The deactivation processes of Cd(53P2) by H 2 and D2 were studied by employing pulsed laser techniques. The cross sections for the intramultiplet relaxation to produce Cd(53P1) and Cd(53P0) were determined as follows: Cd(53P2) + H2 → Cd(53P1) + H2; 6.3, Cd(53P 2) + H2 → Cd(53P0) + H 2; 1.0, Cd(53P2) + D2 → Cd(53P1) + D2; 4.4, Cd(53P 2) + D2 → Cd(53P0) + D 2; 0.9, in units of 10-16 cm2 at 630 K. The cross sections for the overall deactivation of Cd(53P2) by H2 and D2 were determined to be 9.8 × 10 -16 cm2 and 6.9 × 10-16 cm2, respectively. These values are compared with the calculated results based on a semiclassical curve crossing mechanism. It is suggested that electronic-to-rotational energy transfer without sharp resonances plays an important role in the deactivation of Cd(53P2).
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry