Temperature Dependence of Electron Attachment inI2Vapor

Abstract

The temperature dependence of electron attachment in ${\mathrm{I}}_2$ vapor has been measured over the temperature range from 253 to 467°K. The attachment coefficient was found to increase with temperature over the range studied, varying from 0.9 × ${10}^{-10\mathrm{}}$ to 4.2 × ${10}^{-10\mathrm{}}$ ${\mathrm{cm}}^3$/sec. Studies involving selective heating of the electrons indicate that for a gas temperature of 298°K the attachment coefficient increases from 1.8 × ${10}^{-10\mathrm{}}$ to ${\mathrm{cm}}^3$/sec as the electron thermal energy was increased from 0.04 to about 0.27 eV.