Electron capture and target ionization in collisions of bare projectile ions incident on helium

Journal Article · Sun Mar 01 04:00:00 EST 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.45.2922· OSTI ID:7276770

Shinpaugh, J L; Sanders, J M; Hall, J M; Lee, D H; Schmidt-Boecking, H; Tipping, T N; Zouros, T J.M.; Richard, P ^[1]

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1. J.R. Macdonald Laboratory, Kansas State University, Manhattan, Kansas 66506 (United States)

Absolute cross sections for the processes of single capture, transfer ionization, and single and double ionization were measured for C{sup 6+}, N{sup 7+}, O{sup 8+}, and F{sup 9+} projectiles incident on a helium target in the projectile velocity range of 0.25--2.0 MeV/amu. The cross sections were determined by measuring projectile-ion final charge states in coincidence with target recoil-ion final charge states. The single-capture and transfer-ionization cross sections were corrected for ionization from impurity charge states in the beam and for double-collision processes in the target gas cell. These corrections, which are necessary for the relative as well as the absolute cross sections, were found to be as large as 50% of the cross section. The measured cross sections are compared to the multistate, coupled-channel calculations of Shingal and Lin using an independent-electron model.

• OSTI ID: 7276770
• Journal Information: Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 45:5; ISSN PLRAA; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CAPTURE
CARBON IONS
CHARGED PARTICLES
COLLISIONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
ELECTRON CAPTURE
ELEMENTS
ENERGY RANGE
FLUIDS
FLUORINE IONS
GASES
HELIUM
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
MEV RANGE
MULTICHARGED IONS
NITROGEN IONS
NONMETALS
OXYGEN IONS
RARE GASES