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Quantum screening effects on dipole and quadrupole electron-impact excitation channels in dense high-temperature plasmas

Title
Quantum screening effects on dipole and quadrupole electron-impact excitation channels in dense high-temperature plasmas
Author
정영대
Issue Date
2002-09
Publisher
AMER INST PHYSICS
Citation
Physics of Plasmas, v. 9, issue. 9, page. 4040-4044
Abstract
Screening effects on the dipole and quadrupole electron-impact excitation of hydrogenic ions in dense high-temperature plasmas are investigated using the effective pseudopotential model that takes into account both quantum-mechanical and plasma screening effects. The semiclassical impact parameter method is applied to the path of the projectile electron in order to visualize the electron-impact excitation probability as a function of the impact parameter, thermal de Broglie wavelength, Debye length, and projectile energy. The excitation probability is found to be significantly decreased with increasing quantum screening effects. It is found that the maximum position of the excitation probability is receded from the target nucleus with decreasing projectile energy. It is also found that the quantum screening effects on the dipole excitation process are almost identical to those on the quadrupole excitation process.
URI
https://aip.scitation.org/doi/10.1063/1.1496509https://repository.hanyang.ac.kr/handle/20.500.11754/157440
ISSN
1070-664X; 1089-7674
DOI
10.1063/1.1496509
Appears in Collections:
COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > APPLIED PHYSICS(응용물리학과) > Articles
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