Date of Award

1-1997

Document Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Department of Engineering Physics

First Advisor

Glen P. Perram, PhD

Abstract

The spectroscopy of high rotational levels (J ≤ 211) in Bi2 X(Og+) and A(Ou+) was investigated for 2≤v"≤5 and 0≤v'≤4 by observing total fluorescence from laser excitation. Dunham coefficients were derived that fit all observed rotational lines to within 0.01 cm-1. Franck-Condon factors were calculated and experimentally verified for transitions originating from the initially populated levels 0≤v'≤5. Vibrational energy transfer upon collision with rare gas collision partners was investigated for the low-lying vibrational levels of the A-state using spectrally resolved, continuous wave laser induced fluorescence. Vibrational transfer was adequately modeled by Landau-Teller scaling of the Δv=-1 vibrational transfer rates with fundamental rate coefficients ranging from kv=5.29x10-12 cm3/molec-sec for collisions with helium to 2.38x10-12 cm3/molec-sec for krypton. Electronic quenching and multi-quantum transfer rates were approximately an order of magnitude slower than single quantum transfer rates.

AFIT Designator

AFIT-DS-ENP-97-04

DTIC Accession Number

ADA323253

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