ULTRAVIOLET ABSORPTION SPECTRA OF LiH AND LiD
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Date
1957
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Ohio State University
Abstract
“The absorption spectra of LiH and LiD have been photographed in the 2300-3200$\AA$ region, using the 3rd order of a 21 foot grating spectrograph. Multiple reflection mirrors have been used in the absorption tube to obtain path lengths up to 16 meters. For each molecule a new ($^{1}\Pi X^{1}\sum^{+}$) band system, showing a clear breaking off of the fine structure due to rotational predissociation, has been found. The rotational and vibrational analyses of both systems have been made and from the observed predissociation limits, the dissociation energies (Do) of LiH and LiD in the ground state have been found to be, $2,429\pm 0.001$ eV, and $2.451\pm 0.001$ eV, respectively.”
Description
Author Institution: Division of Pure Physics, National Research Council