Atomic collisions with relativistic heavy ions. III. Electron capture

Journal Article · Sun Dec 01 04:00:00 EST 1985 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.32.3291· OSTI ID:5009574

Meyerhof, W E; Anholt, R; Eichler, J; Gould, H; Munger, C; Alonso, J; Thieberger, P; Wegner, H E

Cross sections for the electron capture by 82- , 140- , and 200-MeV/amu Xe/sup 54 +/, Xe/sup 53 +/, and Xe/sup 52 +/ ions incident on thin solid targets from Be to Au were measured. The measurements are compared with calculations of radiative and nonradiative capture. The nonradiative capture calculations are based on the relativistic eikonal approximation which includes transitions from K, L, and M shells of the target to nearly all projectile shells. In high-Z targets, nonradiative capture into excited states of the projectile is dominant, as predicted by the eikonal calculations and confirmed by comparing measured cross sections for bare Xe/sup 54 +/ and Xe/sup 52 +/ (1s/sup 2/) projectiles. A simple formula for estimating nonradiative-electron-capture cross sections for relativistic-ion accelerator design and other applications is derived. Double and triple electron capture are also observed in the low-velocity, high-Z collisions.

• Research Organization: Department of Physics, Stanford University, Stanford, California 94305-2196
• DOE Contract Number: AC03-76SF00098; AC02-76CH00016
• OSTI ID: 5009574
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 32:6; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CAPTURE
CHARGED PARTICLES
COMPARATIVE EVALUATIONS
CROSS SECTIONS
EIKONAL APPROXIMATION
ELECTRON CAPTURE
ENERGY RANGE
GEV RANGE
GEV RANGE 10-100
ION SPECTROSCOPY
IONIZATION
IONS
MULTICHARGED IONS
RELATIVISTIC RANGE
SOLIDS
SPECTROSCOPY
XENON IONS