Original scientific paper

Measurements of the transition current from normal to abnormal neon glow discharge

Emil Barna ; The Bucharest University, Faculty of Physics, P.O.B. MG-11, 76900 Bucharest - Magurele, Romania
Vania Covlea ; The Bucharest University, Faculty of Physics, P.O.B. MG-11, 76900 Bucharest - Magurele, Romania
Costel Biloiu ; The Bucharest University, Faculty of Physics, P.O.B. MG-11, 76900 Bucharest - Magurele, Romania
Emil Toader ; The Bucharest University, Faculty of Physics, P.O.B. MG-11, 76900 Bucharest - Magurele, Romania

Abstract

A simple technique based on a non-linear effect of self-excited ionization waves is used to measure the transition current It from normal glow discharge to an abnormal glow discharge in neon. The experimental results are used further to calculate the similarity parameter jn/p2, where jn is the normal current density and p is the neon gas pressure. The D.C. neon glow discharge is sustained in a large-diameter cylindrical glass tube (D = 10 cm) over the pressure range from 13 to 133 Pa (0.1 to 1.0 Torr). The results show that It has a quadratic dependence on p, and the average value of the similarity parameter jn/p2 is 453 pA/(cm2Pa2) (i.e. 8.05 mA/(cm2Torr2)).

Keywords

Hrčak ID:

299937

URI

https://hrcak.srce.hr/299937

Publication date:

1.10.1997.

Article data in other languages: croatian

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