Electrical Breakdown of Gases Between Coaxial Cylindrical Electrodes in Crossed Electric and Magnetic Fields


Autoria(s): Govinda Raju, GR; Gurumurthy, GR
Data(s)

01/10/1977

Resumo

Sparking potentials have been measured in nitrogen and dry air between coaxial cylindrical electrodes for values of n = R2/R1 = approximately 1 to 30 (R1 = inner electrode radius, R2 = outer electrode radius) in the presence of crossed uniform magnetic fields. The magnetic flux density was varied from 0 to 3000 Gauss. It has been shown that the minimum sparking potentials in the presence of the crossed magnetic field can be evaluated on the basis of the equivalent pressure concept when the secondary ionization coefficient does not vary appreciably with B/p (B = magnetic flux density, p = gas pressure). The values of secondary ionization coefficients �¿B in nitrogen in crossed fields calculated from measured values of sparking potentials and Townsend ionization coefficients taken from the literature, have been reported. The calculated values of collision frequencies in nitrogen from minimum sparking potentials in crossed fields are found to increase with increasing B/p at constant E/pe (pe = equivalent pressure). Studies on the similarity relationship in crossed fields has shown that the similarity theorem is obeyed in dry air for both polarities of the central electrode in crossed fields.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/43115/1/ELECTRICAL_BREAKDOWN.pdf

Govinda Raju, GR and Gurumurthy, GR (1977) Electrical Breakdown of Gases Between Coaxial Cylindrical Electrodes in Crossed Electric and Magnetic Fields. In: IEEE Transactions on Electrical Insulation, EI-12 (5). pp. 325-334.

Publicador

IEEEhttp://eprints.iisc.ernet.in/cgi/users/home?screen=EPrint::Edit&eprintid=43115&stage=core#t

Relação

http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4080452&tag=1

http://eprints.iisc.ernet.in/43115/

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Tipo

Journal Article

PeerReviewed