Electronic-to-Vibrational (E → V) Energy Transfer from Br* to CO₂ and Electronic-to-Vibrational (E → V) Laser Feasibility Studies

Author

Steven M. Katapski

Date of Award

11-1992

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Engineering Physics

First Advisor

Glen P. Perram, PhD

Abstract

The energy transfer mechanism from photo-excited bromine atoms (Br(²P_½)) 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_½), and one ground state atom, Br(²P_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.

AFIT Designator

AFIT-GEP-ENP-92D-07

DTIC Accession Number

ADA258850

Comments

The author's Vita page is omitted.

Plain text title form: Electronic-to-Vibrational Energy Transfer from Br* to CO2 and Electronic-to- Vibrational Laser Feasibility Studies

Recommended Citation

Katapski, Steven M., "Electronic-to-Vibrational (E → V) Energy Transfer from Br* to CO₂ and Electronic-to-Vibrational (E → V) Laser Feasibility Studies" (1992). Theses and Dissertations. 7187.
https://scholar.afit.edu/etd/7187