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Title: Investigation of the spatiotemporal characteristics of the electric field in the Ne-H{sub 2} plasma of a beam-type high-voltage pulsed discharge

In the present work, the spatiotemporal dynamics of the electric field E(x, t) of plasma produced by a beam-type high-voltage pulsed discharge is investigated. The electric field strength E(x, t) in an accelerating gap and in a plasma flare was determined from the measured Stark splitting of the H{sub β} hydrogen line. The obtained dependence E(x, t) was used to calculate the electron distribution function and the spectral line intensities in the accelerating gap and in the plasma flare by the method of statistical modeling. The calculated population of He atomic states excited by electron impact and their comparison with the measured spectral line intensities I(λ, x, t) demonstrate that a reverse electric field retarding the electron motion and leading to electron beam degradation must be present in the plasma flare near the grid. Measurement of the field strength from the Stark splitting of the H{sub β} line demonstrates that it can reach considerable values.
Authors:
; ; ;  [1]
  1. National Research Tomsk State University, 36, Lenin Ave., 634050 Tomsk (Russian Federation)
Publication Date:
OSTI Identifier:
22218378
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 12; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 74 ATOMIC AND MOLECULAR PHYSICS; CHARGED-PARTICLE TRANSPORT; COMPARATIVE EVALUATIONS; DISTRIBUTION FUNCTIONS; ELECTRIC DISCHARGES; ELECTRIC FIELDS; ELECTRIC POTENTIAL; ELECTRON BEAMS; ELECTRON-ION COLLISIONS; ELECTRONS; HYDROGEN; NEON; PLASMA; PLASMA DIAGNOSTICS; PLASMA PRODUCTION; STARK EFFECT