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

Abstract

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.

Authors:
 [1]
  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)
Publication Date:
OSTI Identifier:
6639988
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas; (United States)
Additional Journal Information:
Journal Volume: 1:3; Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
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-)

Citation Formats

Jung, Y. Screening modification on the trajectory of the projectile electron in the electron--ion excitation in dense plasmas. United States: N. p., 1994. Web. doi:10.1063/1.870772.
Jung, Y. Screening modification on the trajectory of the projectile electron in the electron--ion excitation in dense plasmas. United States. https://doi.org/10.1063/1.870772
Jung, Y. 1994. "Screening modification on the trajectory of the projectile electron in the electron--ion excitation in dense plasmas". United States. https://doi.org/10.1063/1.870772.
@article{osti_6639988,
title = {Screening modification on the trajectory of the projectile electron in the electron--ion excitation in dense plasmas},
author = {Jung, Y},
abstractNote = {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.},
doi = {10.1063/1.870772},
url = {https://www.osti.gov/biblio/6639988}, journal = {Physics of Plasmas; (United States)},
issn = {1070-664X},
number = ,
volume = 1:3,
place = {United States},
year = {Tue Mar 01 00:00:00 EST 1994},
month = {Tue Mar 01 00:00:00 EST 1994}
}