Transient gain-versus-absorption laser probing of spin-orbit states, kinetics and dynamicsThe spin-orbit populations of excited (2P1/2) and ground (2P3/2) state Br atoms at 2714 nm and I atoms at 1315 nm are examined using a tunable F-center laser and a diode laser. The transient laser gain-versus-absorption measurements are utilized to estimate quantum yields of the spin-orbit states in the photodissociation of Br- and I-containing compounds; the continuum yields for Br2 are investigated in terms of temperature. The collisional release, Doppler velocity effects, and differing reactivity of the spin-orbit excited and ground state atoms are studied. It is noted that the transient gain versus absorption technique is applicable to the analysis of kinetic phenomena due to its high sensitivity and excellent time resolution.
Document ID
19870043851
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Smedley, John E. (Joint Inst. for Lab. Astrophysics Boulder, CO, United States)
Hess, Wayne P. (Joint Inst. for Lab. Astrophysics Boulder, CO, United States)
Haugen, Harold K. (Joint Inst. for Lab. Astrophysics Boulder, CO, United States)
Leone, Stephen R. (Joint Institute for Laboratory Astrophysics; Colorado, University Boulder, United States)