1
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Siddiki MAKA, Kumar K, Singh H, Mukherjee J, Tribedi LC, Misra D. Charge-symmetric and -asymmetric fragmentation dynamics of argon dimers in slow Ar8+-Ar2 collisions. J Chem Phys 2024; 160:224304. [PMID: 38856070 DOI: 10.1063/5.0209104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Accepted: 05/27/2024] [Indexed: 06/11/2024] Open
Abstract
We present an experimental study of multiple-electron capture-induced fragmentation dynamics of Ar2m+ (4 ≤m≤ 7) dimer ions in 4 keV/u Ar8+-Ar2 collisions. The fragment recoil ion pairs and the charge-changing projectiles are coincidentally measured using a double coincidence technique. The branching ratios between the different charge-sharing fragmentation channels show an inherent enhancement of the asymmetric channels. The kinetic energy release (KER) distributions for the associated electron capture process show a shift in the mean KER values toward the higher side with increasing capture stabilization. The interplay between the different projectile autoionization processes sheds light on the energy depositions to the system during collisions. The Coulomb potential energy curves give a physical insight into the role of the projectile final states in the dimer fragmentation dynamics. The dimer-axis orientation-dependent cross sections for the asymmetric fragmentation channels reveal a forward-backward asymmetry that arises from the geometry of the collision system. Our findings thus give insight into the impact parameter-controlled fragmentation dynamics of multiply charged Ar2m+ dimer ions in highly charged ion-dimer slow collisions.
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Affiliation(s)
- Md Abul Kalam Azad Siddiki
- Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Dr. Homi Bhabha Road, Colaba, Mumbai 400005, India
| | - Kamal Kumar
- Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Dr. Homi Bhabha Road, Colaba, Mumbai 400005, India
| | - Harpreet Singh
- Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Dr. Homi Bhabha Road, Colaba, Mumbai 400005, India
| | - Jibak Mukherjee
- Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Dr. Homi Bhabha Road, Colaba, Mumbai 400005, India
| | - Lokesh C Tribedi
- Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Dr. Homi Bhabha Road, Colaba, Mumbai 400005, India
| | - Deepankar Misra
- Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Dr. Homi Bhabha Road, Colaba, Mumbai 400005, India
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2
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Trinter F, Miteva T, Weller M, Hartung A, Richter M, Williams JB, Gatton A, Gaire B, Sartor J, Landers AL, Berry B, Ben-Itzhak I, Sisourat N, Stumpf V, Gokhberg K, Dörner R, Jahnke T, Weber T. Ultrafast temporal evolution of interatomic Coulombic decay in NeKr dimers. Chem Sci 2022; 13:1789-1800. [PMID: 35282626 PMCID: PMC8827086 DOI: 10.1039/d1sc04630f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Accepted: 12/28/2021] [Indexed: 11/21/2022] Open
Abstract
We investigate interatomic Coulombic decay in NeKr dimers after neon inner-valence photoionization [Ne+(2s-1)] using a synchrotron light source. We measure with high energy resolution the two singly charged ions of the Coulomb-exploding dimer dication and the photoelectron in coincidence. By carefully tracing the post-collision interaction between the photoelectron and the emitted ICD electron we are able to probe the temporal evolution of the state as it decays. Although the ionizing light pulses are 80 picoseconds long, we determine the lifetime of the intermediate dimer cation state and visualize the contraction of the nuclear structure on the femtosecond time scale.
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Affiliation(s)
- F Trinter
- Institut für Kernphysik, Goethe-Universität 60438 Frankfurt am Main Germany .,Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft 14195 Berlin Germany
| | - T Miteva
- Laboratoire de Chimie Physique Matière et Rayonnement, UMR 7614, Sorbonne Université, CNRS 75005 Paris France
| | - M Weller
- Institut für Kernphysik, Goethe-Universität 60438 Frankfurt am Main Germany .,Lawrence Berkeley National Laboratory, Chemical Sciences Division Berkeley California 94720 USA
| | - A Hartung
- Institut für Kernphysik, Goethe-Universität 60438 Frankfurt am Main Germany
| | - M Richter
- Institut für Kernphysik, Goethe-Universität 60438 Frankfurt am Main Germany
| | - J B Williams
- Department of Physics, University of Nevada Reno Nevada 89557 USA
| | - A Gatton
- Lawrence Berkeley National Laboratory, Chemical Sciences Division Berkeley California 94720 USA .,Department of Physics, Auburn University Auburn Alabama 36849 USA
| | - B Gaire
- Lawrence Berkeley National Laboratory, Chemical Sciences Division Berkeley California 94720 USA
| | - J Sartor
- Department of Physics, Auburn University Auburn Alabama 36849 USA
| | - A L Landers
- Department of Physics, Auburn University Auburn Alabama 36849 USA
| | - B Berry
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University Manhattan Kansas 66506 USA
| | - I Ben-Itzhak
- J. R. Macdonald Laboratory, Department of Physics, Kansas State University Manhattan Kansas 66506 USA
| | - N Sisourat
- Laboratoire de Chimie Physique Matière et Rayonnement, UMR 7614, Sorbonne Université, CNRS 75005 Paris France
| | - V Stumpf
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg 69120 Heidelberg Germany
| | - K Gokhberg
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg 69120 Heidelberg Germany
| | - R Dörner
- Institut für Kernphysik, Goethe-Universität 60438 Frankfurt am Main Germany
| | - T Jahnke
- European XFEL GmbH 22869 Schenefeld Germany
| | - T Weber
- Lawrence Berkeley National Laboratory, Chemical Sciences Division Berkeley California 94720 USA
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3
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Najjari B, Wang Z, Voitkiv AB. Probing the Helium Dimer by Relativistic Highly Charged Projectiles. PHYSICAL REVIEW LETTERS 2021; 127:203401. [PMID: 34860041 DOI: 10.1103/physrevlett.127.203401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 09/27/2021] [Indexed: 06/13/2023]
Abstract
We study the fragmentation of He_{2} dimers into He^{+} ions by relativistic highly charged projectiles. We demonstrate that the interaction between an ultrafast projectile with an extremely extended object-the helium dimer-possesses interesting features that are absent in collisions with "normal" molecules. We also show that such projectiles, due to their enormous interaction range, can accurately probe the ground state of the dimer and even be used for a determination of its binding energy.
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Affiliation(s)
- B Najjari
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Z Wang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Institute for Theoretical Physics I, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - A B Voitkiv
- Institute for Theoretical Physics I, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
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4
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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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5
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Zhu X, Hu X, Yan S, Peng Y, Feng W, Guo D, Gao Y, Zhang S, Cassimi A, Xu J, Zhao D, Dong D, Hai B, Wu Y, Wang J, Ma X. Heavy N + ion transfer in doubly charged N 2Ar van der Waals cluster. Nat Commun 2020; 11:2987. [PMID: 32533002 PMCID: PMC7293282 DOI: 10.1038/s41467-020-16749-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 05/20/2020] [Indexed: 11/30/2022] Open
Abstract
Van der Waals clusters are weakly bound atomic/molecular systems and are an important medium for understanding micro-environmental chemical phenomena in bio-systems. The presence of neighboring atoms may open channels otherwise forbidden in isolated atoms/molecules. In hydrogen-bond clusters, proton transfer plays a crucial role, which involves mass and charge migration over large distances within the cluster and results in its fragmentation. Here we report an exotic transfer channel involving a heavy N+ ion observed in a doubly charged cluster produced by 1 MeV Ne8+ ions: (N2Ar)2+→N++NAr+. The neighboring Ar atom decreases the \documentclass[12pt]{minimal}
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\begin{document}$${\mathrm{N}}_2^{2 + }$$\end{document}N22+ barrier height and width, resulting in significant shorter lifetimes of the metastable molecular ion state \documentclass[12pt]{minimal}
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\begin{document}$${\mathrm{N}}_2^{2 + }$$\end{document}N22+(\documentclass[12pt]{minimal}
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\begin{document}$${{\mathrm{X}}^{1}}{\Sigma _{{\mathrm{g}}}^{+}}$$\end{document}X1Σg+). Consequently, the breakup of the covalent N+−N+ bond, the tunneling out of the N+ ion from the \documentclass[12pt]{minimal}
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\begin{document}$${\mathrm{N}}_2^{2 + }$$\end{document}N22+ potential well, as well as the formation of an N−Ar+ bound system take place almost simultaneously, resulting in a Coulomb explosion of N+ and NAr+ ion pairs. There are multiple ways by which energy and charge transfer occur in weakly bound systems. Here the authors reveal a heavy ion N+ transfer in a doubly charged Van der Waals cluster produced in collisions of the highly charged Ne8+ ion with N2Ar, leading to fragmentation of N+ and NAr+ via Coulomb explosion.
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Affiliation(s)
- XiaoLong Zhu
- Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - XiaoQing Hu
- Institute of Applied Physics and Computational Mathematics, 100088, Beijing, China
| | - ShunCheng Yan
- Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - YiGeng Peng
- Institute of Applied Physics and Computational Mathematics, 100088, Beijing, China
| | - WenTian Feng
- Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China
| | - DaLong Guo
- Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Yong Gao
- Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China
| | - ShaoFeng Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Amine Cassimi
- CIMAP, CEA/CNRS/ENSICAEN/UNICAEN, BP5133, 14070, Caen, France
| | - JiaWei Xu
- Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - DongMei Zhao
- Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China
| | - DaPu Dong
- Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Bang Hai
- Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Yong Wu
- Institute of Applied Physics and Computational Mathematics, 100088, Beijing, China. .,HEDPS, Center of Applied Physics and Technology, Peking University, 100871, Beijing, China.
| | - JianGuo Wang
- Institute of Applied Physics and Computational Mathematics, 100088, Beijing, China
| | - X Ma
- Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China. .,University of Chinese Academy of Sciences, 100049, Beijing, China.
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6
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Schwestka J, Niggas A, Creutzburg S, Kozubek R, Heller R, Schleberger M, Wilhelm RA, Aumayr F. Charge-Exchange-Driven Low-Energy Electron Splash Induced by Heavy Ion Impact on Condensed Matter. J Phys Chem Lett 2019; 10:4805-4811. [PMID: 31382749 DOI: 10.1021/acs.jpclett.9b01774] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Low-energy electrons (LEEs) are of great relevance for ion-induced radiation damage in cells and genes. We show that charge exchange of ions leads to LEE emission upon impact on condensed matter. By using a graphene monolayer as a simple model system for condensed organic matter and utilizing slow highly charged ions (HCIs) as projectiles, we highlight the importance of charge exchange alone for LEE emission. We find a large number of ejected electrons resulting from individual ion impacts (up to 80 electrons/ion for Xe40+). More than 90% of emitted electrons have energies well below 15 eV. This "splash" of low-energy electrons is interpreted as the consequence of ion deexcitation via an interatomic Coulombic decay (ICD) process.
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Affiliation(s)
| | - Anna Niggas
- Institute of Applied Physics, TU Wien, 1040 Vienna, Austria
| | - Sascha Creutzburg
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Roland Kozubek
- Faculty of Physics and CENIDE, University Duisburg-Essen, 47057 Duisburg, Germany
| | - René Heller
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Marika Schleberger
- Faculty of Physics and CENIDE, University Duisburg-Essen, 47057 Duisburg, Germany
| | - Richard A Wilhelm
- Institute of Applied Physics, TU Wien, 1040 Vienna, Austria
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
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7
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Molle A, Berikaa ER, Pont FM, Bande A. Quantum size effect affecting environment assisted electron capture in quantum confinements. J Chem Phys 2019; 150:224105. [PMID: 31202229 DOI: 10.1063/1.5095999] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Ultrafast inter-Coulombic electron capture (ICEC) has been established as an important energy-transfer process in open paired-quantum-dot systems which can mediate between entrapment of free-moving electrons and release of trapped ones elsewhere by long-range electron-electron interaction within nanowires. Previous studies indicated ICEC enhancement through population and secondary decay of two-center resonance states, the latter known as inter-Coulombic decay (ICD). This study investigates the quantum-size effect of single- and double-electron states in an established model of a quasi-one-dimensional nanowire with two embedded confinement sites, represented by a pair of Gaussian wells. We analyze the ICEC related electron flux density as a function of confinement size and are able to clearly identify two distinct capture channels: a direct long-range electron-electron impulse and a conversion of kinetic energy to electron-electron correlation energy with consecutive ICD. The overlay of both channels makes ICEC extremely likely, while nanowires are a strong candidate for the next miniaturization step of integrated-circuit components.
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Affiliation(s)
- Axel Molle
- Department of Locally Sensitive and Time-Resolved Spectroscopy, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Essam R Berikaa
- Department of Locally Sensitive and Time-Resolved Spectroscopy, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Federico M Pont
- Facultad de Matemática, Astronomía, Física y Computación, Universidad Nacional de Córdoba, and IFEG-CONICET, Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Annika Bande
- Department of Locally Sensitive and Time-Resolved Spectroscopy, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
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8
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Xu S, Guo D, Ma X, Zhu X, Feng W, Yan S, Zhao D, Gao Y, Zhang S, Ren X, Zhao Y, Xu Z, Dorn A, Cederbaum LS, Kryzhevoi NV. Damaging Intermolecular Energy and Proton Transfer Processes in Alpha-Particle-Irradiated Hydrogen-Bonded Systems. Angew Chem Int Ed Engl 2018; 57:17023-17027. [PMID: 30417968 DOI: 10.1002/anie.201808898] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 10/12/2018] [Indexed: 11/11/2022]
Abstract
Although the biological hazard of alpha-particle radiation is well-recognized, the molecular mechanisms of biodamage are still far from being understood. Irreparable lesions in biomolecules may not only have mechanical origin but also appear due to various electronic and nuclear relaxation processes of ionized states produced by an alpha-particle impact. Two such processes were identified in the present study by considering an acetylene dimer, a biologically relevant system possessing an intermolecular hydrogen bond. The first process is the already well-established intermolecular Coulombic decay of inner-valence-ionized states. The other is a novel relaxation mechanism of dicationic states involving intermolecular proton transfer. Both processes are very fast and trigger Coulomb explosion of the dimer due to creation of charge-separated states. These processes are general and predicted to occur also in alpha-particle-irradiated nucleobase pairs in DNA molecules.
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Affiliation(s)
- Shenyue Xu
- Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou, 730000, China.,School of Science, Xi'an Jiaotong University, Xianning West Road 28, Xi'an, 710049, China
| | - Dalong Guo
- Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou, 730000, China
| | - Xinwen Ma
- Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou, 730000, China
| | - Xiaolong Zhu
- Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou, 730000, China
| | - Wentian Feng
- Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou, 730000, China
| | - Shuncheng Yan
- Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou, 730000, China
| | - Dongmei Zhao
- Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou, 730000, China
| | - Yong Gao
- Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou, 730000, China
| | - Shaofeng Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou, 730000, China
| | - Xueguang Ren
- School of Science, Xi'an Jiaotong University, Xianning West Road 28, Xi'an, 710049, China.,Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117, Heidelberg, Germany
| | - Yongtao Zhao
- School of Science, Xi'an Jiaotong University, Xianning West Road 28, Xi'an, 710049, China
| | - Zhongfeng Xu
- School of Science, Xi'an Jiaotong University, Xianning West Road 28, Xi'an, 710049, China
| | - Alexander Dorn
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117, Heidelberg, Germany
| | - Lorenz S Cederbaum
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, 69120, Heidelberg, Germany
| | - Nikolai V Kryzhevoi
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, 69120, Heidelberg, Germany
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9
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Xu S, Guo D, Ma X, Zhu X, Feng W, Yan S, Zhao D, Gao Y, Zhang S, Ren X, Zhao Y, Xu Z, Dorn A, Cederbaum LS, Kryzhevoi NV. Damaging Intermolecular Energy and Proton Transfer Processes in Alpha‐Particle‐Irradiated Hydrogen‐Bonded Systems. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808898] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shenyue Xu
- Institute of Modern Physics Chinese Academy of Sciences Nanchang Road 509 Lanzhou 730000 China
- School of Science Xi'an Jiaotong University Xianning West Road 28 Xi'an 710049 China
| | - Dalong Guo
- Institute of Modern Physics Chinese Academy of Sciences Nanchang Road 509 Lanzhou 730000 China
| | - Xinwen Ma
- Institute of Modern Physics Chinese Academy of Sciences Nanchang Road 509 Lanzhou 730000 China
| | - Xiaolong Zhu
- Institute of Modern Physics Chinese Academy of Sciences Nanchang Road 509 Lanzhou 730000 China
| | - Wentian Feng
- Institute of Modern Physics Chinese Academy of Sciences Nanchang Road 509 Lanzhou 730000 China
| | - Shuncheng Yan
- Institute of Modern Physics Chinese Academy of Sciences Nanchang Road 509 Lanzhou 730000 China
| | - Dongmei Zhao
- Institute of Modern Physics Chinese Academy of Sciences Nanchang Road 509 Lanzhou 730000 China
| | - Yong Gao
- Institute of Modern Physics Chinese Academy of Sciences Nanchang Road 509 Lanzhou 730000 China
| | - Shaofeng Zhang
- Institute of Modern Physics Chinese Academy of Sciences Nanchang Road 509 Lanzhou 730000 China
| | - Xueguang Ren
- School of Science Xi'an Jiaotong University Xianning West Road 28 Xi'an 710049 China
- Max-Planck-Institut für Kernphysik Saupfercheckweg 1 69117 Heidelberg Germany
| | - Yongtao Zhao
- School of Science Xi'an Jiaotong University Xianning West Road 28 Xi'an 710049 China
| | - Zhongfeng Xu
- School of Science Xi'an Jiaotong University Xianning West Road 28 Xi'an 710049 China
| | - Alexander Dorn
- Max-Planck-Institut für Kernphysik Saupfercheckweg 1 69117 Heidelberg Germany
| | - Lorenz S. Cederbaum
- Theoretische Chemie Physikalisch-Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 229 69120 Heidelberg Germany
| | - Nikolai V. Kryzhevoi
- Theoretische Chemie Physikalisch-Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 229 69120 Heidelberg Germany
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10
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11
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A comprehensive study of Interatomic Coulombic Decay in argon dimers: Extracting R-dependent absolute decay rates from the experiment. Chem Phys 2017. [DOI: 10.1016/j.chemphys.2016.09.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Iskandar W, Matsumoto J, Leredde A, Fléchard X, Gervais B, Guillous S, Hennecart D, Méry A, Rangama J, Zhou CL, Shiromaru H, Cassimi A. Interatomic Coulombic decay as a new source of low energy electrons in slow ion-dimer collisions. PHYSICAL REVIEW LETTERS 2015; 114:033201. [PMID: 25658997 DOI: 10.1103/physrevlett.114.033201] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Indexed: 06/04/2023]
Abstract
We provide the experimental evidence that the single electron capture process in slow collisions between O^{3+} ions and neon dimer targets leads to an unexpected production of low-energy electrons. This production results from the interatomic Coulombic decay process, subsequent to inner-shell single electron capture from one site of the neon dimer. Although pure one-electron capture from the inner shell is expected to be negligible in the low collision energy regime investigated here, the electron production due to this process overtakes by 1 order of magnitude the emission of Auger electrons by the scattered projectiles after double-electron capture. This feature is specific to low charge states of the projectile: similar studies with Xe^{20+} and Ar^{9+} projectiles show no evidence of inner-shell single-electron capture. The dependence of the process on the projectile charge state is interpreted using simple calculations based on the classical over the barrier model.
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Affiliation(s)
- W Iskandar
- CIMAP, CEA-CNRS-ENSICAEN, BP 5133, F-14070 Caen cedex 5, France
| | - J Matsumoto
- Department of Chemistry, Tokyo Metropolitan University, 1-1 Minamiosawa, Hachiouji-shi, Tokyo 192-0397, Japan
| | - A Leredde
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - X Fléchard
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14050 Caen Cedex 04, France
| | - B Gervais
- CIMAP, CEA-CNRS-ENSICAEN, BP 5133, F-14070 Caen cedex 5, France
| | - S Guillous
- CIMAP, CEA-CNRS-ENSICAEN, BP 5133, F-14070 Caen cedex 5, France
| | - D Hennecart
- CIMAP, CEA-CNRS-ENSICAEN, BP 5133, F-14070 Caen cedex 5, France
| | - A Méry
- CIMAP, CEA-CNRS-ENSICAEN, BP 5133, F-14070 Caen cedex 5, France
| | - J Rangama
- CIMAP, CEA-CNRS-ENSICAEN, BP 5133, F-14070 Caen cedex 5, France
| | - C L Zhou
- CIMAP, CEA-CNRS-ENSICAEN, BP 5133, F-14070 Caen cedex 5, France
| | - H Shiromaru
- Department of Chemistry, Tokyo Metropolitan University, 1-1 Minamiosawa, Hachiouji-shi, Tokyo 192-0397, Japan
| | - A Cassimi
- CIMAP, CEA-CNRS-ENSICAEN, BP 5133, F-14070 Caen cedex 5, France
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13
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Iskandar W, Matsumoto J, Leredde A, Fléchard X, Gervais B, Guillous S, Hennecart D, Méry A, Rangama J, Zhou CL, Shiromaru H, Cassimi A. Atomic site-sensitive processes in low energy ion-dimer collisions. PHYSICAL REVIEW LETTERS 2014; 113:143201. [PMID: 25325640 DOI: 10.1103/physrevlett.113.143201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Indexed: 06/04/2023]
Abstract
Electron capture processes for low energy Ar(9+) ions colliding with Ar(2) dimer targets are investigated, focusing attention on charge sharing between the two Ar atoms as a function of the molecular orientation and the impact parameter. A preference for charge-asymmetric dissociation channels is observed, with a strong correlation between the projectile scattering angle and the molecular ion orientation. The measurements here provide clear evidence that projectiles distinguish each atom in the target and that electron capture from near-site atoms is favored. Monte Carlo calculations based on the classical over-the-barrier model, with dimer targets represented as two independent atoms, are compared to the data. They give new insight into the dynamics of the collision by providing, for the different electron capture channels, the two-dimensional probability maps p(b), where b is the impact parameter vector in the molecular frame.
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Affiliation(s)
- W Iskandar
- CIMAP, CEA-CNRS-ENSICAEN, BP 5133, F-14070 Caen Cedex 5, France
| | - J Matsumoto
- Department of Chemistry, Tokyo Metropolitan University, 1-1 Minamiosawa, Hachiouji-shi, Tokyo 192-0397, Japan
| | - A Leredde
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - X Fléchard
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14050 Caen Cedex 04, France
| | - B Gervais
- CIMAP, CEA-CNRS-ENSICAEN, BP 5133, F-14070 Caen Cedex 5, France
| | - S Guillous
- CIMAP, CEA-CNRS-ENSICAEN, BP 5133, F-14070 Caen Cedex 5, France
| | - D Hennecart
- CIMAP, CEA-CNRS-ENSICAEN, BP 5133, F-14070 Caen Cedex 5, France
| | - A Méry
- CIMAP, CEA-CNRS-ENSICAEN, BP 5133, F-14070 Caen Cedex 5, France
| | - J Rangama
- CIMAP, CEA-CNRS-ENSICAEN, BP 5133, F-14070 Caen Cedex 5, France
| | - C L Zhou
- CIMAP, CEA-CNRS-ENSICAEN, BP 5133, F-14070 Caen Cedex 5, France
| | - H Shiromaru
- Department of Chemistry, Tokyo Metropolitan University, 1-1 Minamiosawa, Hachiouji-shi, Tokyo 192-0397, Japan
| | - A Cassimi
- CIMAP, CEA-CNRS-ENSICAEN, BP 5133, F-14070 Caen Cedex 5, France
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14
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Jabbari G, Klaiman S, Chiang YC, Trinter F, Jahnke T, Gokhberg K. Ab initio calculation of ICD widths in photoexcited HeNe. J Chem Phys 2014; 140:224305. [PMID: 24929386 DOI: 10.1063/1.4881598] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- G. Jabbari
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
| | - S. Klaiman
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
| | - Y.-C. Chiang
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
| | - F. Trinter
- Institut für Kernphysik, Goethe-Universität Frankfurt, Max-von-Laue-Str. 1, D-60438 Frankfurt, Germany
| | - T. Jahnke
- Institut für Kernphysik, Goethe-Universität Frankfurt, Max-von-Laue-Str. 1, D-60438 Frankfurt, Germany
| | - K. Gokhberg
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
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15
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Hergenhahn U. Production of low kinetic energy electrons and energetic ion pairs by Intermolecular Coulombic Decay. Int J Radiat Biol 2012; 88:871-83. [DOI: 10.3109/09553002.2012.698031] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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16
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Enhanced production of low energy electrons by alpha particle impact. Proc Natl Acad Sci U S A 2011; 108:11821-4. [PMID: 21730184 DOI: 10.1073/pnas.1104382108] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Radiation damage to living tissue stems not only from primary ionizing particles but to a substantial fraction from the dissociative attachment of secondary electrons with energies below the ionization threshold. We show that the emission yield of those low energy electrons increases dramatically in ion-atom collisions depending on whether or not the target atoms are isolated or embedded in an environment. Only when the atom that has been ionized and excited by the primary particle impact is in immediate proximity of another atom is a fragmentation route known as interatomic Coulombic decay (ICD) enabled. This leads to the emission of a low energy electron. Over the past decade ICD was explored in several experiments following photoionization. Most recent results show its observation even in water clusters. Here we show the quantitative role of ICD for the production of low energy electrons by ion impact, thus approaching a scenario closer to that of radiation damage by alpha particles: We choose ion energies on the maximum of the Bragg peak where energy is most efficiently deposited in tissue. We compare the electron production after colliding He(+) ions on isolated Ne atoms and on Ne dimers (Ne(2)). In the latter case the Ne atom impacted is surrounded by a most simple environment already opening ICD as a deexcitation channel. As a consequence, we find a dramatically enhanced low energy electron yield. The results suggest that ICD may have a significant influence on cell survival after exposure to ionizing radiation.
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