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Article
Triple-Differential Cross Sections for Target Ionization with Simultaneous Projectile Detachment in 200-keV H⁻ + He Collisions
Physical Review A: Atomic, Molecular, and Optical Physics
  • T. Ferger
  • Michael Schulz, Missouri University of Science and Technology
  • Daniel Fischer, Missouri University of Science and Technology
  • B. Najjari
  • R. Moshammer
  • J. D. Ullrich
Abstract

We have performed a kinematically complete experiment for target ionization with simultaneous projectile detachment (TIPD) in 200-keV H− + He collisions. From the data we extracted triple-differential cross sections (TDCSs) for each electron separately. These TDCSs closely resemble corresponding data for single ionization by charged-particle impact. Surprisingly, the contributions from higher-order processes to TIPD, proceeding through two independent interactions of each electron with the core of the respective other collision partner, are found to be somewhat larger than the first-order process proceeding through the electron-electron interaction.

Department(s)
Physics
Sponsor(s)

German Research Association
National Science Foundation (U.S.)

Keywords and Phrases
  • Electrons,
  • Helium,
  • Ionization,
  • Projectiles,
  • Electron-electron interaction,
  • Projectile detachment,
  • Triple-differential cross section (TDCS),
  • High energy physics,
  • Collisions (Nuclear physics)
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2007 American Physical Society (APS), All rights reserved.
Publication Date
10-1-2007
Disciplines
Citation Information
T. Ferger, Michael Schulz, Daniel Fischer, B. Najjari, et al.. "Triple-Differential Cross Sections for Target Ionization with Simultaneous Projectile Detachment in 200-keV H⁻ + He Collisions" Physical Review A: Atomic, Molecular, and Optical Physics Vol. 76 Iss. 4 (2007) p. 042708-1 - 042708-6 ISSN: 1050-2947
Available at: http://works.bepress.com/michael-schulz/4/