1
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Sen S, Mandal S, Sen A, Gopal R, Ben Ltaief L, Turchini S, Catone D, Zema N, Coreno M, Richter R, Mudrich M, Krishnan SR, Sharma V. Fragmentation dynamics of doubly charged camphor molecule following C 1s Auger decay. Phys Chem Chem Phys 2022; 24:2944-2957. [PMID: 35076648 DOI: 10.1039/d1cp05176h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The fragmentation dynamics of the gas-phase, doubly charged camphor molecule, formed by Auger decay following carbon 1s ionisation, using soft X-ray synchrotron radiation, is presented in this work. The technique of velocity map imaging combined with a photoelectron-photoion-photoion coincidence (VMI-PEPIPICO) is used for both electron energy and ion momentum (in-sequence) measurements. The experimental study is complemented by molecular dynamics simulation, performed with an NVT (moles, volume, and temperature) ensemble. Velocity Verlet algorithms were used for time integration at various internal energies. These simulations validate observed dissociation pathways. From these, we successfully deduce that the internal energy of the doubly charged molecular ion has a significant contribution to the fragmentation mechanism. Notably, a prominent signature of the internal energy was observed in the experimentally determined energies of the neutral fragment in these deferred charge separation pathways, entailing a more detailed theoretical study to uncover the exact dissociation dynamics.
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Affiliation(s)
- Sanket Sen
- Indian Institute of Technology Hyderabad, Kandi 502285, India.
| | - S Mandal
- Indian Institute of Science Education and Research, Pune 411008, India
| | - Arnab Sen
- Indian Institute of Science Education and Research, Pune 411008, India
| | - R Gopal
- Tata Institute of Fundamental Research, Hyderabad 500046, India
| | | | - S Turchini
- Istituto di Struttura della Materia - CNR (ISM-CNR), Area di Ricerca di Tor Vergata via del Fosso del Cavaliere, 100, Rome 00133, Italy
| | - D Catone
- Istituto di Struttura della Materia - CNR (ISM-CNR), Area di Ricerca di Tor Vergata via del Fosso del Cavaliere, 100, Rome 00133, Italy
| | - N Zema
- Istituto di Struttura della Materia - CNR (ISM-CNR), Area di Ricerca di Tor Vergata via del Fosso del Cavaliere, 100, Rome 00133, Italy
| | - M Coreno
- Elettra-Sincrotrone Trieste, Basovizza 34149, Italy.,Consiglio Nazionale delle Ricerche - Istituto di Struttura della Materia, Trieste 34149, Italy
| | - R Richter
- Elettra-Sincrotrone Trieste, Basovizza 34149, Italy
| | - M Mudrich
- Aarhus University, 8000 Aarhus C, Denmark.,QuCenDiEM - group and Department of Physics, Indian Institute of Technology - Madras, Chennai 600036, India.
| | - S R Krishnan
- QuCenDiEM - group and Department of Physics, Indian Institute of Technology - Madras, Chennai 600036, India.
| | - V Sharma
- Indian Institute of Technology Hyderabad, Kandi 502285, India.
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2
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Amini K, Boll R, Lauer A, Burt M, Lee JWL, Christensen L, Brauβe F, Mullins T, Savelyev E, Ablikim U, Berrah N, Bomme C, Düsterer S, Erk B, Höppner H, Johnsson P, Kierspel T, Krecinic F, Küpper J, Müller M, Müller E, Redlin H, Rouzée A, Schirmel N, Thøgersen J, Techert S, Toleikis S, Treusch R, Trippel S, Ulmer A, Wiese J, Vallance C, Rudenko A, Stapelfeldt H, Brouard M, Rolles D. Alignment, orientation, and Coulomb explosion of difluoroiodobenzene studied with the pixel imaging mass spectrometry (PImMS) camera. J Chem Phys 2017; 147:013933. [DOI: 10.1063/1.4982220] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Kasra Amini
- The Chemistry Research Laboratory, Department of Chemistry,
University of Oxford, Oxford OX1 3TA, United Kingdom
| | - Rebecca Boll
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - Alexandra Lauer
- 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
| | - Jason W. L. Lee
- The Chemistry Research Laboratory, Department of Chemistry,
University of Oxford, Oxford OX1 3TA, United Kingdom
| | | | - Felix Brauβe
- Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, 12489 Berlin, Germany
| | - Terence Mullins
- Center for Free-Electron Laser Science (CFEL),
Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg,
Germany
| | - Evgeny Savelyev
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - Utuq Ablikim
- J. R. Macdonald Laboratory, Department of Physics,
Kansas State University, Manhattan, Kansas 66506,
USA
| | - Nora Berrah
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
| | - Cédric Bomme
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - Stefan Düsterer
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - Benjamin Erk
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - Hauke Höppner
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
- Institut für Physik, Carl von Ossietzky Universität, 26111 Oldenburg, Germany
| | - Per Johnsson
- Department of Physics, Lund University, 22100 Lund, Sweden
| | - Thomas Kierspel
- Center for Free-Electron Laser Science (CFEL),
Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg,
Germany
- Center for Ultrafast Imaging, Universität Hamburg, 22761 Hamburg, Germany
| | - Faruk Krecinic
- Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, 12489 Berlin, Germany
| | - Jochen Küpper
- Center for Free-Electron Laser Science (CFEL),
Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg,
Germany
- Center for Ultrafast Imaging, Universität Hamburg, 22761 Hamburg, Germany
- Department of Physics, Universität Hamburg, 22761 Hamburg, Germany
| | - Maria Müller
- Institut für Optik und Atomare Physik,
Technische Universität Berlin, 10623 Berlin,
Germany
| | - Erland Müller
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - Harald Redlin
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - Arnaud Rouzée
- Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, 12489 Berlin, Germany
| | - Nora Schirmel
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - Jan Thøgersen
- Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark
| | - Simone Techert
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
- Max Planck Institute for Biophysical Chemistry, 33077 Göttingen, Germany
- Institute for X-ray Physics, Göttingen University, 33077 Göttingen, Germany
| | - Sven Toleikis
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - Rolf Treusch
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - Sebastian Trippel
- Center for Free-Electron Laser Science (CFEL),
Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg,
Germany
- Center for Ultrafast Imaging, Universität Hamburg, 22761 Hamburg, Germany
| | - Anatoli Ulmer
- Institut für Optik und Atomare Physik,
Technische Universität Berlin, 10623 Berlin,
Germany
| | - Joss Wiese
- Center for Free-Electron Laser Science (CFEL),
Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg,
Germany
| | - Claire Vallance
- The Chemistry Research Laboratory, Department of Chemistry,
University of Oxford, Oxford OX1 3TA, United Kingdom
| | - Artem Rudenko
- 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
| | - Daniel Rolles
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
- J. R. Macdonald Laboratory, Department of Physics,
Kansas State University, Manhattan, Kansas 66506,
USA
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3
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Ablikim U, Bomme C, Savelyev E, Xiong H, Kushawaha R, Boll R, Amini K, Osipov T, Kilcoyne D, Rudenko A, Berrah N, Rolles D. Isomer-dependent fragmentation dynamics of inner-shell photoionized difluoroiodobenzene. Phys Chem Chem Phys 2017; 19:13419-13431. [DOI: 10.1039/c7cp01379e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The fragmentation dynamics of 2,6- and 3,5-difluoroiodobenzene after iodine 4d inner-shell photoionization with soft X-rays are studied using coincident electron and ion momentum imaging.
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4
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Identification of absolute geometries of cis and trans molecular isomers by Coulomb Explosion Imaging. Sci Rep 2016; 6:38202. [PMID: 27910943 PMCID: PMC5133590 DOI: 10.1038/srep38202] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 11/04/2016] [Indexed: 01/13/2023] Open
Abstract
An experimental route to identify and separate geometric isomers by means of coincident Coulomb explosion imaging is presented, allowing isomer-resolved photoionization studies on isomerically mixed samples. We demonstrate the technique on cis/trans 1,2-dibromoethene (C2H2Br2). The momentum correlation between the bromine ions in a three-body fragmentation process induced by bromine 3d inner-shell photoionization is used to identify the cis and trans structures of the isomers. The experimentally determined momentum correlations and the isomer-resolved fragment-ion kinetic energies are matched closely by a classical Coulomb explosion model.
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5
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Kivimäki A, Stråhlman C, Wasowicz TJ, Kettunen JA, Richter R. Yields and Time-of-Flight Spectra of Neutral High-Rydberg Fragments at the K Edges of the CO2 Molecule. J Phys Chem A 2016; 120:4360-7. [PMID: 27276338 DOI: 10.1021/acs.jpca.6b04495] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have studied the production of neutral fragments in high-Rydberg (HR) states at the C 1s and O 1s edges of the CO2 molecule by performing two kinds of experiments. First, the yields of neutral HR fragments were measured indirectly by ionizing such fragments in a static electric field and by collecting resulting singly charged positive ions as a function of the photon energy. Such measurements reveal not only excitations below the core ionization thresholds but also thresholds for single core-hole and shakeup photoionization. Second, we obtained the mass spectra of neutral HR fragments at selected photon energies by exploiting pulsed field ionization; they show atomic fragments C(HR) and O(HR). We discuss dissociation pathways leading to the production of neutral HR fragments in core excitation and ionization of CO2.
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Affiliation(s)
- Antti Kivimäki
- CNR - Istituto Officina dei Materiali (IOM), Laboratorio TASC , 34149 Trieste, Italy
| | | | - Tomasz J Wasowicz
- Department of Physics of Electronic Phenomena, Gdansk University of Technology , ul. G. Narutowicza 11/12, 80-233 Gdansk, Poland
| | - J A Kettunen
- Department of Physics, University of Oulu , P.O. Box 3000, 90014 Oulu, Finland
| | - Robert Richter
- Elettra - Sincrotrone Trieste , Area Science Park Basovizza, 34149 Trieste, Italy
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6
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Eland JHD, Zagorodskikh S, Squibb RJ, Mucke M, Sorensen SL, Feifel R. Carbon dioxide ion dissociations after inner shell excitation and ionization: The origin of site-specific effects. J Chem Phys 2014; 140:184305. [DOI: 10.1063/1.4872218] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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7
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Saha K, Banerjee SB, Bapat B. Three body dissociation of CS2(2+) subsequent to various S(2p) Auger transitions. J Chem Phys 2013; 139:164309. [PMID: 24182031 DOI: 10.1063/1.4826468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Fragmentation kinematics of CS2 following various S(2p) Auger transitions is studied. Employing a combination of electron energy analysis and recoil ion momentum spectroscopy, changes in the dissociation channel yields, as well as the differences in the kinematical parameters for various bands of Auger hole states are presented. The fragmentation mechanism for dissociative channels leading to complete atomization of CS2(2+) molecular ion is studied in detail. We find that CS2(2+) does not retain linear geometry and is bent before undergoing concerted break-up. It is also observed that different geometric configurations of the CS2(2+) precursor result in different kinetic energy release values.
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Affiliation(s)
- K Saha
- Physical Research Laboratory, Navrangpura, Ahmedabad 380009, India
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8
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Erk B, Rolles D, Foucar L, Rudek B, Epp SW, Cryle M, Bostedt C, Schorb S, Bozek J, Rouzee A, Hundertmark A, Marchenko T, Simon M, Filsinger F, Christensen L, De S, Trippel S, Küpper J, Stapelfeldt H, Wada S, Ueda K, Swiggers M, Messerschmidt M, Schröter CD, Moshammer R, Schlichting I, Ullrich J, Rudenko A. Ultrafast charge rearrangement and nuclear dynamics upon inner-shell multiple ionization of small polyatomic molecules. PHYSICAL REVIEW LETTERS 2013; 110:053003. [PMID: 23414017 DOI: 10.1088/0953-4075/46/16/164031] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Indexed: 05/23/2023]
Abstract
Ionization and fragmentation of methylselenol (CH(3)SeH) molecules by intense (>10(17) W/cm(2)) 5 fs x-ray pulses (ħω=2 keV) are studied by coincident ion momentum spectroscopy. We contrast the measured charge state distribution with data on atomic Kr, determine kinetic energies of resulting ionic fragments, and compare them to the outcome of a Coulomb explosion model. We find signatures of ultrafast charge redistribution from the inner-shell ionized Se atom to its molecular partners, and observe significant displacement of the atomic constituents in the course of multiple ionization.
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Affiliation(s)
- B Erk
- Max Planck Advanced Study Group (ASG) at CFEL, 22761 Hamburg, Germany
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9
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Wu J, Kunitski M, Schmidt LPH, Jahnke T, Dörner R. Structures of N2Ar, O2Ar, and O2Xe dimers studied by Coulomb explosion imaging. J Chem Phys 2012; 137:104308. [DOI: 10.1063/1.4750980] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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10
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Laksman J, Månsson EP, Grunewald C, Sankari A, Gisselbrecht M, Céolin D, Sorensen SL. Role of the Renner-Teller effect after core hole excitation in the dissociation dynamics of carbon dioxide dication. J Chem Phys 2012; 136:104303. [DOI: 10.1063/1.3692293] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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11
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Rocha AB, de Moura CEV. The problem of hole localization in inner-shell states of N2 and CO2 revisited with complete active space self-consistent field approach. J Chem Phys 2011; 135:224112. [PMID: 22168685 DOI: 10.1063/1.3666016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Alexandre B Rocha
- Instituto de Química, Departamento de Físico-Química, Universidade Federal do Rio de Janeiro, Cidade Universitária, CT Bloco A. Rio de Janeiro, 21941-909 Rio de Janeiro, Brazil.
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12
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Eland JHD, Andric L, Linusson P, Hedin L, Plogmaker S, Palaudoux J, Penent F, Lablanquie P, Feifel R. Triple ionization of CO2 by valence and inner shell photoionization. J Chem Phys 2011; 135:134309. [DOI: 10.1063/1.3643121] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Ulrich B, Vredenborg A, Malakzadeh A, Schmidt LPH, Havermeier T, Meckel M, Cole K, Smolarski M, Chang Z, Jahnke T, Dörner R. Imaging of the Structure of the Argon and Neon Dimer, Trimer, and Tetramer. J Phys Chem A 2011; 115:6936-41. [DOI: 10.1021/jp1121245] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- B. Ulrich
- Institut für Kernphysik, Goethe Universität, Max-von-Laue-Strasse 1, 60486 Frankfurt, Germany
| | - A. Vredenborg
- Institut für Kernphysik, Goethe Universität, Max-von-Laue-Strasse 1, 60486 Frankfurt, Germany
| | - A. Malakzadeh
- Institut für Kernphysik, Goethe Universität, Max-von-Laue-Strasse 1, 60486 Frankfurt, Germany
| | - L. Ph. H. Schmidt
- Institut für Kernphysik, Goethe Universität, Max-von-Laue-Strasse 1, 60486 Frankfurt, Germany
| | - T. Havermeier
- Institut für Kernphysik, Goethe Universität, Max-von-Laue-Strasse 1, 60486 Frankfurt, Germany
| | - M. Meckel
- Institut für Kernphysik, Goethe Universität, Max-von-Laue-Strasse 1, 60486 Frankfurt, Germany
| | - K. Cole
- Institut für Kernphysik, Goethe Universität, Max-von-Laue-Strasse 1, 60486 Frankfurt, Germany
| | - M. Smolarski
- Department Physik, ETH Zürich, Wolfgang-Pauli-Strasse 16, 8093 Zürich, Switzerland
| | - Z. Chang
- Physics Department, Kansas State University, 116 Cardwell Hall, Manhattan, Kansas 66506, United States
| | - T. Jahnke
- Institut für Kernphysik, Goethe Universität, Max-von-Laue-Strasse 1, 60486 Frankfurt, Germany
| | - R. Dörner
- Institut für Kernphysik, Goethe Universität, Max-von-Laue-Strasse 1, 60486 Frankfurt, Germany
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14
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Laksman J, Céolin D, Gisselbrecht M, Sorensen SL. Nuclear motion in carbonyl sulfide induced by resonant core electron excitation. J Chem Phys 2010; 133:144314. [DOI: 10.1063/1.3502116] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Morishita Y, Liu XJ, Saito N, Lischke T, Kato M, Prümper G, Oura M, Yamaoka H, Tamenori Y, Suzuki IH, Ueda K. Experimental evidence of interatomic coulombic decay from the auger final states in argon dimers. PHYSICAL REVIEW LETTERS 2006; 96:243402. [PMID: 16907240 DOI: 10.1103/physrevlett.96.243402] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2006] [Indexed: 05/11/2023]
Abstract
Interatomic Coulombic decay (ICD) from an Auger-final dicationic state is observed in the Ar dimer. A 2p inner-shell vacancy created by photoionization is replaced with 3s and 3p vacancies via intra-atomic Auger decay. The Auger-final dicationic state is subject to ICD in which one of the 3p electrons in the same Ar atom fills the 3s vacancy while one of the 3p electrons from the neighboring Ar atom is emitted as an ICD electron. This ICD process is unambiguously identified by electron-ion-ion coincidence spectroscopy in which the kinetic energy of the ICD electron and the kinetic energy release between Ar+ and Ar2+ are measured in coincidence.
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Affiliation(s)
- Y Morishita
- National Institute of Advanced Industrial Science and Technology (AIST), NMIJ, Tsukuba 305-8568, Japan
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16
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Intra-molecular H2+ formation in the core-excited HCCH probed by multiple-ion coincidence momentum imaging. Chem Phys Lett 2004. [DOI: 10.1016/j.cplett.2004.06.049] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Machida M, Lavollée M, Randrianjafisoa J, Laurent G, Nagoshi M, Okada K, Koyano I, Saito N. Probe of bending motion following the 1s−1π* excitation of N2O. J Chem Phys 2004; 120:3635-41. [PMID: 15268525 DOI: 10.1063/1.1641783] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The doubly degenerate core-excited Pi state of N2O splits into two due to the static Renner-Teller effect. The lower state, A1, has a bent stable geometry and the molecule excited to this state starts to deform itself toward this bent geometry. To probe the effect of the potential energy surfaces of the core-excited A1 states on the nuclear motion, we measure the momenta of the three atomic ions in coincidence by means of the ion momentum imaging technique. We find that the potential energy surface affects the molecular deformation significantly. N2O in the terminal N 1s(-1)3piA1 excited state is observed to be bent more than that in the central N 1s(-1)3piA1 excited state. This means that N2O in the terminal N 1s(-1)3piA1 excited state bends faster than that in the central N 1s(-1)3piA1 excited state. When the excitation energy is decreased within the 1s(-1)3pi resonances, the nuclear motion in the A1 states becomes faster. This is interpreted by the notion that the excitation occurs onto the steeper slope part of the potential energy surface of the excited state for the lower excitation energy. The branching ratio of the A1 excitation increases with the decrease in the excitation energy.
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Affiliation(s)
- M Machida
- Department of Materials Science, Himeji Institute of Technology, Kamigori, Hyogo 678-1297, Japan
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18
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Ueda K, Kitajima M, De Fanis A, Furuta T, Shindo H, Tanaka H, Okada K, Feifel R, Sorensen SL, Yoshida H, Senba Y. Anisotropic ultrafast dissociation probed by the Doppler effect in resonant photoemission from CF4. PHYSICAL REVIEW LETTERS 2003; 90:233006. [PMID: 12857258 DOI: 10.1103/physrevlett.90.233006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2003] [Indexed: 05/24/2023]
Abstract
The resonant Auger spectrum from the decay of F 1s-excited CF4 is measured. Several lines exhibit a nondispersive kinetic energy as the exciting photon energy is tuned through the resonance region. The F 1s(-1) atomiclike Auger line is split into two components due to the emission of Auger electrons by a fragment in motion, when electron emission is observed along the polarization vector of the light. This Doppler splitting is direct evidence that the core excitation leads to T(d)-->C(3v) symmetry lowering, by elongation of a specific C-F bond preferentially aligned along the polarization vector of the incident photon.
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Affiliation(s)
- K Ueda
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.
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19
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Ueda K, De Fanis A, Saito N, Machida M, Kubozuka K, Chiba H, Muramatu Y, Sato Y, Czasch A, Jaguzki O, Dörner R, Cassimi A, Kitajima M, Furuta T, Tanaka H, Sorensen S, Okada K, Tanimoto S, Ikejiri K, Tamenori Y, Ohashi H, Koyano I. Nuclear motion and symmetry breaking of the B 1s-excited BF3 molecule. Chem Phys 2003. [DOI: 10.1016/s0301-0104(02)00903-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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