Ion confinement efficiency in a complex plasma of glow discharge

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Abstract

The parameters of the plasma of a low-pressure glow discharge in neon with microparticles are determined numerically, at which regions with equal values of the ion confinement efficiency in the cloud of microparticles are realized. It is noted that such features are characteristic of dissipative synergetic systems controlled by feedback. Simulation of a complex glow discharge plasma in neon with microparticles showed that feedback in the plasma is realized through the source of the main losses of its energy a cloud of microparticles. Controlling the discharge parameters by changing the concentration of microparticles in the cloud makes it possible to control the concentration of ions in the plasma.

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About the authors

D. N. Polyakov

Joint Institute for High Temperatures, Russian Academy of Sciences

Author for correspondence.
Email: cryolab@ihed.ras.ru
Russian Federation, Moscow

V. V. Shumova

Joint Institute for High Temperatures, Russian Academy of Sciences; Semenov Institute of Chemical Physics, Russian Academy of Sciences

Email: cryolab@ihed.ras.ru
Russian Federation, Moscow; Moscow

L. M. Vasilyak

Joint Institute for High Temperatures, Russian Academy of Sciences

Email: cryolab@ihed.ras.ru
Russian Federation, Moscow

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2. Fig. 1. Schematic diagram of the positive column section of a glow discharge with microparticles: 1 – plasma, 2 – discharge tube of radius R, 3 – cloud of microparticles of radius rc, 4 – conventional image of feedback.

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3. Fig. 2. Domains with equal ion trap efficiency indices at different concentrations of microparticles np in the range of neon pressure P from 30 to 120 Pa and discharge current I from 0.5 to 3 mA. The boundary lines of the domains correspond to the values ​​P = 120 Pa, I = 0.5 mA (dashed lines) and P = 40 Pa, I = 3 mA (solid lines).

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