Armenian Journal of Physics

Acoustoplasma State of Matter

Mkrtchyan, A.R. and ABRAHAMYAN, A.S. (2020) Acoustoplasma State of Matter. Armenian Journal of Physics, 13 (2). pp. 131-139. ISSN 1829-1171

PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader


In our experiments it was shown that the modulation of the discharge by the current, which contains constant and variable components, leads to the transition of the plasma to a new state, which was called acoustoplasmic. In this new state, many parameters of acoustoplasma differ from the parameters of the plasma when it is supplied with direct current. In the plasma of the positive glow discharge column the electron concentration is determined by the parameters of the external circuit and the modulation of the discharge current. The modulation of the electron concentration leads not only to the modulation of the level populations, but also to the disturbance of the relative equilibrium of the populations. It becomes possible the inversion of the populations of individual states, which will lead to the appearance of anomalously strong lines in the emission spectra. In a non-equilibrium plasma, due to the multi-level energy structure of atoms and molecules, there are dozens of mutually transforming neutral components with different levels of excitation. The report presents the experimentally obtained results of studies of acoustoplasma states. All the diversity of the research is presented in the form of a nomogram.

Item Type:Article
Subjects:Physics > 43.Acoustics
Physics > 50.Physics of gases, plasmas, and electric discharges
ID Code:1102
Deposited By:Prof. Vladimir Aroutiounian
Deposited On:30 Jul 2020 22:18
Last Modified:30 Jul 2020 22:18

Repository Staff Only: item control page