Projectile charge and velocity dependence of (2p{sup 2}){sup 1}D and (2s2p){sup 1}P{sup O}, autoionization line profiles produced by H{sup +}, He{sup +} and He{sup 2+} impact on He for zero degree observation
Journal Article
·
· Bulletin of the American Physical Society
OSTI ID:281189
- Univ. of Nevada, Reno, NV (United States); and others
We have measured double differential cross sections for the (2p{sup 2}){sup 1}D and (2s2p){sup 1}P{sup O} states of He produced by fast H{sup +}, He{sup +} and He{sup ++} impact on He with velocities ranging from 100keV/amu to 400keV/amu. The He{sup **} (212l`) autoionization line profiles strongly depend on the projectile charge and velocity at zero degree observation angle. This dependency is mainly due to strong Coulomb interaction between the scattered projectile and emitted autoionization electron and additional interference effects between the resonances and continuum. In addition, drastic line broadening effects of the (2p{sup 2}){sup 1}D state, interference oscillations and phase shifts have also been studied. The experimental results have been compared with theoretical calculations where the influence of three body Coulomb Interaction in the Final State (CIFS) is included.
- OSTI ID:
- 281189
- Report Number(s):
- CONF-9305421--
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 38; ISSN BAPSA6; ISSN 0003-0503
- Country of Publication:
- United States
- Language:
- English
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