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Title: Effects of the final-state electron-ion interactions on the fully differential cross sections for heavy-particle-impact ionization of helium

Abstract

Three-dimensional fully differential cross sections for heavy-particle-impact ionization of helium are examined. Previously, the three-body distorted-wave (3DW) model has achieved good agreement with experiment in the scattering plane for small momentum transfers, but poor agreement for large momentum transfers. Poor agreement was also observed outside the scattering plane for all momentum transfers. In particular, the 3DW calculations predicted cross sections that were too small both perpendicular to the scattering plane and for large momentum transfers. The important unanswered question concerns the physical effects that cause the significant disagreement between experiment and theory. In previous works, the role of the projectile-ion interaction has been examined. Although the importance of exchange between the ejected electron and the residual bound electrons has been well established, and frequently studied, for electron-impact ionization, the importance of this effect has not been examined for heavy-particle scattering. In this paper we examine the role of this effect for heavy-particle scattering.

Authors:
; ;  [1];  [2];  [3];  [4]
  1. University of Missouri-Rolla, Rolla, Missouri 65409 (United States)
  2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
  3. Drake University, Des Moines, Iowa 50311 (United States)
  4. University of Central Florida, Orlando, Florida 32816 (United States)
Publication Date:
OSTI Identifier:
20982338
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.75.032718; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; DIFFERENTIAL CROSS SECTIONS; DISTORTED WAVE THEORY; ELECTRON-ION COLLISIONS; ELECTRON-ION COUPLING; ELECTRONS; HELIUM; INTERACTIONS; IONIZATION; IONS; MOMENTUM TRANSFER; SCATTERING; THREE-BODY PROBLEM; THREE-DIMENSIONAL CALCULATIONS

Citation Formats

Harris, A. L., Madison, D. H., Peacher, J. L., Foster, M., Bartschat, K., and Saha, H. P. Effects of the final-state electron-ion interactions on the fully differential cross sections for heavy-particle-impact ionization of helium. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.032718.
Harris, A. L., Madison, D. H., Peacher, J. L., Foster, M., Bartschat, K., & Saha, H. P. Effects of the final-state electron-ion interactions on the fully differential cross sections for heavy-particle-impact ionization of helium. United States. doi:10.1103/PHYSREVA.75.032718.
Harris, A. L., Madison, D. H., Peacher, J. L., Foster, M., Bartschat, K., and Saha, H. P. Thu . "Effects of the final-state electron-ion interactions on the fully differential cross sections for heavy-particle-impact ionization of helium". United States. doi:10.1103/PHYSREVA.75.032718.
@article{osti_20982338,
title = {Effects of the final-state electron-ion interactions on the fully differential cross sections for heavy-particle-impact ionization of helium},
author = {Harris, A. L. and Madison, D. H. and Peacher, J. L. and Foster, M. and Bartschat, K. and Saha, H. P.},
abstractNote = {Three-dimensional fully differential cross sections for heavy-particle-impact ionization of helium are examined. Previously, the three-body distorted-wave (3DW) model has achieved good agreement with experiment in the scattering plane for small momentum transfers, but poor agreement for large momentum transfers. Poor agreement was also observed outside the scattering plane for all momentum transfers. In particular, the 3DW calculations predicted cross sections that were too small both perpendicular to the scattering plane and for large momentum transfers. The important unanswered question concerns the physical effects that cause the significant disagreement between experiment and theory. In previous works, the role of the projectile-ion interaction has been examined. Although the importance of exchange between the ejected electron and the residual bound electrons has been well established, and frequently studied, for electron-impact ionization, the importance of this effect has not been examined for heavy-particle scattering. In this paper we examine the role of this effect for heavy-particle scattering.},
doi = {10.1103/PHYSREVA.75.032718},
journal = {Physical Review. A},
number = 3,
volume = 75,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}