Electronic-to-vibrational energy transfer from Br* to CO2 and electronic-to-vibrational laser feasibility studies. Master's thesis

Technical Report · Sun Nov 01 00:00:00 EST 1992

OSTI ID:7066536

Katapski, S M

The energy transfer mechanism from photo-excited bromine atoms (Br(2P sub 1/2)) to C02 is investigated in a pulsed fluorescence experiment. An excimer-pumped pulsed dye laser operating at 480 nm is used to photolyze molecular bromine, resulting in the creation of one excited state bromine atom, Br(2P sub 1/2), and one ground state atom, Br(2P sub 3/2). The electronically-excited bromine atoms (referred to as Br*) collide with and excite vibrational modes in the ground electronic state of CO2. Measurements are made of the Br* lifetimes and associated quenching processes, and the electronic-to-vibrational (E yields V) energy transfer rate from Br* to CO2. The feasibility of subsequent stimulated emission from the CO2 on the (101)-(100)(4.3 micron) transition is studied, and attempts are made to achieve lasing. Limitations of the experimental apparatus prevented achieving stimulated emission on the 4.3 micron transition. Recommendations are made for improvements in the analysis and apparatus for further research.... Bromine, Spin-orbit relaxation, Quenching, E-V energy transfer.

• Research Organization: Air Force Inst. of Tech., Wright-Patterson AFB, OH (United States). School of Engineering
• OSTI ID: 7066536
• Report Number(s): AD-A-258850/7/XAB; AFIT/GEP/ENP-92D-07
• Resource Relation: Other Information: Master's thesis
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
BROMINE IONS
ENERGY TRANSFER
CARBON DIOXIDE
DYE LASERS
FEASIBILITY STUDIES
EMISSION
ENERGY LEVELS
EXCITATION
FLUORESCENCE
QUENCHING
STIMULATED EMISSION
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHARGED PARTICLES
ENERGY-LEVEL TRANSITIONS
IONS
LASERS
LIQUID LASERS
LUMINESCENCE
OXIDES
OXYGEN COMPOUNDS
426002* - Engineering- Lasers & Masers- (1990-)