Reactions of Highly Excited Atoms with Molecules A**+BC→A⁺+B+C⁻

Reactions of highly excited atoms (A ** ) with molecules (BC) {aligned} A**+BC{→}A⁺+B+C⁻, {eq1} {aligned} are studied. It is theoretically shown that the cross section for (1) can be approximately expressed in terms of that for dissociative attachment of electrons to molecules BC, namely, {aligned} e+BC{→}B+C⁻. {aligned} The rate constants and the angular distributions of the products for some reactions including {aligned} {Kᵣ**+CCl₄→Kᵣ⁺}+CCl₃+Cl⁻, {eq2} {aligned} are predicted. The rate constant for reaction (2) is found to be of the order of the magnitude 10 -7 cm 3 /sec. Together with the results of the previous papers (M. Matsuzawa: J. chem. Phys. 55 (1971) 2685; J. Phys. Soc. Japan 32 (1972) 1088) it is pointed out that the measurements of reactions of highly excited atoms with molecules give useful information on the inelastic scattering of a slow electron by the molecules.