Semiclassical transition probabilities for the electron-impact excitation of hydrogenic ions in dense plasmas
- Department of Physics, Hanyang University, Ansan, Kyunggi-Do 425-791 (Korea, Republic of)
Plasma-screening effects are investigated on semiclassical transition probabilities for electron-impact excitation of hydrogenic ions in dense plasmas. The electron--ion interaction potential is obtained by a nonspherical Debye--Hueckel model of the screened Coulomb interaction for the interesting domain of the Debye length {Lambda}/{ital a}{sub {ital Z}}{ge}10. Semiclassical straight-line trajectory method is used to describe the behavior of the projectile electron. The screening effect is increased with increasing the projectile energy. The plasma-screening effect on the optically allowed (dipole) transition (1{ital s}{r_arrow}2{ital p}) is found to be more effective than that on the optically forbidden transition (1{ital s}{r_arrow}2{ital s}). For 1{ital s}{r_arrow}2{ital s} transition, the maximum position of the transition probability is almost unchanged with increasing or decreasing the projectile energy and plasma-screening effect. However, for 1{ital s}{r_arrow}2{ital p} transition, the maximum position of the transition probability has receded from the nucleus as the projectile energy increases. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.
- OSTI ID:
- 164978
- Journal Information:
- Physics of Plasmas, Vol. 2, Issue 1; Other Information: PBD: Jan 1995
- Country of Publication:
- United States
- Language:
- English
Similar Records
Antiscreening channels for ion{endash}ion collisional excitations in dense plasmas
Electron--ion collisional excitations in strongly coupled plasmas using the ion-sphere model