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Title: Ionization transition in low-density plasma

Abstract

Ionization equilibrium in low-density low-temperature plasma is considered. It is demonstrated using hydrogen and cesium as examples that the Saha equation predicts an almost jump-like change in the electron density on isochors in a narrow temperature range. Thus, in contrast to a smooth rise in the degree of ionization with increasing temperature at high plasma densities, an increase in the temperature in low-density plasma should result in a sharp transition from a neutral state to a fully ionized plasma. This transition is accompanied by a jump-like increase in the electric conductivity. The relation of these effects to the recombination transition in the model of the early Universe is discussed. The possibility of observing such a transition experimentally and the problems concerning the time of plasma relaxation into an equilibrium state at long free path lengths of plasma particles are considered.

Authors:
; ;  [1]
  1. Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation)
Publication Date:
OSTI Identifier:
22047498
Resource Type:
Journal Article
Journal Name:
Plasma Physics Reports
Additional Journal Information:
Journal Volume: 37; Journal Issue: 9; Other Information: Copyright (c) 2011 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-780X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; CESIUM; ELECTRIC CONDUCTIVITY; ELECTRON DENSITY; ELECTRON TEMPERATURE; EQUILIBRIUM; HYDROGEN; ION TEMPERATURE; IONIZATION; PLASMA; PLASMA DENSITY; RECOMBINATION; RELAXATION; SAHA EQUATION; UNIVERSE

Citation Formats

Triger, S. A., Khomkin, A. L., and Shumikhin, A. S. Ionization transition in low-density plasma. United States: N. p., 2011. Web. doi:10.1134/S1063780X11080095.
Triger, S. A., Khomkin, A. L., & Shumikhin, A. S. Ionization transition in low-density plasma. United States. doi:10.1134/S1063780X11080095.
Triger, S. A., Khomkin, A. L., and Shumikhin, A. S. Thu . "Ionization transition in low-density plasma". United States. doi:10.1134/S1063780X11080095.
@article{osti_22047498,
title = {Ionization transition in low-density plasma},
author = {Triger, S. A. and Khomkin, A. L. and Shumikhin, A. S.},
abstractNote = {Ionization equilibrium in low-density low-temperature plasma is considered. It is demonstrated using hydrogen and cesium as examples that the Saha equation predicts an almost jump-like change in the electron density on isochors in a narrow temperature range. Thus, in contrast to a smooth rise in the degree of ionization with increasing temperature at high plasma densities, an increase in the temperature in low-density plasma should result in a sharp transition from a neutral state to a fully ionized plasma. This transition is accompanied by a jump-like increase in the electric conductivity. The relation of these effects to the recombination transition in the model of the early Universe is discussed. The possibility of observing such a transition experimentally and the problems concerning the time of plasma relaxation into an equilibrium state at long free path lengths of plasma particles are considered.},
doi = {10.1134/S1063780X11080095},
journal = {Plasma Physics Reports},
issn = {1063-780X},
number = 9,
volume = 37,
place = {United States},
year = {2011},
month = {9}
}