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Title: Antiproton-impact ionization of H 2

Abstract

Ionization processes in antiproton collisions with H2 are studied by direct solution of the time-dependent Schrödinger equation. A time-dependent close-coupling method based on an expansion of a one-electron 3D wavefunction in the field of H+2 is used to calculate single-ionization cross sections at incident energies ranging from 50 keV to 1.5 MeV. Averaging over the molecular orientations, the single-ionization cross sections are in reasonable agreement with time-dependent basis set calculations and experiment. A time-dependent close-coupling method based on an expansion of a two-electron 6D wavefunction in the field of H2 +2 is used to calculate single- and double-ionization cross sections at an incident energy of 100 keV. Initiatory 6D results for the H+2 production cross section range are somewhat lower than experiment, while the H+ production cross section range brackets experiment.

Authors:
; ;
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1564779
Resource Type:
Journal Article
Journal Name:
Journal of Physics. B, Atomic, Molecular and Optical Physics
Additional Journal Information:
Journal Volume: 43; Journal Issue: 23; Journal ID: ISSN 0953-4075
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
Optics; Physics

Citation Formats

Pindzola, M. S., Lee, Teck-Ghee, and Colgan, J. Antiproton-impact ionization of H 2. United States: N. p., 2010. Web. doi:10.1088/0953-4075/43/23/235201.
Pindzola, M. S., Lee, Teck-Ghee, & Colgan, J. Antiproton-impact ionization of H 2. United States. doi:10.1088/0953-4075/43/23/235201.
Pindzola, M. S., Lee, Teck-Ghee, and Colgan, J. Fri . "Antiproton-impact ionization of H 2". United States. doi:10.1088/0953-4075/43/23/235201.
@article{osti_1564779,
title = {Antiproton-impact ionization of H 2},
author = {Pindzola, M. S. and Lee, Teck-Ghee and Colgan, J.},
abstractNote = {Ionization processes in antiproton collisions with H2 are studied by direct solution of the time-dependent Schrödinger equation. A time-dependent close-coupling method based on an expansion of a one-electron 3D wavefunction in the field of H+2 is used to calculate single-ionization cross sections at incident energies ranging from 50 keV to 1.5 MeV. Averaging over the molecular orientations, the single-ionization cross sections are in reasonable agreement with time-dependent basis set calculations and experiment. A time-dependent close-coupling method based on an expansion of a two-electron 6D wavefunction in the field of H2 +2 is used to calculate single- and double-ionization cross sections at an incident energy of 100 keV. Initiatory 6D results for the H+2 production cross section range are somewhat lower than experiment, while the H+ production cross section range brackets experiment.},
doi = {10.1088/0953-4075/43/23/235201},
journal = {Journal of Physics. B, Atomic, Molecular and Optical Physics},
issn = {0953-4075},
number = 23,
volume = 43,
place = {United States},
year = {2010},
month = {11}
}

Works referenced in this record:

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