DETERMINATION OF BASIC QUANTITIES DURING GLOW-TO-ARC TRANSITION IN A POSITIVE POINT-TO-PLANE DISCHARGE

被引:46
作者
BASTIEN, F
MARODE, E
机构
[1] Lab. de Phys. des Decharges, Ecole Superieure d'Electricite, 91190 Gif sur Yvette, Plateau du Moulon
关键词
D O I
10.1088/0022-3727/12/2/010
中图分类号
O59 [应用物理学];
学科分类号
摘要
The discharge is operated in oxygen with a 1 cm gap between a positive point and a plane at a pressure near 300 Torr. The discharge has been found to have a behaviour similar to that in atmospheric air. By introducing traces of hydrogen it has been possible to study the Halphaand Hbeta lines broadening which is mainly connected to the Stark effect. However, due to the presence of a macroscopic field the usual theory does not apply, i.e. it is shown that the Stark profile is related to the electron current density j rather than to the electron density Ne. The current density j is derived and from total current i a characteristic radius r0 of the filamentary discharge is obtained. A value of the macroscopic field F e is then determined from a numerical simulation of the discharge, leading in turn to the electron density. All these measurements are time resolved and are given as a function of time during the glow-to-arc transition. Typical values are j approximately 3*103 A cm-2, r0 approximately 20 mu m, Ne approximately 1015 cm-3. Some indications concerning the primary streamer, the nature of the discharge plasma and the glow to arc transition are derived from these measurements.
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页码:249 / 263
页数:15
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共 29 条
  • [1] ALLEN CW, 1973, ASTROPHYSICAL QUANTI, P50
  • [2] FORMATION OF SMALL SPARKS
    BARRETO, E
    JURENKA, H
    REYNOLDS, SI
    [J]. JOURNAL OF APPLIED PHYSICS, 1977, 48 (11) : 4510 - 4520
  • [3] STARK-BROADENING OF HALPHA AND HBETA IN IONIZED-GASES WITH SPACE-CHARGE FIELD
    BASTIEN, F
    MARODE, E
    [J]. JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, 1977, 17 (04) : 453 - 469
  • [4] BASTIEN F, 1977, J PHYS APPL, V12, P7
  • [5] BASTIEN F, 1977, THESIS ORSAY
  • [6] BASTIEN F, 1976, J PHYS D, V9, pL115
  • [7] COMPUTER SIMULATION OF RAPIDLY DEVELOPING GASEOUS DISCHARGES
    DAVIES, AJ
    DAVIES, CS
    EVANS, CJ
    [J]. PROCEEDINGS OF THE INSTITUTION OF ELECTRICAL ENGINEERS-LONDON, 1971, 118 (06): : 816 - &
  • [8] A MODEL FOR STREAMER PROPAGATION
    DAWSON, GA
    WINN, WP
    [J]. ZEITSCHRIFT FUR PHYSIK, 1965, 183 (02): : 159 - &
  • [9] DELCROIX JL, 1966, PHYSIQUE PLASMAS, V1, P92
  • [10] Dutton J., 1975, Journal of Physical and Chemical Reference Data, V4, P577, DOI 10.1063/1.555525