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Title: Charge exchange and ionization cross sections of H{sup +}+H collision in dense quantum plasmas

The plasma screening effects of dense quantum plasmas on H{sup +}+H charge exchange and ionization cross sections are calculated by the classical trajectory Monte Carlo method. For charge exchange cross sections, it is found that the screening effects reduce cross sections slightly in weak screening conditions. However, cross sections are reduced substantially in strong screening conditions. For ionization cross sections, with the increase of screening effects, cross sections for low energies increase more rapidly than those for high energies. When the screening effects are strong enough, it is found that ionization cross sections decrease with the increase of incident H{sup +} energy. In addition, the cross sections have been compared with those in weakly coupled plasmas. It is found that in weak screening conditions, plasma screening effects in the two plasmas are approximately the same, while in strong screening conditions, screening effects of dense quantum plasmas are stronger than those of weakly coupled plasmas.
Authors:
; ; ; ;  [1] ;  [2] ;  [1] ;  [3]
  1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China and University of Chinese Academy of Sciences, Beijing 100049 (China)
  2. Joint Laboratory of Atomic and Molecular Physics of NWNU and IMP CAS, Northwest Normal University, Lanzhou, Gansu 730070 (China)
  3. (China)
Publication Date:
OSTI Identifier:
22218452
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 11; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 74 ATOMIC AND MOLECULAR PHYSICS; APPROXIMATIONS; CHARGE EXCHANGE; COMPARATIVE EVALUATIONS; CROSS SECTIONS; HYDROGEN IONS 1 PLUS; ION-ATOM COLLISIONS; IONIZATION; MONTE CARLO METHOD; PLASMA DENSITY; PLASMA SIMULATION; QUANTUM PLASMA