Damping of Oscillations of Charged Particles in the Thermal Field in a Glow-Discharge Plasma

IF 0.9 4区 物理与天体物理 Q4 PHYSICS, FLUIDS & PLASMAS
D. N. Polyakov, V. V. Shumova, L. M. Vasilyak
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引用次数: 0

Abstract

It is demonstrated experimentally that the thermophoretic force acting upon microparticles in the thermal field in complex plasma can be used for effective control of a cloud of charged microparticles formed in an electrostatic trap in the positive-column stratum of a glow discharge. Variation in the thermal-field temperature gradient is found to cause changes in the cloud location in plasma volume, its shape and size, along with suppression of oscillations of microparticles in the directions transverse with respect to this gradient. Microparticles of larger size experience stronger thermal action, and damping of microparticle oscillations occurs in conjunction with changes in the cloud spatial position. Obtained experimental results are consistent with theoretical concepts of the phenomena under consideration.

Abstract Image

实验证明,在复杂等离子体的热场中,作用于微粒子的热电泳力可用于有效控制辉光放电正极柱层静电阱中形成的带电微粒子云。发现热场温度梯度的变化会引起等离子体体积中云的位置、形状和大小的变化,同时会抑制微粒子在相对于该梯度的横向方向上的振荡。粒径较大的微粒子经历更强的热作用,微粒子振荡的阻尼与云空间位置的变化有关。得到的实验结果与所考虑的现象的理论概念是一致的。
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来源期刊
Plasma Physics Reports
Plasma Physics Reports 物理-物理:流体与等离子体
CiteScore
1.90
自引率
36.40%
发文量
104
审稿时长
4-8 weeks
期刊介绍: Plasma Physics Reports is a peer reviewed journal devoted to plasma physics. The journal covers the following topics: high-temperature plasma physics related to the problem of controlled nuclear fusion based on magnetic and inertial confinement; physics of cosmic plasma, including magnetosphere plasma, sun and stellar plasma, etc.; gas discharge plasma and plasma generated by laser and particle beams. The journal also publishes papers on such related topics as plasma electronics, generation of radiation in plasma, and plasma diagnostics. As well as other original communications, the journal publishes topical reviews and conference proceedings.
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