Electrode breakdown in magnetohydrodynamic plasmas: stability analysis

Stability analysis has been carried out for current conduction in magnetohydrodynamic conditions using the perturbation approach. Conditions for the onset of instability at the electrode surface and the corresponding critical values of current density and electric field have been obtained. Experimen...

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Bibliographic Details
Published in:Journal of applied physics 1989-08, Vol.66 (4), p.1610-1617
Main Authors: SATHEESH KUMAR, A, GUPTA, B
Format: Article
Language:English
Subjects:
Exact sciences and technology
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma devices
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Summary:Stability analysis has been carried out for current conduction in magnetohydrodynamic conditions using the perturbation approach. Conditions for the onset of instability at the electrode surface and the corresponding critical values of current density and electric field have been obtained. Experimental values of the critical cathode potential drop have been used to obtain the work function of the composite surface (formed due to the deposition of seed material at the electrode) as a function of the electrode temperature.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.344374