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Angular dependence of multiple-electron capture in 90-keV Ne/sup 7 +/-Ne collisions

Journal Article · · Phys. Rev. A; (United States)
; ; ; ; ; ; ;
Multiple-electron capture as a function of the projectile scattering angle in 90-keV Ne/sup 7 +/ collisions on Ne atoms was investigated in the angular range from 1 to 20 mrad by a recoil-ion--projectile coincidence technique which records the final charge states of both product ions. A single-electron-capture probability P/sub SC/(theta) is determined, which, with application of binomial statistics, provides a good description of measured charge-state distributions for theta<10 mrad. For scattering angles theta>10 mrad, projectile and recoil-ion charge-state distributions are nearly identical, indicating full participation of all L-shell electrons in quasimolecular states. Nearly all electron-capture processes are followed by autoionization, indicating the importance of capture into multiply excited states. We observed a strong angular dependence of the autoionization probabilities.
Research Organization:
Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
OSTI ID:
5161378
Journal Information:
Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 37:12; ISSN PLRAA
Country of Publication:
United States
Language:
English

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Related Subjects

640304* -- Atomic
Molecular &amp; Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
AUTOIONIZATION
CAPTURE
CHARGED PARTICLES
COINCIDENCE METHODS
COLLISIONS
COUNTING TECHNIQUES
ELECTRON CAPTURE
ELEMENTS
ENERGY RANGE
FLUIDS
GASES
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
KEV RANGE
KEV RANGE 10-100
MULTICHARGED IONS
MULTILEVEL ANALYSIS
NEON
NEON IONS
NONMETALS
RARE GASES
RECOILS
SCATTERING
SMALL ANGLE SCATTERING
SPACE DEPENDENCE