EXPERIMENTAL STUDY OF THE LEVEL-TO-LEVEL ROTATIONALLY INELASTIC TRANSITION RATES OF IODINE MONOFLUORIDE DURING COLLISIONS WITH NOBLE GASES.

Abstract

Much accurate information has recently become known about iodine monofluoride (IF). With the information available, it was possible to begin a study of the state-to-state rotational energy transfer (RET) during collisions with noble gases. Ground-state IF (X SIGMA ** plus ) was generated in a flow tube reactor and excited by means of a narrow beam ring dye laser to the B**3 pi (0** plus ) state. The fluorescence from the B yields X transition was observed and was used to determine thermally averaged rate constants and cross-sections for state-to-state RET during collisions with He, Ar, and Kr.