Electrical breakdown at low pressure in the presence of a weak magnetic field

Details Electrical breakdown at low pressure in the presence of a weak magnetic field Electrical breakdown at low pressure in the presence of a weak magnetic field

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95.6145a&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, May 1, 1990, p. 6145-6153. Research supported by SDIO.

Physics

16

Electrical Faults, Low Pressure, Magnetic Fields, Plasma Interaction Experiment, Space Plasmas, Trapped Particles, Electric Discharges, Electric Fields, Gas Pressure, High Voltages, Test Chambers

Scientific paper

Electron trapping in crossed electric and magnetic fields is an important mechanism by which electrical discharges can develop in low pressure gases. Discharges produced by this mechanism are observed around a spherical anode in two space simulation chambers, namely the Space Plasma Interaction Experiment at the University of Maryland, and the NASA-Lewis B-2 chamber. In the B-2 chamber, the breakdown takes the form of a runaway discharge with spherical topology, limited only by the ability of the power supply to provide the current. In the SPIE chamber this type of discharge also occurs, in addition to a low current toroidal discharge which is observed at higher magnetic fields.

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