Influence of coupling on thermal forces and dynamic friction in plasmas with multiple ion species

The recently proposed effective potential theory [Phys. Rev. Lett. 110, 235001 (2013)] is used to investigate the influence of coupling on inter-ion-species diffusion and momentum exchange in multi-component plasmas. Thermo-diffusion and the thermal force are found to diminish rapidly as strong coup...

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Veröffentlicht in:	Physics of plasmas 2017-07, Vol.24 (7)
Hauptverfasser:	Kagan, Grigory, Baalrud, Scott D., Daligault, Jérôme
Format:	Artikel
Sprache:	eng
Schlagworte:	70 PLASMA PHYSICS AND FUSION TECHNOLOGY Atomic and molecular collisions Chemical elements Coefficient of friction Collision frequency Coupling Electrostatics Friction Inertial confinement fusion Plasma collisions Plasma confinement Plasma physics Plasma processing Plasma waves Plasmas (physics) Potential theory Species diffusion Transport properties
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Zusammenfassung:	The recently proposed effective potential theory [Phys. Rev. Lett. 110, 235001 (2013)] is used to investigate the influence of coupling on inter-ion-species diffusion and momentum exchange in multi-component plasmas. Thermo-diffusion and the thermal force are found to diminish rapidly as strong coupling onsets. For the same coupling parameters, the dynamic friction coefficient is found to tend to unity. These results provide an impetus for addressing the role of coupling on diffusive processes in inertial confinement fusion experiments.
ISSN:	1070-664X 1089-7674
DOI:	10.1063/1.4986086