The influence of multi-ion streaming on the variation of dust particle surface potential with Maxwellian/non-Maxwellian dusty plasmas

Abstract

Dust grain potential variation influence by positive ion streaming as well as negative ion streaming is presented in a complex (dusty) plasma following the Maxwellian/non-Maxwellian (kappa distribution and Cairns distribution) function. The components of complex plasma are the electrons, ions [positive and negative], and dust grains having negative charge. For this purpose, the mathematical statement (equation) of currents is derived for dust grains having negative charge to fulfill the equilibrium state (viz., qD = constant). It is observed numerically that positive ion streaming speed as well as negative ion streaming speed has a significant influence on the surface potential of dust particles, e.g., by increasing the positive ion and negative ion streaming speed, the magnitude of dust particle surface potential increases. The relevance to low-temperature research center in a non-equilibrium complex (dusty) plasma is precisely discussed by associating oxygen ion (negative and positive) species.