Electron-ion recombination measurements in the flowing afterglow

Abstract

Electron-ion recombination rates (T approximately=300 K) have been measured in a flowing afterglow tube, using an axially traversable ion sampling mass spectrometer and floating double probe. The values are O2+:1.9+or-0.5*10-7 cm3 s-1, N2+:2.2+or-0.4*10-7 cm3 s-1, NO+:3.4+or-0.6*10-7 cm3 s-1, and CO2+:3.4+or-1.2*10-7 cm3 s-1.