Date of Award

1992

Degree Type

Thesis

Degree Name

M.Sc.

Department

Physics

Keywords

Physics, Optics.

Rights

CC BY-NC-ND 4.0

Abstract

Fluorescence and excitation spectra of HgCd were studied using pump and probe methods of laser spectroscopy with time resolution. A Hg-Cd vapor mixture, contained in a sealed quartz cell at 710 K, was irradiated by consecutive pump and probe dye-laser pulses. The pump radiation produced a population of $Cd5\sp3 P\sb1$ atoms whose 3-body collisions with Hg atoms resulted in the formation of HgCd excimers in the $A0\sp{-}$, $AO\sp{-}$, and A1 states, correlated with the $Cd5\sp3 P + Hg6\sp1 S$ manifold, which decayed emitting a previously reported 4600 A fluorescence continuum. The probe pulses, delayed by 450 ns, excited the excimers to the higher lying $CO\sp{-}\ (Cd5\sp1\ P\sb1\ +\ Hg6\sp1S\sb0)$ state which decayed to the repulsive $X0\sp{-}$ ground state emitting fluorescence in the 2400-2650 A region. A study of the time-evolution of the excimer fluorescence yielded the three-body rate coefficient for HgCd formation, and an analysis of the spectra produced spectroscopic constants for the states involved in the transitions. Source: Masters Abstracts International, Volume: 31-04, page: 1820. Thesis (M.Sc.)--University of Windsor (Canada), 1992.

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