Triple-differential cross sections for target ionization with simultaneous projectile detachment in 200-keV H{sup -}+He collisions

Journal Article · Mon Oct 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.042708· OSTI ID:21020728

Ferger, T; Najjari, B; Moshammer, R; Ullrich, J ^[1]; Schulz, M ^[2]; Fischer, D ^[3]

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1. Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany)
2. University of Missouri-Rolla, Physics Department and LAMOR, Rolla, Missouri 65409 (United States)
3. Stockholm University, Atomic Physics, Alba Nova, S-106 91 Stockholm (Sweden)

We have performed a kinematically complete experiment for target ionization with simultaneous projectile detachment (TIPD) in 200-keV H{sup -}+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.

• OSTI ID: 21020728
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 76; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOM-ATOM COLLISIONS
DIFFERENTIAL CROSS SECTIONS
ELECTRON DETACHMENT
ELECTRON-ELECTRON COUPLING
ELECTRON-ELECTRON INTERACTIONS
ELECTRONS
HYDROGEN IONS 1 MINUS
IONIZATION
KEV RANGE