I. Stefanovic et Zl. Petrovic, VOLT-AMPERE CHARACTERISTICS OF LOW CURRENT DC DISCHARGES IN AR, H-2, CH4 AND SF6, JPN J A P 1, 36(7B), 1997, pp. 4728-4732
In this paper we show new results for a wide range of characteristics
of low current diffuse (Townsend-dark discharge regime) discharges in
Ar, H-2, CH4, SF6. The measured observables include: volt-ampere chara
cteristics, ranges of free running oscillations, frequency and damping
of induced oscillations and we also determine the negative differenti
al resistance (the negative differential voltage to current ratio). Th
e measurements were performed for pressures between 0.027 and 1 Torr a
nd for distances between electrodes in the range from 1 to 3 cm.