K. Wojciechowski, M. Rosa, A. Jówko, M. Foryś
Department of Chemistry, Agricultural and Pedagogical University,
08-110 Siedlce, 3 Maja 54, Poland
The kinetics and mechanism of energy transfer from Xe(3P1, 3P2) atoms
to CCl4 and HCl molecules have been investigated by measuring XeCl (B, C) ®
XeCl (X, A) fluorescence intensity under steady-state conditions. Steady-state analysis
of the dependence of fluorescence intensity on the xenon and additive pressure shows that beside the
two-body excitation transfer the third-order reaction occurs:
Xe(3P1, 3P2) + RCl + Xe ®
Products
with the rate constants (2.0 ± 0.2) * 10-28 and (2.2 ± 0.3) * 10-27 cm6s-1
for CCl4 and HCl, respectively. In the case of CCl4, the XeCl* excimer is formed with
efficiency of ca. 20%. The initial concentration ratio of XeClB and XeClC
formed in the two-body energy transfer from the Xe(3P1) atom to the HCI molecule
is equal to 0.54 and efficiency of the XeCI* excimer formation is equal to 0.03.