Oscillations in mean capture [ital Q] values as functions of the projectile charge in slow Xe[sup [ital q]+]-He (25[le][ital q][le]44) collisions

Journal Article · Tue Feb 28 23:00:00 EST 1995 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.51.2191· OSTI ID:6544682

Cederquist, H; Biedermann, C; Selberg, N ^[1]; Hvelplund, P ^[2]

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1. Stockholm University, S-10405 Stockholm (Sweden)
2. Institute of Physics, University of Aarhus, DK-8000 Aarhus C (Denmark)

We have measured mean [ital Q] values for single-electron capture and transfer ionization in slow collisions between Xe projectiles of very high charge [ital q] and He. For the former process we observed an oscillatory behavior as a function of [ital q], reflecting the discrete nature of the capture states. The experimental [ital Q] values for transfer ionization are substantially higher than the minimum [ital Q] values predicted by the extended classical over-the-barrier model. These results offer an explanation for earlier reported anomalously low ratios between the cross sections for two- and one-electron removal from He in collisions with highly charged Xe [H. Andersson, G. Astner, and H. Cederquist, J. Phys. B 21, L187 (1988); H. Cederquist [ital et] [ital al]., [ital ibid]. 25, L69 (1992)].

• OSTI ID: 6544682
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 51:3; 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
ATOM COLLISIONS
CAPTURE
CHARGE STATES
CHARGED PARTICLES
COLLISIONS
CORRELATIONS
CROSS SECTIONS
ELECTRON CAPTURE
ELEMENTS
FLUIDS
GASES
HELIUM
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
MULTICHARGED IONS
NONMETALS
RARE GASES
XENON