On the effect of a longitudinal magnetic ???eld on oscillatory characteristics of a subnormal region in discharge in argon

摘要

Oscillating nature of current pulses under d.c. excitation in subnormal region with longitudinal magnetic ???eld at pressure range 0.20 torr to 0.85 torr have been studied. The frequency, bandwidth, peaka€“peak voltage, cut-off current and rise time of the current pulses have been observed with pressure, average tube current and magnetic ???eld. A study of these oscillograms in magnetic ???eld, average tube current and pressure are presented. The probable mechanism for the generation of oscillation based on space-charge ???eld modi???cation with magnetic ???eld is discussed.