Accession Number : ADA290164

Title :   Studies of Energy Transfer Processes of Relevance to Chemically and Optically Pumped Lasers.

Descriptive Note : Final rept. 1 Nov 91-31 Oct 94,

Corporate Author : EMORY UNIV ATLANTA GA SCHOOL OF DENTISTRY

Personal Author(s) : Heaven, Michael C.

PDF Url : ADA290164

Report Date : 27 DEC 1994

Pagination or Media Count : 36

Abstract : The relaxation dynamics of vibrationally excited levels of 12(X) are of relevance to the chemical oxygen iodine laser (COIL). Rotational and vibrational energy transfer rate constants have been measured for selected levels with v">20. The collision partners He, Ar, I2,Cl2, 02, and H20 were investigated. A numerical model that relates state-to-state energy transfer rate constants to I2+ deactivation processes in COIL has been developed. The results for H2O show that the true deactivation rate constant is about an order of magnitude smaller than the estimate used in current computer simulations of COIL systems. Energy transfer from 02(a1A) and I(2P1/2) to 12(X) has been investigated. The nascent vibrational distribution resulting from I(2Pl/2)+I2(X) collisions was characterized, and improved spectroscopic constants for the D state of I2 are reported. Jet-cooling and emission spectroscopy techniques have been used to characterize the D'(2)-A'(2) and Beta(l)-A(l) ion-pair to valence state transitions of iodine monobromide.

Descriptors :   *LASER PUMPING, *ENERGY TRANSFER, *CHEMICAL LASERS, *OPTICAL PUMPING, MATHEMATICAL MODELS, COMPUTERIZED SIMULATION, VIBRATION, SPECTROSCOPY, DYNAMICS, RATES, OXYGEN, CONSTANTS, IODINE, VALENCE, RELAXATION, TRANSITIONS, EMISSION SPECTROSCOPY, EQUATIONS OF STATE, DEACTIVATION.

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE