Measurements of the Electronic Recombination Coefficient in a Helium Plasma Jet

Abstract

The three-body recombination coefficient has been measured in a partially ionized plasma jet mainly by using a spectroscopic technique. Experimental data were treated by the consideration that the net number of particles that were deexcited across a minimum in the total rate of deexcitation of atoms was substantially equal to the number of electronic recombinations. Experimental results are in good agreement with other investigated values and show $T_e^{-4.4\mathrm{}}$ dependence of the recombination coefficient.