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

Journal Article · Sun Dec 15 00:00:00 EST 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4837535· OSTI ID:22218378

Demkin, V. P.; Mel'nichuk, S. V.; Borisov, A. V.; Bardin, S. S. ^[1]

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1. National Research Tomsk State University, 36, Lenin Ave., 634050 Tomsk (Russian Federation)

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.

• OSTI ID: 22218378
• Journal Information: Physics of Plasmas, Vol. 20, Issue 12; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

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