Orientation phenomena for electron-ion collisional excitations in a classical nonideal plasma
Abstract
Orientation phenomena for direct 1s [rightward arrow] 2p±1 excitations in electron hydrogenic-ion collisions are investigated in a classical nonideal plasma. An effective pseudopotential model taking into account plasma-screening and collective effects is applied to describe the interaction potential in a nonideal plasma. The orientation parameter for direct 1s [rightward arrow] 2p±1 excitations in a nonideal plasma is obtained as a function of the impact parameter, the nonideal-plasma parameter, the Debye length, and the projectile energy. The result shows that the nonideal effect reduces the propensity of the 1s [rightward arrow] 2p[minus sign]1 transition. It is also found that the nonideal effect on the orientation parameter increases with increasing projectile energy.
- Publication:
-
Journal of Plasma Physics
- Pub Date:
- April 2002
- DOI:
- 10.1017/S0022377801001611
- Bibcode:
- 2002JPlPh..67..183J