Influence of the nonthermal plasma shielding on the ion collisions in Lorentzian semiclassical plasmas

Journal Article · Fri Jun 15 04:00:00 EDT 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4728066· OSTI ID:22072509

Ki, Dae-Han ^[1]; Jung, Young-Dae ^[1]

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1. Department of Applied Physics, Hanyang University, Ansan, Kyunggi-Do 426-791 (Korea, Republic of)

The influence of the nonthermal plasma shielding on the elastic ion-ion collision is investigated in dense Lorentzian semiclassical plasmas. The effective interaction potential and phase theory are applied to obtain the scattering phase shift and collision cross section as functions of the spectral index of the Lorentzian plasma, impact parameter, collision energy, and plasma parameters. The result shows that the nonthermal plasma shielding effect reduces the magnitude of the scattering phase shift. It is also found that the nonthermal plasma shielding effect suppresses the ion-ion collision cross section. Hence, we have found that the ion-ion collision cross sections in thermal plasmas are always greater than those in nonthermal plasmas. In addition, it is found that the nonthermal shielding effect on the collision cross section increases with an increase of the Debye length in Lorentzian semiclassical plasmas.

• OSTI ID: 22072509
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 6 Vol. 19; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
74 ATOMIC AND MOLECULAR PHYSICS
CROSS SECTIONS
DEBYE LENGTH
IMPACT PARAMETER
ION-ION COLLISIONS
LORENTZ GAS
PHASE SHIFT
PLASMA
SCATTERING
SEMICLASSICAL APPROXIMATION
SHIELDING