The electrostatic interaction of two point charges in equilibrium plasmas within the Debye approximation

30th International Conference on Interaction of Intense Energy Fluxes with Matter

Filippov, A.V.^1

State Research Center of the Russian Federation, Troitsk Institute for Innovation and Fusion Research, Pushkovykh Street 12, Troitsk, Moscow

142190, Russia^1

关键词: Charge interactions;    Charged macroparticles;    Debye approximation;    Electric field strength;    Equilibrium plasma;    External boundaries;    External boundary conditions;    Legendre polynomials;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/653/1/012125/pdf
DOI  :  10.1088/1742-6596/653/1/012125

来源: IOP

【 摘 要 】

This paper is devoted to a careful study of two charge interaction in an equilibrium plasma within the Debye approximation. The effect of external boundary conditions for the electric field strength and potential on the electrostatic force is studied. The problem is solved by the method of potential decomposition into Legendre polynomials up to the fifth multipole term included. It is shown that the effect of attraction of identically charged macroparticles is explained by the influence of the external boundary. When the size of a calculation cell is increased the attraction effect disappears and the electrostatic force is well described by the screened Debye-Hückel potential.