg atoms in the cluster.
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Affiliation(s)
- K Nagaya
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan.,RIKEN SPring-8 Center, 679-5148 Hyogo, Japan
| | - D Iablonskyi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - N V Golubev
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, D-69120 Heidelberg, Germany
| | - K Matsunami
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - H Fukuzawa
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan.,Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - K Motomura
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan.,Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - T Nishiyama
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - T Sakai
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan
| | - T Tachibana
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - S Mondal
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
| | - S Wada
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan.,Department of Physical Science, Hiroshima University, 739-8526 Higashi-Hiroshima, Japan
| | - K C Prince
- Elettra-Sincrotrone Trieste, Basovizza, Trieste I-34149, Italy
| | - C Callegari
- Elettra-Sincrotrone Trieste, Basovizza, Trieste I-34149, Italy
| | - C Miron
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, FR-91192 Gif-sur-Yvette Cedex, France.,Extreme Light Infrastructure-Nuclear Physics (ELI-NP), 'Horia Hulubei' National Institute for Physics and Nuclear Engineering, RO-077125 Măgurele, Jud. Ilfov, Romania
| | - N Saito
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan.,National Metrology Institute of Japan, AIST, 305-8568 Tsukuba, Japan
| | - M Yabashi
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan
| | - Ph V Demekhin
- Theoretische Atom- und Molekülphysik, Institut für Physik und CINSaT, Universität Kassel, D-34132 Kassel, Germany
| | - L S Cederbaum
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, D-69120 Heidelberg, Germany
| | - A I Kuleff
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, D-69120 Heidelberg, Germany
| | - M Yao
- Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan.,Deceased
| | - K Ueda
- RIKEN SPring-8 Center, 679-5148 Hyogo, Japan.,Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan
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21
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Rupp D, Flückiger L, Adolph M, Gorkhover T, Krikunova M, Müller JP, Müller M, Oelze T, Ovcharenko Y, Röben B, Sauppe M, Schorb S, Wolter D, Mitzner R, Wöstmann M, Roling S, Harmand M, Treusch R, Arbeiter M, Fennel T, Bostedt C, Möller T. Recombination-Enhanced Surface Expansion of Clusters in Intense Soft X-Ray Laser Pulses. PHYSICAL REVIEW LETTERS 2016; 117:153401. [PMID: 27768378 DOI: 10.1103/physrevlett.117.153401] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Indexed: 06/06/2023]
Abstract
We studied the nanoplasma formation and explosion dynamics of single large xenon clusters in ultrashort, intense x-ray free-electron laser pulses via ion spectroscopy. The simultaneous measurement of single-shot diffraction images enabled a single-cluster analysis that is free from any averaging over the cluster size and laser intensity distributions. The measured charge state-resolved ion energy spectra show narrow distributions with peak positions that scale linearly with final ion charge state. These two distinct signatures are attributed to highly efficient recombination that eventually leads to the dominant formation of neutral atoms in the cluster. The measured mean ion energies exceed the value expected without recombination by more than an order of magnitude, indicating that the energy release resulting from electron-ion recombination constitutes a previously unnoticed nanoplasma heating process. This conclusion is supported by results from semiclassical molecular dynamics simulations.
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Affiliation(s)
- Daniela Rupp
- IOAP, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Leonie Flückiger
- IOAP, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
- ARC Centre of Excellence for Advanced Molecular Imaging, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Marcus Adolph
- IOAP, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Tais Gorkhover
- IOAP, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
- LCLS, SLAC, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Maria Krikunova
- IOAP, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Jan Philippe Müller
- IOAP, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Maria Müller
- IOAP, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Tim Oelze
- IOAP, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Yevheniy Ovcharenko
- IOAP, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Benjamin Röben
- IOAP, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Mario Sauppe
- IOAP, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Sebastian Schorb
- IOAP, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
- LCLS, SLAC, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - David Wolter
- IOAP, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Rolf Mitzner
- Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Michael Wöstmann
- Universität Münster, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | - Sebastian Roling
- Universität Münster, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | | | - Rolf Treusch
- FLASH, DESY, Notkestraße 85, 22603 Hamburg, Germany
| | - Mathias Arbeiter
- Institut für Physik, Universität Rostock, Albert-Einstein-Straße 23, 18059 Rostock, Germany
| | - Thomas Fennel
- Institut für Physik, Universität Rostock, Albert-Einstein-Straße 23, 18059 Rostock, Germany
| | - Christoph Bostedt
- LCLS, SLAC, 2575 Sand Hill Road, Menlo Park, California 94025, USA
- Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439, USA
- Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA
| | - Thomas Möller
- IOAP, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
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Observation of correlated electronic decay in expanding clusters triggered by near-infrared fields. Nat Commun 2015; 6:8596. [PMID: 26469997 PMCID: PMC4634218 DOI: 10.1038/ncomms9596] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 09/09/2015] [Indexed: 11/29/2022] Open
Abstract
When an excited atom is embedded into an environment, novel relaxation pathways can emerge that are absent for isolated atoms. A well-known example is interatomic Coulombic decay, where an excited atom relaxes by transferring its excess energy to another atom in the environment, leading to its ionization. Such processes have been observed in clusters ionized by extreme-ultraviolet and X-ray lasers. Here, we report on a correlated electronic decay process that occurs following nanoplasma formation and Rydberg atom generation in the ionization of clusters by intense, non-resonant infrared laser fields. Relaxation of the Rydberg states and transfer of the available electronic energy to adjacent electrons in Rydberg states or quasifree electrons in the expanding nanoplasma leaves a distinct signature in the electron kinetic energy spectrum. These so far unobserved electron-correlation-driven energy transfer processes may play a significant role in the response of any nano-scale system to intense laser light. In clusters, relaxation of excited atoms can lead to ionization of nearby atoms, a process known as interatomic Coulomb decay. Here, the authors report on a so far unobserved correlated electronic decay process following Rydberg atom generation in clusters ionized by intense near-infrared fields.
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von Vangerow J, John O, Stienkemeier F, Mudrich M. Dynamics of solvation and desolvation of rubidium attached to He nanodroplets. J Chem Phys 2015. [DOI: 10.1063/1.4926829] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J. von Vangerow
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - O. John
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - F. Stienkemeier
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - M. Mudrich
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
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Ziemkiewicz MP, Neumark DM, Gessner O. Ultrafast electronic dynamics in helium nanodroplets. INT REV PHYS CHEM 2015. [DOI: 10.1080/0144235x.2015.1051353] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Svetina C, Grazioli C, Mahne N, Raimondi L, Fava C, Zangrando M, Gerusina S, Alagia M, Avaldi L, Cautero G, de Simone M, Devetta M, Di Fraia M, Drabbels M, Feyer V, Finetti P, Katzy R, Kivimäki A, Lyamayev V, Mazza T, Moise A, Möller T, O’Keeffe P, Ovcharenko Y, Piseri P, Plekan O, Prince KC, Sergo R, Stienkemeier F, Stranges S, Coreno M, Callegari C. The Low Density Matter (LDM) beamline at FERMI: optical layout and first commissioning. JOURNAL OF SYNCHROTRON RADIATION 2015; 22:538-43. [PMID: 25931066 PMCID: PMC4416672 DOI: 10.1107/s1600577515005743] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 03/21/2015] [Indexed: 05/26/2023]
Abstract
The Low Density Matter (LDM) beamline has been built as part of the FERMI free-electron laser (FEL) facility to serve the atomic, molecular and cluster physics community. After the commissioning phase, it received the first external users at the end of 2012. The design and characterization of the LDM photon transport system is described, detailing the optical components of the beamline.
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Affiliation(s)
- Cristian Svetina
- Elettra-Sincrotrone Trieste, I-34149 Trieste, Italy
- Graduate School of Nanotechnology, University of Trieste, I-34127 Trieste, Italy
| | - Cesare Grazioli
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy
- CNR-IOM TASC, Area Science Park Basovizza, I-34149 Trieste, Italy
- Laboratory of Quantum Optics, University of Nova Gorica, Nova Gorica, Slovenia
| | - Nicola Mahne
- Elettra-Sincrotrone Trieste, I-34149 Trieste, Italy
| | | | - Claudio Fava
- Elettra-Sincrotrone Trieste, I-34149 Trieste, Italy
| | - Marco Zangrando
- Elettra-Sincrotrone Trieste, I-34149 Trieste, Italy
- CNR-IOM TASC, Area Science Park Basovizza, I-34149 Trieste, Italy
| | | | - Michele Alagia
- CNR-IOM TASC, Area Science Park Basovizza, I-34149 Trieste, Italy
| | - Lorenzo Avaldi
- CNR-ISM, Area della Ricerca di Roma 1, I-00015 Monterotondo Scalo, Italy
| | | | - Monica de Simone
- CNR-IOM TASC, Area Science Park Basovizza, I-34149 Trieste, Italy
| | - Michele Devetta
- Dipartimento di Fisica, Università degli Studi di Milano, Milano, Italy
| | | | | | - Vitaliy Feyer
- Peter Grünberg Institute (PGI-6) and JARA-FIT, Research Center Jülich, 52425 Jülich, Germany
| | | | | | - Antti Kivimäki
- CNR-IOM TASC, Area Science Park Basovizza, I-34149 Trieste, Italy
| | | | | | | | | | - Patrick O’Keeffe
- CNR-ISM, Area della Ricerca di Roma 1, I-00015 Monterotondo Scalo, Italy
| | | | - Paolo Piseri
- Dipartimento di Fisica, Università degli Studi di Milano, Milano, Italy
| | | | | | - Rudi Sergo
- Elettra-Sincrotrone Trieste, I-34149 Trieste, Italy
| | | | - Stefano Stranges
- CNR-IOM TASC, Area Science Park Basovizza, I-34149 Trieste, Italy
- Sapienza Università di Roma, I-00185 Roma, Italy
| | - Marcello Coreno
- Elettra-Sincrotrone Trieste, I-34149 Trieste, Italy
- CNR-ISM, Area Science Park, I-34149 Trieste, Italy
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26
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Ziemkiewicz MP, Bacellar C, Siefermann KR, Leone SR, Neumark DM, Gessner O. Femtosecond time-resolved XUV + UV photoelectron imaging of pure helium nanodroplets. J Chem Phys 2014; 141:174306. [DOI: 10.1063/1.4900503] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Michael P. Ziemkiewicz
- Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Camila Bacellar
- Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Katrin R. Siefermann
- Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Stephen R. Leone
- Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Chemistry, University of California, Berkeley, California 94720, USA
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - Daniel M. Neumark
- Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Oliver Gessner
- Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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