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Impact of Charge Migration and the Angle-Resolved Photoionization Time Delays of the Free and Confined Atom X@C60. ATOMS 2022. [DOI: 10.3390/atoms10020044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
The present study is devoted to isolate and study the effect of charge migration on the photoionization from the X@C60. The noble gas atoms, Ar, Kr, and Xe, are confined in the C60 to investigate the impact of charge migration from the entrapped atom to the C60 side. The present work concludes that the confinement oscillations in the photoionization features are amplified due to the charge migration. Further, the angle-resolved, spin average time delay is also investigated in the light of confinement. Features in the time delay due to the charge migration are more amplified relative to those in the cross-section or angular distribution.
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Obaid R, Xiong H, Augustin S, Schnorr K, Ablikim U, Battistoni A, Wolf TJA, Bilodeau RC, Osipov T, Gokhberg K, Rolles D, LaForge AC, Berrah N. Intermolecular Coulombic Decay in Endohedral Fullerene at the 4d→4f Resonance. PHYSICAL REVIEW LETTERS 2020; 124:113002. [PMID: 32242685 DOI: 10.1103/physrevlett.124.113002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 02/08/2020] [Indexed: 06/11/2023]
Abstract
Intermolecular processes offer unique decay mechanisms for complex systems to internally relax. Here, we report the observation of an intermolecular Coulombic decay channel in an endohedral fullerene, a holmium nitride complex (Ho_{3}N) embedded within a C_{80} fullerene, between neighboring holmium ions, and between the holmium complex and the carbon cage. By measuring the ions and the electrons in coincidence after XUV photoabsorption, we can isolate the different decay channels, which are found to be more prevalent relative to intra-atomic Auger decay.
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Affiliation(s)
- Razib Obaid
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
| | - Hui Xiong
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
| | - Sven Augustin
- Max-Planck-Institut für Kernphysik, Heidelberg 69117, Germany
- J. R. Macdonald Laboratory, Physics Department, Kansas State University, Manhattan, Kansas 66506, USA
| | - Kirsten Schnorr
- Max-Planck-Institut für Kernphysik, Heidelberg 69117, Germany
| | - Utuq Ablikim
- J. R. Macdonald Laboratory, Physics Department, Kansas State University, Manhattan, Kansas 66506, USA
| | - Andrea Battistoni
- PULSE Institute, SLAC National Accelerator Laboratory, 2575, Sand Hill Road, Menlo Park, California 94025, USA
| | - Thomas J A Wolf
- PULSE Institute, SLAC National Accelerator Laboratory, 2575, Sand Hill Road, Menlo Park, California 94025, USA
| | - René C Bilodeau
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
| | - Timur Osipov
- LCLS, SLAC National Accelerator Laboratory, 2575, Sand Hill Road, Menlo Park, California 94025, USA
| | - Kirill Gokhberg
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Heidelberg 69120, Germany
| | - Daniel Rolles
- J. R. Macdonald Laboratory, Physics Department, Kansas State University, Manhattan, Kansas 66506, USA
| | - Aaron C LaForge
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
| | - Nora Berrah
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
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Etindele A, Maezono R, Melingui Melono R, Motapon O. Influence of endohedral confinement of atoms on structural and dynamical properties of the C60 fullerene. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.07.074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Otero JA, Monsivais G, Morales A, Gutiérrez L, Díaz-de-Anda A, Flores J. Further understanding of doorway states in elastic systems. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2017; 142:646. [PMID: 28863612 DOI: 10.1121/1.4996500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In a previous work an elastic bar with a groove or notch that presents a doorway state was studied when the system was excited with 20 cycles of harmonic signals. The strength function had a Lorentzian width Γd = 1/πτd, where τd is the decay time of the prompt response. In the present paper, the doorway-state phenomenon is analyzed again for the same harmonic signals but for a very large number of cycles. The strength-function phenomenon is once more obtained, but now with a Lorentzian width Γ' which is larger than Γd. A qualitative and numerical explanation of this fact is given, leading therefore to further understanding of doorway states in elastic systems. The numerical results show a very good agreement with the values measured in the laboratory.
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Affiliation(s)
- J A Otero
- Tecnológico de Monterrey, Campus Estado de México, Atizapán de Zaragoza, 52926 Estado de México, Mexico
| | - G Monsivais
- Instituto de Física, Universidad Nacional Autónoma de México, P.O. Box 20-364, 01000 Ciudad de México, Mexico
| | - A Morales
- Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, P.O. Box 48-3, 62251 Cuernavaca, Morelos, Mexico
| | - L Gutiérrez
- Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, P.O. Box 48-3, 62251 Cuernavaca, Morelos, Mexico
| | - A Díaz-de-Anda
- Instituto de Física, Benemérita Universidad Autónoma de Puebla, P.O. Box J-48, 72570 Puebla, Puebla, Mexico
| | - J Flores
- Instituto de Física, Universidad Nacional Autónoma de México, P.O. Box 20-364, 01000 Ciudad de México, Mexico
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Vilà A, González M, Mayol R. Quantum interferences in the photodissociation of Cl2(B) in superfluid helium nanodroplets (4He)N. Phys Chem Chem Phys 2015; 17:32241-50. [DOI: 10.1039/c5cp03575a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The origin of quantum interferences theoretically found in the photodissociation of chlorine in superfluid 4He nanodroplets was investigated in detail.
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Affiliation(s)
- Arnau Vilà
- Departament de Química Física i IQTC
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - Miguel González
- Departament de Química Física i IQTC
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - Ricardo Mayol
- Departament d’Estructura i Constituents de la Matèria
- Universitat de Barcelona
- 08028 Barcelona
- Spain
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Giuliani A, Milosavljević AR, Canon F, Nahon L. Contribution of synchrotron radiation to photoactivation studies of biomolecular ions in the gas phase. MASS SPECTROMETRY REVIEWS 2014; 33:424-441. [PMID: 24375654 DOI: 10.1002/mas.21398] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Photon activation of ions in the visible and ultraviolet range attracts a growing interest, partly for its promising applications in tandem mass spectrometry. However, this task is not trivial, as it requires notably high brilliance photon sources. Hence, most of the work in that field has been performed using lasers. Synchrotron radiation is a source continuously tunable over a wide photon energy range and which possesses the necessary characteristics for ion activation. This review focuses on the array of applications of synchrotron radiation in photon activation of ions ranging from near UV to soft X-rays.
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Affiliation(s)
- Alexandre Giuliani
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin, 91192, Gif-sur-Yvette, France; UAR1008 CEPIA, INRA, 44316, Nantes, France
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Pazourek R, Nagele S, Burgdörfer J. Time-resolved photoemission on the attosecond scale: opportunities and challenges. Faraday Discuss 2013; 163:353-76; discussion 393-432. [PMID: 24020211 DOI: 10.1039/c3fd00004d] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The interaction of laser pulses of sub-femtosecond duration with matter opened up the opportunity to explore electronic processes on their natural time scale. One central conceptual question posed by the observation of photoemission in real time is whether the ejection of the photoelectron wavepacket occurs instantaneously, or whether the response time to photoabsorption is finite leading to a time delay in photoemission. Recent experimental progress exploring attosecond streaking and RABBIT techniques find relative time delays between the photoemission from different atomic substates to be of the order of -20 attoseconds. We present ab initio simulations for both one- and two-electron systems which allow the determination of both absolute and relative time delays with -1 attosecond precision. We show that the intrinsic time shift of the photoionization process encoded in the Eisenbud-Wigner-Smith delay time can be unambiguously disentangled from measurement-induced time delays in a pump-probe setting when the photoionized electronic wavepacket is probed by a modestly strong infrared streaking field. We identify distinct contributions due to initial-state polarization, Coulomb-laser coupling in the final continuum state as well as final-state interaction with the entangled residual ionic state. Extensions to multi-electron systems and to the extraction of time information in the presence of decohering processes are discussed.
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Affiliation(s)
- Renate Pazourek
- Institute for Theoretical Physics, Vienna University of Technology, 1040 Vienna, Austria.
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