Electron capture by metastable projectiles on He and Ne
Electron capture to n> or =2 levels of F/sup 7 +/ (1s2s) /sup 3/S projectiles lead to three-electron ions with an energetically allowed K-Auger decay channel. We have measured the F K-Auger emission spectra for collisions with thin gas targets of He and Ne with sufficiently high resolution to distinguish capture to several of the low-lying n values. The K-Auger production cross sections are reported as a function of the n level into which the electron is captured. The n-level dependence is measured for projectile energies of 6, 9, 12, and 15 MeV and is compared to the Oppenheimer-Brinkman-Kramers OBK model for charge transfer and to a 1/n/sup 3/ function. The measured K-Auger electron-production cross sections closely follow the 1/n/sup 3/ function which differs from the predicted OBK n dependence, even though the cross sections for the higher n levels agree with the predicted OBK energy dependence. The effects of cascading upon the calculated n dependence are also studied.
- Research Organization:
- Department of Physics, Kansas State University, Manhattan, Kansas 66506
- OSTI ID:
- 5211475
- Journal Information:
- Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 29:1; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
AUGER EFFECT
CAPTURE
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DATA
ELECTRON CAPTURE
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY SPECTRA
EXPERIMENTAL DATA
FLUIDS
FLUORINE IONS
GASES
HELIUM
INFORMATION
INNER-SHELL IONIZATION
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
K SHELL
MULTICHARGED IONS
NEON
NONMETALS
NUMERICAL DATA
RARE GASES
SPECTRA