Dust structures in cryogenic dc discharge: Some suggestions for future research

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

Antipov, S.N.^1 ; Vasiliev, M.M.^1 ; Petrov, O.F.^1

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13, Moscow

125412, Russia^1

关键词: Dc discharges;    DC glow discharge;    Dust particle;    Dust structure;    Dusty plasmas;    Dynamical properties;    Moving particles;    Two-component;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/653/1/012134/pdf
DOI  :  10.1088/1742-6596/653/1/012134

来源: IOP

【 摘 要 】

In this work, the cryogenic dusty plasma, which is represented by a mixture of two dust components with different structural and dynamical properties, was experimentally investigated. Experiments were conducted in dc glow discharge at temperatures 10 and 77 K using CeO2micron powder as a dust. In dust structures obtained one of the components consists of dust particles with chain-like ordering (dust chains) and another component consists of fast- moving particles orbiting horizontally through the first component ("crazy" particles). Dust particle velocity distribution functions were obtained. The possible reasons of two-component dust structure formation were discussed.