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Differential measurements of ionization and inelastic energy losses in 0. 25--3. 0-MeV collisions of Kr ions with Kr and Xe targets

Journal Article · · Phys. Rev. A; (United States)
;

The final charge states of the scattered ions and the inelastic energy losses have been measured for single collisions of 0.25--3.0-MeV Kr ions with Kr and Xe targets. The charge states of the scattered ions were measured as functions of scattering angle (from 0.8/sup 0/ to 45/sup 0/) ion energies from 0.25 to 3.0 MeV. The total inelastic energy losses were measured using the scattered- and recoil-particle coincidence technique for 0.4-, 0.6-, and 1.0-MeV Kr/sup +/-Kr collision energies and from 0.4 to 1.4 MeV for the Kr/sup +/-Xe combination. The results show the impact-parameter dependence of several inner-shell excitations and confirm the quasimolecular nature of heavy-ion--atom collisions within the framework of the Fano-Lichten model. For the Kr-Kr case, excitations are observed for values of the distance of closest approach, R/sub 0/, of 0.40, 0.30, and 0.20 A; and for the Kr-Xe case, excitations are observed at R/sub 0/ values of 0.28, 0.18, and 0.09 A. The data show agreement with the molecular-potential calculations of Eichler and co-workers.

Research Organization:
Department of Physics and the Institute of Materials Science, The University of Connecticut, Storrs, Connecticut 06268
OSTI ID:
7001377
Journal Information:
Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 29:3; ISSN PLRAA
Country of Publication:
United States
Language:
English

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Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
ELECTRON-PROMOTION MODEL
ELEMENTS
ENERGY LOSSES
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXPERIMENTAL DATA
FLUIDS
GASES
IMPACT PARAMETER
INELASTIC SCATTERING
INFORMATION
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KEV RANGE
KEV RANGE 100-1000
KRYPTON
LOSSES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 01-10
NONMETALS
NUMERICAL DATA
RARE GASES
SCATTERING
XENON
XENON IONS