Observation of Relative Population Change in the 3P0 and 3P2 States for Ar Glow Discharge Formation

Abstract

The formation ratio of the two spin-orbit states, 3P0 / 3P2, of the metastable argon, Ar*, was investigated by the glow discharge of a pulsed Ar supersonic beam. The 3P0 / 3P2 ratio decreased with the increase of the glow discharge potential Vg, by which the electron bombardment initiates the discharge. The observed Vg-dependence clearly showed an inverse behavior against Vg as compared with that in the conventional electron impact by low beam densities.

2D-Measurement of Penning Ionization Cross Section upon Molecular Orientation and Collision Energy in Ar(3P2,0) + CHCl3 Crossed Beam Reaction

“…Since the 3 P 0 state has a higher energy by 0.175 eV than the 3 P 2 state, the collision energy dependence of the cross section is expected to be shifted by this amount. The relative population of 3 P 0 to 3 P 2 , i.e., 3 P 0 / 3 P 2 , had been determined to be 0.02 for our beam source . From this result, the contribution from 3 P 0 is expected to be negligibly small.…”

“…The relative population of 3 P 0 to 3 P 2 , i.e., 3 P 0 / 3 P 2 , had been determined to be 0.02 for our beam source. 12 From this result, the contribution from 3 P 0 is expected to be negligibly small. In other word, it is a good assumption that the present result can be attributed to the reaction from the 3 P 2 state.…”