skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Dusty plasma in a glow discharge in helium in temperature range of 5–300 K

Abstract

Dusty plasma structures in glow discharge in helium in the temperature range of 5–300 K are investigated experimentally. We have described the experimental setup that makes it possible to continuously vary the temperature regime. The method for experimental data processing has been described. We have measured interparticle distances in the temperature range of 9–295 K and compared them with the Debye radius. We indicate the ranges of variations in experimental parameters in which plasma–dust structures are formed and various types of their behavior are manifested (rotation, vibrations of structures, formation of vertical linear chains, etc.). The applicability of the Yukawa potential to the description of the structural properties of a dusty plasma in the experimental conditions is discussed.

Authors:
; ; ; ; ; ;  [1]
  1. Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation)
Publication Date:
OSTI Identifier:
22617046
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 124; Journal Issue: 3; Other Information: Copyright (c) 2017 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPARATIVE EVALUATIONS; DATA PROCESSING; GLOW DISCHARGES; HELIUM; PLASMA; ROTATION; YUKAWA POTENTIAL

Citation Formats

Samoilov, I. S., Baev, V. P., Timofeev, A. V., E-mail: timofeevalvl@gmail.com, Amirov, R. Kh., Kirillin, A. V., Nikolaev, V. S., and Bedran, Z. V. Dusty plasma in a glow discharge in helium in temperature range of 5–300 K. United States: N. p., 2017. Web. doi:10.1134/S106377611702008X.
Samoilov, I. S., Baev, V. P., Timofeev, A. V., E-mail: timofeevalvl@gmail.com, Amirov, R. Kh., Kirillin, A. V., Nikolaev, V. S., & Bedran, Z. V. Dusty plasma in a glow discharge in helium in temperature range of 5–300 K. United States. doi:10.1134/S106377611702008X.
Samoilov, I. S., Baev, V. P., Timofeev, A. V., E-mail: timofeevalvl@gmail.com, Amirov, R. Kh., Kirillin, A. V., Nikolaev, V. S., and Bedran, Z. V. Wed . "Dusty plasma in a glow discharge in helium in temperature range of 5–300 K". United States. doi:10.1134/S106377611702008X.
@article{osti_22617046,
title = {Dusty plasma in a glow discharge in helium in temperature range of 5–300 K},
author = {Samoilov, I. S. and Baev, V. P. and Timofeev, A. V., E-mail: timofeevalvl@gmail.com and Amirov, R. Kh. and Kirillin, A. V. and Nikolaev, V. S. and Bedran, Z. V.},
abstractNote = {Dusty plasma structures in glow discharge in helium in the temperature range of 5–300 K are investigated experimentally. We have described the experimental setup that makes it possible to continuously vary the temperature regime. The method for experimental data processing has been described. We have measured interparticle distances in the temperature range of 9–295 K and compared them with the Debye radius. We indicate the ranges of variations in experimental parameters in which plasma–dust structures are formed and various types of their behavior are manifested (rotation, vibrations of structures, formation of vertical linear chains, etc.). The applicability of the Yukawa potential to the description of the structural properties of a dusty plasma in the experimental conditions is discussed.},
doi = {10.1134/S106377611702008X},
journal = {Journal of Experimental and Theoretical Physics},
number = 3,
volume = 124,
place = {United States},
year = {Wed Mar 15 00:00:00 EDT 2017},
month = {Wed Mar 15 00:00:00 EDT 2017}
}
  • The magnetic anisotropy of V/sub 3/O/sub 5/ was investigated by magneto-torque measurements in the temperature range from 4.2 to 300 K. It has been confirmed that the Neel temperature is about 75 K and that two of the three principal axes vary with temperature in both the paramagnetic and antiferromagnetic states. The results are explained on a simplified four-sublattice model.
  • ..beta..-BN was synthesized at 70 kbar and 2200/sup 0/C from technical graphite-like impure BN. Specific heat, enthalpy, entropy, bound energy, and Gibbs free energy were determined at 5 to 300/sup 0/K. The temperature dependence of the Debye temperature of cubic BN was also determined. It is shown that cubic BN is an analog of diamond. (DLC)
  • A jump of dust density propagating through the dusty plasma structure has been observed. To excite the disturbance an impulse of axial magnetic field to the dusty plasma in a dc glow discharge striation has been applied. This impulse resulted in the dynamical stretching of the dusty plasma structure. During the reconstruction of the structure a ramp-shaped perturbation of dust density appeared. The perturbation was steepening and formed into a dust-acoustic shock. The anomalously high shock compression is observed.
  • In this paper, the authors report on a series of experiments that use carefully applied perturbations to a dust cloud to reproducibly investigate the formation of the microparticle cloud and the formation of dust cloud-plasma interface. Here, one micron diameter alumina microparticles are suspended in an argon dc glow discharge plasma. A perturbing voltage pulse is applied to the cathode, causing a momentary disruption in the confinement of the dust cloud. After the perturbation, the cloud reforms, typically with a central 'mass' and two 'streams' of particles that are flowing into the cloud from both sides. Through the use ofmore » stereoscopic particle image velocimetry (stereo-PIV), the complete three-dimensional velocity of the microparticles can be measured. The particles in the streams are used as test particles to characterize the forces acting upon the microparticles. Analysis of the experimental measurements suggests that the effective neutral drag force may be lower than expected.« less