Formation of the structures from dusty clusters in neon dc discharge under cooling

31st International Conference on Equations of State for Matter

Polyakov, D.N.^1 ; Shumova, V.V.^1 ; Vasilyak, L.M.^1

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13 Bldg 2, Moscow

125412, Russia^1

关键词: Dc discharges;    Gas temperature;    Low discharge current;    Ordered structures;    Positive column;    Structural transitions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012181/pdf
DOI  :  10.1088/1742-6596/774/1/012181

来源: IOP

【 摘 要 】

The formation of structures consisted of dusty clusters in plasma at the discharge tube cooling to a temperature of liquid nitrogen was discovered. The dependence of the reduced electric field in the positive column of a discharge on gas temperature was experimentally measured. Depending on the pressure of neon were observed the different structural transitions in the regions of growing current-voltage characteristics at low discharge currents ≤ 1 mA. It was found that the regions of existence of structured clusters and the regions of structural transitions were characterized by the higher values of the reduced electric field than the regions of destruction of ordered structures.