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Title: Determination of the plasma effective charge from the soft X-ray spectrum and plasma conductivity at the L-2M stellarator after boronization of the vacuum chamber

Abstract

Boronization of the vacuum chamber wall results in a considerable change in the composition of the plasma generated in working pulses of the L-2M stellarator and, accordingly, in the plasma effective charge. The paper presents results of measurements of the plasma effective charge carried out by two methods in the ohmic heating mode: from the data on the plasma conductivity and from the soft X-ray spectrum of plasma emission. Comparison of the values of the plasma effective charge obtained by these two methods makes it possible to determine the conditions in which the two values are in good agreement. Under these conditions, the plasma effective charge can be correctly estimated from spectral measurements.

Authors:
;  [1]
  1. Russian Academy of Sciences, Prokhorov General Physics Institute (Russian Federation)
Publication Date:
OSTI Identifier:
22614101
Resource Type:
Journal Article
Resource Relation:
Journal Name: Plasma Physics Reports; Journal Volume: 42; Journal Issue: 7; Other Information: Copyright (c) 2016 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; EFFECTIVE CHARGE; JOULE HEATING; PLASMA; PULSES; SOFT X RADIATION; STELLARATORS; VACUUM SYSTEMS; WALLS; X-RAY SPECTRA

Citation Formats

Meshcheryakov, A. I., E-mail: meshch@fpl.gpi.ru, and Vafin, I. Yu., E-mail: ildar@fpl.gpi.ru. Determination of the plasma effective charge from the soft X-ray spectrum and plasma conductivity at the L-2M stellarator after boronization of the vacuum chamber. United States: N. p., 2016. Web. doi:10.1134/S1063780X16070084.
Meshcheryakov, A. I., E-mail: meshch@fpl.gpi.ru, & Vafin, I. Yu., E-mail: ildar@fpl.gpi.ru. Determination of the plasma effective charge from the soft X-ray spectrum and plasma conductivity at the L-2M stellarator after boronization of the vacuum chamber. United States. doi:10.1134/S1063780X16070084.
Meshcheryakov, A. I., E-mail: meshch@fpl.gpi.ru, and Vafin, I. Yu., E-mail: ildar@fpl.gpi.ru. 2016. "Determination of the plasma effective charge from the soft X-ray spectrum and plasma conductivity at the L-2M stellarator after boronization of the vacuum chamber". United States. doi:10.1134/S1063780X16070084.
@article{osti_22614101,
title = {Determination of the plasma effective charge from the soft X-ray spectrum and plasma conductivity at the L-2M stellarator after boronization of the vacuum chamber},
author = {Meshcheryakov, A. I., E-mail: meshch@fpl.gpi.ru and Vafin, I. Yu., E-mail: ildar@fpl.gpi.ru},
abstractNote = {Boronization of the vacuum chamber wall results in a considerable change in the composition of the plasma generated in working pulses of the L-2M stellarator and, accordingly, in the plasma effective charge. The paper presents results of measurements of the plasma effective charge carried out by two methods in the ohmic heating mode: from the data on the plasma conductivity and from the soft X-ray spectrum of plasma emission. Comparison of the values of the plasma effective charge obtained by these two methods makes it possible to determine the conditions in which the two values are in good agreement. Under these conditions, the plasma effective charge can be correctly estimated from spectral measurements.},
doi = {10.1134/S1063780X16070084},
journal = {Plasma Physics Reports},
number = 7,
volume = 42,
place = {United States},
year = 2016,
month = 7
}
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