Low-pressure gas breakdown in uniform dc electric field
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Дата
2000-11
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Номер ISSN
Назва тому
Видавець
JOURNAL OF PHYSICS D: APPLIED PHYSICS
Анотація
This paper studies in experiment and theory the breakdown of argon, nitrogen, air
and oxygen in a uniform dc electric field at different discharge gaps L, discharge tube radii R and cathode materials. At arbitrary geometric dimensions of the cylindrical discharge vessel and cathode materials the ratio of the breakdown electric field value to the gas pressure p at the minimum of the breakdown curves is shown to remain constant, (Edc/p)min ≈ constant.
A modified breakdown law for the low-pressure dc discharge Udc = f (pL, L/R) is obtained. That is, the breakdown voltage Udc is shown to depend not only on the product pL, but also on the ratio L/R. A method is presented enabling one to predict a dc breakdown curve in the cylindrical discharge vessel possessing arbitrary L and R values from the measured data on the dc breakdown.
Опис
Ключові слова
plasma physics, gas discharges
Бібліографічний опис
J. Phys. D: Appl. Phys. 33 (2000) 2722–2730.