Electron--ion collisional excitations in strongly coupled plasmas using the ion-sphere model
- Department of Physics, Hanyang University, Ansan, Kyunggi-Do 425-791 (Korea, Republic of)
In strongly coupled plasmas, screening effects are investigated on 1{ital s}{r_arrow}2{ital p} dipole transition probabilities for electron-impact excitation of hydrogenic ions. Electron--ion interaction is described by the ion-sphere model potential. Behavior of the projectile electron is represented by the semiclassical straight-line trajectory method. Variation of the transition probabilities is determined as a function of the plasma-screening strength through the size of the ion sphere. The transition probabilities are increased with an increase of the ion-sphere radius and the projectile energy. These results, in strongly coupled plasmas, are similar to the screening effects on 1{ital s}{r_arrow}2{ital p} dipole transition probabilities for electron--ion excitations in weakly coupled plasmas described by the classical Debye--Hueckel model. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.
- OSTI ID:
- 165191
- Journal Information:
- Physics of Plasmas, Vol. 2, Issue 5; Other Information: PBD: May 1995
- Country of Publication:
- United States
- Language:
- English
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