Volume 110, Number 1, April 2015
|Number of page(s)||6|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||17 April 2015|
Formation and dynamics of nano-particles in a stratified spherical glow discharge
1 Institute of Thermophysics SB RAS - Lavrentyev Ave., 1, 630090 Novosibirsk, Russia
2 Novosibirsk State University - Pirogova St. 2, 630090 Novosibirsk, Russia
Received: 3 February 2015
Accepted: 25 March 2015
The formation of clouds of dust nano-particles in a spherical dc glow discharge in ethanol was observed. Nano-particles were formed in a process of coagulation of ethanol dissociation products in a plasma of gas discharge. During the process the particles were captured into clouds in the electric potential wells of the strong striations of a spherical discharge. Periodically, the cloud of nano-particles experienced some sudden instability (explosion), and started to move to the cathode at high velocity. It was proved that the velocity of the particle clouds was an exponentially decaying function of time as in the case of dissipative dust solitary waves.
PACS: 52.27.Lw – Dusty or complex plasmas; plasma crystals / 52.35.Mw – Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.)
© EPLA, 2015
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