Oriented {ital s}-{ital p} excitation in electron--ion collisions in dense plasmas
- Department of Physics, Hanyang University, Ansan, Kyunggi-Do 425-791 (Korea, Republic of)
In dense plasmas the orientation and alignment phenomena for direct {ital s}-{ital p} excitation in electron--hydrogenic ion collisions are investigated using a first-order semiclassical straight-line path approximation. The interaction potential between the projectile and bound electrons is obtained by a nonspherical Debye--Hueckel model. Angular momentum orientation parameter {ital L}{sub {perpendicular}} for direct {ital s}-{ital p} excitation is determined for various Debye lengths and projectile energies. The plasma-screening effect appreciably reduces a favoring of the {ital s}{r_arrow}{ital p}{sub {minus}1} transition, especially, for high-energy projectiles. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.
- OSTI ID:
- 167053
- Journal Information:
- Physics of Plasmas, Vol. 2, Issue 3; Other Information: PBD: Mar 1995
- Country of Publication:
- United States
- Language:
- English
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