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Lamichhane BR, Arthanayaka T, Remolina J, Hasan A, Ciappina MF, Navarrete F, Barrachina RO, Lomsadze RA, Schulz M. Fully Differential Study of Capture with Vibrational Dissociation in p+H_{2} Collisions. PHYSICAL REVIEW LETTERS 2017; 119:083402. [PMID: 28952760 DOI: 10.1103/physrevlett.119.083402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Indexed: 06/07/2023]
Abstract
We have measured fully differential cross sections for electron capture in 75 keV p+H_{2} collisions with subsequent dissociation of the intermediate molecular H_{2}^{+} ion by vibrational excitation using different projectile coherence lengths. Data were obtained for two molecular orientations as a function of projectile scattering angle. Two types of interference, single- and molecular two-center interference, were identified. The two-center interference structure is phase shifted by π compared to what we expected. Furthermore, the presence of projectile coherence effects could be reconfirmed.
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Affiliation(s)
- B R Lamichhane
- Department of Physics and LAMOR, Missouri University of Science & Technology, Rolla, Missouri 65409, USA
| | - T Arthanayaka
- Department of Physics and LAMOR, Missouri University of Science & Technology, Rolla, Missouri 65409, USA
| | - J Remolina
- Department of Physics and LAMOR, Missouri University of Science & Technology, Rolla, Missouri 65409, USA
| | - A Hasan
- Department of Physics and LAMOR, Missouri University of Science & Technology, Rolla, Missouri 65409, USA
- Department of Physics, UAE University, P.O. Box 15551, Al Ain, Abu Dhabi, United Arab Emirates
| | - M F Ciappina
- Institute of Physics of the ASCR, ELI-Beamlines, Na Slovance 2, 182 21 Prague, Czech Republic
| | - F Navarrete
- Centro Atómico Bariloche and Instituto Balseiro (Comisión Nacional de Energía Atómica and Universidad. Nacional. de Cuyo), Bariloche, 8400 Río Negro, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), 2290 Caba, Argentina
| | - R O Barrachina
- Centro Atómico Bariloche and Instituto Balseiro (Comisión Nacional de Energía Atómica and Universidad. Nacional. de Cuyo), Bariloche, 8400 Río Negro, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), 2290 Caba, Argentina
| | - R A Lomsadze
- Department of Physics and LAMOR, Missouri University of Science & Technology, Rolla, Missouri 65409, USA
- Tbilisi State University, Tbilisi 0179, Georgia
| | - M Schulz
- Department of Physics and LAMOR, Missouri University of Science & Technology, Rolla, Missouri 65409, USA
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Senftleben A, Al-Hagan O, Pflüger T, Ren X, Madison D, Dorn A, Ullrich J. Fivefold differential cross sections for ground-state ionization of aligned H(2) by electron impact. J Chem Phys 2010; 133:044302. [PMID: 20687645 DOI: 10.1063/1.3457155] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We discuss the ionization of aligned hydrogen molecules into their ionic ground state by 200 eV electrons. Using a reaction microscope, the complete electron scattering kinematics is imaged over a large solid angle. Simultaneously, the molecular alignment is derived from postcollision dissociation of the residual ion. It is found that the ionization cross section is maximized for small angles between the internuclear axis and the momentum transfer. Fivefold differential cross sections (5DCSs) reveal subtle differences in the scattering process for the distinct alignments. We compare our observations with theoretical 5DCSs obtained with an adapted molecular three-body distorted wave model that reproduces most of the results, although discrepancies remain.
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Affiliation(s)
- Arne Senftleben
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany.
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Takahashi M. Looking at Molecular Orbitals in Three-Dimensional Form: From Dream to Reality. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2009. [DOI: 10.1246/bcsj.82.751] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Laurent G, Fernández J, Legendre S, Tarisien M, Adoui L, Cassimi A, Fléchard X, Frémont F, Gervais B, Giglio E, Grandin JP, Martín F. Kinematically complete study of dissociative ionization of by ion impact. PHYSICAL REVIEW LETTERS 2006; 96:173201. [PMID: 16712294 DOI: 10.1103/physrevlett.96.173201] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2005] [Indexed: 05/09/2023]
Abstract
We present a kinematically complete study of dissociative ionization of D(2) by 13.6 MeV/u S(15+) ions. The experiment allows us to unravel the competing mechanisms, namely, direct single ionization, autoionization of doubly excited states, ionization excitation, and double ionization, and to analyze the corresponding electron angular distribution from fixed-in-space molecules. The conclusions are supported by theoretical calculations in which the correlated motion of all electrons and nuclei and the interferences between them are described from first principles.
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Affiliation(s)
- G Laurent
- Centre Interdisciplinaire de Recherche Ions Lasers (CIRIL)-CEA-CNRS-ENSICaen, France
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Aoto T, Hikosaka Y, Hall R, Ito K, Fernández J, Martı́n F. Dissociative photoionization of H2 at high photon energies: uncovering new series of doubly excited states. Chem Phys Lett 2004. [DOI: 10.1016/j.cplett.2004.02.111] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Werner U, Beckord K, Becker J, Lutz HO. 3D imaging of the collision-induced Coulomb fragmentation of water molecules. PHYSICAL REVIEW LETTERS 1995; 74:1962-1965. [PMID: 10057807 DOI: 10.1103/physrevlett.74.1962] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Nagy L, Végh L. Electronic correlation in the ionization of molecular hydrogen. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1994; 50:3984-3991. [PMID: 9911370 DOI: 10.1103/physreva.50.3984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Corchs SE, Rivarola RD, McGuire JH, Wang YD. Distorted-wave models for single-electron capture from molecular targets by the impact of bare ions. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1993; 47:201-207. [PMID: 9908912 DOI: 10.1103/physreva.47.201] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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9
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Edwards AK, Wood RM, Mangan MA, Ezell RL. Collisional ionization and excitation of H2: Dependence on the orientation of the internuclear axis. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 46:6970-6976. [PMID: 9908031 DOI: 10.1103/physreva.46.6970] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Nagy L, Végh L. Ionization of molecular hydrogen by proton impact. II. Two-electron processes. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 46:290-295. [PMID: 9907862 DOI: 10.1103/physreva.46.290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Nagy L, Végh L. Ionization of molecular hydrogen by proton impact. I. Single ionization. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 46:284-289. [PMID: 9907861 DOI: 10.1103/physreva.46.284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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12
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Edwards AK, Wood RM, Ezell RL. Single and double ionization of H2 by He2+. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 42:1799-1802. [PMID: 9904218 DOI: 10.1103/physreva.42.1799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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