STUDY ON CHEMILUMINESCENCE FROM REACTIONS OF F-ATOM WITH BROMINE SUBSTITUTE METHANE

Visible chemiluminescence in the region 300 approximately 900 nm was m easured from reactions of F(2P) atoms with CH3Br, CH2Br2 and CHBr2 at various pressures using crossed molecular beam setup. Emissions were o bserved from vibrationally excited HF+(X) and from electronically exci ted Br2(A or B), BrF(B), CHF(A) and CH(A). The rotational temperature of HF(X) was obtained to be 480K. The relative vibrational populations of Br2(B) and BrF(B) were solved by computer simulated spectrum. The reaction mechanism was discussed: the primary reaction is mainly the c hannel of H abstraction, and multistage processes produce electronical ly activated molecules.