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High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes)

An International Journal

ISSN for PRINT: 1093-3611

Institutional price:	$604.00
Issues per year:	4

Best Paper Award Selection - Editorial Board Site

2004, Volume8

169 pages

DOI: 10.1615/HighTempMatProc.v8.i4

Issue price - $144.00

HIGH-TEMPERATURE ARC IN DENSE GAS

A. A. Bogomaz
Institute of Problems of Electrophysics of Russian Academy of Sciences (IPE RAS), Dvortsovaya nab. 18, St.-Petersburg, 191186, Russia

A. V. Budin
Institute of Problems of Electrophysics of Russian Academy of Sciences (IPE RAS), Dvortsovaya nab. 18, St.-Petersburg, 191186, Russia

M. E. Pinchuk
Institute of Problems of Electrophysics of Russian Academy of Sciences (IPE RAS), Dvortsovaya nab. 18, St.-Petersburg, 191186, Russia

Ph. G. Rutberg
Institute of Problems of Electrophysics of the Russian Academy of Sciences, Dvortsovaya nab. 18, St.-Petersburg, Russia

A. F. Savvateev
Institute of Problems of Electrophysics of Russian Academy of Sciences (IPE RAS), Dvortsovaya nab. 18, St.-Petersburg, 191186, Russia

ABSTRACT

The investigations of the powerful electric discharge in high density hydrogen were continued in IPE RAS. In these experiments the influence of discharge current magnitude, current rise rate and initial particle density on arc temperature was investigated. These experiments were performed under the following conditions: charge voltage of the capacitive energy supply — 8.0−14.0 kV, stored energy — 140−450 kJ, discharge current — 200−600 kA, current rise rate — 10⁹−10¹⁰ A/s. The maximum particle density nmax, achieved just before the discharge was about 2.0×10²² cm⁻³. Arc temperature was calculated on the basis of measured electric parameters of arc and bright temperature of its outer layer.
It was revealed that increasing in initial particle density, discharge current magnitude and current rise rate leads to the reducing of arc diameter that results in increasing of temperature of the discharge channel. Obtained experimental data permits to define the main parameters of the discharge: temperature of arc channel, plasma conductivity and density of charged particles in the arc channel. It was estimated that temperature of arc central zone is achieved 3×10⁵ K at the specified initial conditions.