No abstract

Semiclassical model calculations of rate constants for Rydberg-atom destruction through electron transfer in collisions between K(nd) atoms and CF3I and SF6 are presented. The calculated rate constants are in good agreement with experimental data, but at low-to-intermediate values of n fall below those expected on the basis of the simple free-electron model. Reasons for this apparent discrepancy are discussed.

Rate constants for Rydberg atom destruction and for free SF−6 ion formation in K(nd)–SF6 collisions at intermediate values of n are reported. The data show that the rate constants for collisional destruction are consistent with those expected on the basis of Rydberg electron attachment to SF6, but that only a fraction of such events lead to an observable SF−6 ion. This fraction can, however, be significantly increased by application of an external electric field.