Neutralhyphen;stabilized electronndash;ion recombination in ambient helium gas

摘要

We have measured rates of recombination of electrons with simple molecular ions in the presence of helium at densities from 2.5times;1019to 2.9times;1020cmminus;3at reduced temperatures of 77, 125, and 150 K. The results agree surprisingly well with the neutral, collisional recombination mechanism proposed by Bates and Khare for atomic ions recombining in plasmas of high neutral density.