Ionization, attachment and negative ion reactions in carbon dioxide

Abstract

From measurements of the relative abundances of O- and CO3- ions produced in carbon dioxide by electron attachment and subsequent ion-molecule reactions, and from current-growth data, values of the primary ionization coefficient, attachment coefficient and rate coefficient for the reaction O-+2CO2 to CO3-+CO2 have been obtained for 60*10-17<E/N<152*10-17 V cm2 at gas number densities N between 0.2 and 5.0*1016 cm-3.