Dynamic screening effects on atomic ionizations in kappa-Maxwellian plasmas

The dynamic plasma screening effects on the atomic ionization process are investigated in κ -Maxwellian distribution plasmas using the semiclassical analysis. The projectile-target interaction Hamiltonian in the momentum space is obtained by the plasma dielectric function in κ -Maxwellian distributi...

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Bibliographic Details
Published in:Physics of plasmas 2005-01, Vol.12 (1), p.14506
Main Authors: Song, Mi-Young, Jung, Young-Dae
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DIELECTRIC PROPERTIES
IONIZATION
PLASMA
PROBABILITY
SEMICLASSICAL APPROXIMATION
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Summary:The dynamic plasma screening effects on the atomic ionization process are investigated in κ -Maxwellian distribution plasmas using the semiclassical analysis. The projectile-target interaction Hamiltonian in the momentum space is obtained by the plasma dielectric function in κ -Maxwellian distribution plasmas. The semiclassical ionization probability is obtained as a function of the impact parameter b , projectile electron energy E , Debye length Λ , spectral index κ , and velocity ratio v ∕ v Th . It is found that the dynamic screening effect increases for small velocity ratios and decreases for large velocity ratios with the decreasing spectral index.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.1831279