Screening modification on the trajectory of the projectile electron in the electron--ion excitation in dense plasmas

Journal Article · Tue Mar 01 00:00:00 EST 1994 · Physics of Plasmas; (United States)

DOI:https://doi.org/10.1063/1.870772· OSTI ID:6639988

Jung, Y ^[1]

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1. Department of Physics, Hanyang University, Ansan, Kyunggi-Do 425-791 (Korea, Republic of) Space Science Laboratory, ES-65, NASA/Marshall Space Flight Center, Huntsville, Alabama 35812 (United States)

A behavior of the trajectory of the projectile electron in the electron-impact excitation of hydrogenic ions in dense plasmas is investigated using modified hyperbolic-orbit method in the semiclassical approximation. The interaction potential is obtained by the Debye--Hueckel model of the screened Coulomb interaction for the interesting domain of the Debye length [Lambda]/[ital a][sub [ital Z]][ge]10. The screening effects on the eccentricity of the projectile path produce a significant change in the excitation cross section near excitation threshold. The result shows that the trajectory of the projectile electron becomes a hyperbolic path rather than a parabolic path because of the plasma-screening effects. For higher incident energies, the plasma-screening effects on the projectile electron are decreased.

• OSTI ID: 6639988
• Journal Information: Physics of Plasmas; (United States), Vol. 1:3; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
74 ATOMIC AND MOLECULAR PHYSICS
ELECTRON-ION COLLISIONS
SCREENING
HYDROGEN IONS
COULOMB SCATTERING
DEBYE LENGTH
EXCITED STATES
INTERATOMIC FORCES
POTENTIALS
SEMICLASSICAL APPROXIMATION
TRAJECTORIES
BASIC INTERACTIONS
CHARGED PARTICLES
COLLISIONS
DIMENSIONS
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ELECTRON COLLISIONS
ENERGY LEVELS
INTERACTIONS
ION COLLISIONS
IONS
LENGTH
SCATTERING
700380* - Elementary & Classical Processes in Plasmas- (1992-)
664300 - Atomic & Molecular Physics- Collision Phenomena- (1992-)