Multielectron processes in 10-keV/u Ar[sup [ital q]+] (5[le][ital q][le]17) on Ar collisions

Journal Article · Sun May 01 04:00:00 EDT 1994 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.49.3586· OSTI ID:5073131

Ali, R; Cocke, C L; Raphaelian, M L.A.; Stockli, M ^[1]

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1. J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506-2604 (United States)

We have used time-of-flight coincidence techniques to study multielectron reactions in 10-keV/u ([ital v]=0.632 a.u.) Ar[sup [ital q]+] (5[le][ital q][le]17) on Ar collisions. Absolute cross sections for total charge-transfer ([sigma][sub [ital q]]), projectile charge-change ([sigma][sub [ital q],][ital q][sub [minus][ital k]]), recoil production ([sigma][sub [ital q]][sup [ital i]]), and phenomenological cross sections ([sigma][sub [ital q],][ital q][sub [minus][ital k]][sup [ital i]]) have been obtained by normalizing to cross sections reported in the literature [H. Klinger, A. Mueller, and E. Salzborn, J. Phys. B 8, 230 (1975)]. The data have been used to critically test the predictions of the molecular classical overbarrier model (MCBM) [A. Niehaus, J. Phys. B 19, 2925 (1986)] and rather impressive agreements have been obtained. In particular, the predictions of target outer-shell excitation seem to have supporting evidence in this set of data. A stabilization scheme for the multiply excited projectile following charge transfer is proposed to complement the MCBM predictions and the gross features of the final reaction products are fairly accounted for. In addition, enhanced electron loss from the projectile-target system is observed in hard collisions for low-charged projectiles ([ital q][le]8) and is attributed to inner-shell excitation via molecular-orbital promotion.

• OSTI ID: 5073131
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 49:5; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
CHARGE EXCHANGE
CHARGED PARTICLES
COINCIDENCE METHODS
COLLISIONS
COUNTING TECHNIQUES
CROSS SECTIONS
ELEMENTS
ENERGY RANGE
FLUIDS
GASES
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KEV RANGE
MULTICHARGED IONS
NONMETALS
RARE GASES
RECOILS
TIME-OF-FLIGHT METHOD