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BREAKDOWN OF A RADIO-FREQUENCY DISCHARGE IN A NONRESONANT MAGNETIC FIELD

Journal Article · · Canadian Journal of Physics
DOI:https://doi.org/10.1139/p63-143· OSTI ID:4646774
The breakdown of a radio-frequency discharge excited by a radio- frequency voltage of frequency lying between 7 and 10 Mc is studied in a cylindrical discharge tube (length 10 cm) in air and in nitrogen with the pressure varying between 10 and 300 mu , in the presence of a nonresonace magnetic field varying from 0 to 80 gauss. The breakdown voltage is found to be greater than when no magnetic field is present for all values of pressure, and the pressure at which the breakdown voltage becomes minimum increases with the application of the magnetic field. A theory regarding radio-frequency discharge is modified by the introduction of effects due to the magnetic field, and an expression for the breakdown voltage and the pressure at which the breakdown voltage becomes minimum is deduced. The expression explains the observed results, and quantitative disagreement is ascribed to the uncertainty in the numerical values of the molecular constants introduced in the theory. The effect of attachment in the case of air is calculated within some limitations, and it is observed that when attachment is taken into consideration, the calculated theoretical values are in better agreement with the observed experimental results. (auth)
Research Organization:
Univ. of North Bengal, Siliguri, Darjeeling, India
Sponsoring Organization:
USDOE
NSA Number:
NSA-17-037671
OSTI ID:
4646774
Journal Information:
Canadian Journal of Physics, Journal Name: Canadian Journal of Physics Journal Issue: 9 Vol. 41; ISSN 0008-4204
Publisher:
Canadian Science Publishing
Country of Publication:
Country unknown/Code not available
Language:
English

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