MEASURING THE NUCLEAR HYPERFINE POPULATIONS IN THE GROUND ELECTRONIC STATE OF ATOMIC HYDROGEN USING VELOCITY-ALIGNED DOPPLER SPECTROSCOPY
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Date
1996
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Publisher
Ohio State University
Abstract
A variation on the technique of velocity-aligned Doppler spectroscopy has been used to measure the relative populations in the F=0 and F=1 nuclear hyperfine levels in the ground electronic state of atomic hydrogen produced in the 193 nm photolysis of HBr. This technique provides an unambiguous correlation between the H atom state distributions and the spin-orbit states of the counter fragment, i.e. Br($^{2}P_{3/2}$) and Br($^{2}P_{1/2}$). H atom state distributions are monitored by observing the (1+1) two-color multiphoton ionization spectrum exciting through the Lyman-$\alpha$ transition. Effects of small Stark fields on the observed spectra will be discussed.
Description
Author Institution: Department of Chemistry, Tulane University