The chemiluminescence in the visible region (400~900 nm) was measured from the reaction of F(2P) atoms with CH3CN and CH3CH2ON under low and high pressure conditions. Emissions were observed from vibrationally excited HF(X) and from electronically excited CN(A) and CH(A,B). The Franck-Condon factors of CN(A甔) transitions was calculated, and the relative vibrational population of CN(A) was obtained. The formation mechanism of CN(A2II) was suggested by the dissociation of the activated mol. like (CH2CNF).

Key words: FLUORINE, EXCITED STATE, CHEMILUMINESCENCE REACTION, ELECTRON TRANSITION, GROUND STATE, GAS PHASE REACTION, ACETONITRILE, PROPANENITRILE