| || Influence of Surface Resistivity and Temperature on Variation with Time of Current Pulses in Air at Optimum Pressure
Author : Pimpale, S.G.
Source : Defence Science Journal ; Vol:27(2) ; 1977 ; pp 53-62
Subject : 53 Applied Physics
Keywords : Current pulses;Ionizing zone;Ozonizers
Abstract : The variation of discharge current pulses with the surface nature of electrodes has been investigated by producing discharge in the intense ionizing zone of two ozonizers (A&B) containing pure, dry air at a pressure of 4 & 10mm of mercury respectively. The course of reaction in the tube A showed that the periodic rise and fall of discharge counts through a series of recurrences whose amplitude varied randomly. During this reaction, steady potential, temperature of the electrolytic bath, counting time and pulse height were kept fixed. The phenomenon obtained for both the tubes is produced within a critical range of conditions. The results have been interpreted on the basis of activated adsorption at a temperature of 90 degree and 100 degree Centigrade and discussed on the theoretical grounds of change of surface resistivity upon the glass walls. Use of different coatings on annular surface in the same system with appropriate levels of electrolytic solution for a definite value of height-pulses and temperature, etc. shows significant variations in the discharge counts.
| || Pulse Height Spectral Studies of Ozonizer Discharges in Argon at a Moderate Pressure and the Associated Joshi Effect
Author : Pimpale, S.G.
Source : Defence Science Journal ; Vol:26(4) ; 1976 ; pp 157-160
Subject : 536 Thermodynamics
Keywords : Applied potentials;Current pulses;Theoretical explanation
Abstract : The effect of light has been observed in the variation of discharge counts with pulse amplitude during d.c.. discharges through argon in a fresh and an aged Siemen's vessels. The pulse height spectra of the discharge for applied potentials of 1.75 and 1.82 kV (r.m.s.) have been measured in dark and under irradiation. The number of current pulses varies periodically with increasing amplitude both in the low and plateau-like intermediate amplitude regions; finally the number of pulse drops rapidly to negligible value in the high amplitude regions. The theoretical explanation for the various observed features in the plots has been attempted on the properties of adsorbed layers on the glass walls of the discharge tube.