Lifetime measurements of the C-1 Pi(1) and B-3 Pi(1) electronic states of InCl by laser induced fluorescence

The laser-induced fluorescence spectra of the InCl molecule over the range 266.5-287.0 nm and 332.0-373.0 nm are reported and assigned to C(1)Pi(1)-X( 1)Sigma(+), B(3)Pi(1)-X(1)Sigma(+), or A (3)Pi(0)-X(1)Sigma(+) transitions. It is the first time those radiative lifetimes of the C(1)Pi(1) and B(3)Pi (1) states have been measured by laser-induced fluorescence. The collision- free fluorescence radiative lifetime tau(0) = 353(7) ns and a quenching rat e constant k(Q) = 1.985. (0.010) x 10(10) cm(3) molecule(1) s(1) are propos ed for B(3)Pi(1) and tau(0) = 11(1) ns for C(1)Pi(1) states. From the radia tive lifetime tau(0) and the Franck-Condon factors q(v'v'') for the v'-v" t ransitions, the electronic transition moments \R-e\(2) of the B(3)Pi(1) and C(1)Pi(1) states have been obtained.