Accession Number : AD0702077

Title :   INVESTIGATIONS OF IONIC SPECIES IN HIGH PRESSURE CESIUM DISCHARGES.

Descriptive Note : Annual rept. no. 4, 1 Mar 69-28 Feb 70,

Corporate Author : MINNESOTA UNIV MINNEAPOLIS INST OF TECH

Personal Author(s) : Chanin,L. M.

Report Date : 28 FEB 1970

Pagination or Media Count : 32

Abstract : Ionic sampling studies have been performed on cesium plasmas using dc as well as rf excitation. For dc discharges sampling was undertaken through both the anode and cathode. Measurements have been made for normalized pressures from 0.0001 to 0.1 Torr. The major ions observed were cs(+), Cs2(+) and Cs3(+). For a fixed cesium pressure, I(Cs2(+)/I(Cs(+)) and I(Cs3(+))/(Cs(+)) in general, decreased with increasing values of the total ion signal. At low pressure about 0.0001 Torr Cs(+) was dominant, however about 0.1 Torr the ion signals of Cs2(+) were comparable to those of Cs(+). The ion current signals of Cs3(+), increase rapidly with cesium pressure. (Author)

Descriptors :   (*CESIUM, *GAS DISCHARGES), (*PLASMA MEDIUM, CESIUM), (*THERMIONIC EMISSION, CESIUM), MASS SPECTROSCOPY, IONIZATION POTENTIALS, RADIOFREQUENCY

Subject Categories : Atomic and Molecular Physics and Spectroscopy
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE