Absolute Electron-Impact Cross Section for Stable Anion Formation from CF{sub 3}Cl Isolated in Solid Kr

We report the first measurements on the electron energy dependence of the total cross section for stable anion formation within a solid lattice. Resonant attachment of electrons to CF{sub 3}Cl isolated within a multilayer Kr film produces CF{sub 3}Cl {sup -} and Cl{sup -} with a maximum cross section of 1.1{times}10{sup -16} cm{sup 2} at {approximately}0.7 eV , which is greater than that for the same process at the Kr surface and in the gas by a factor of 25 and 64, respectively. These enhancements are primarily due to the effects of induced polarization on the transient CF{sub 3}Cl {sup -} ion. {copyright} {ital 1997} {ital The American Physical Society}