Single K-shell excitation and double-K-shell-vacancy production in atomic Li by fast N7+ (10.6 MeV/u) and Ar18+ (95 MeV/u) projectiles have been investigated. Auger electron emission, occurring in the energy range 50-100 eV and resulting from the deexcitation of singly-or doubly-K-shell excited states, respectively, was measured for various emission angles in the range 20°-160°. For incident Ar18+, high-resolution spectra were also obtained, thereby enabling the study of alignment effects for the specific Li configurations produced in the excitation process. In the case of double-K-shell-vacancy production, the two K vacancies are produced mainly by K-shell ionization plus K-shell excitation. Electron-electron effects are important in producing these latter double-K-shell-vacancy events, as well as three-electron transitions.
|Number of pages||3|
|Journal||Physica Scripta T|
|Publication status||Published - Dec 1 1999|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Mathematical Physics
- Condensed Matter Physics