PRESSURE DEPENDENCE OF THE $KrF~B\rightarrow X$ SPECTRUM
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Date
1977
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Ohio State University
Abstract
The $KrF~B \rightarrow X$ emission spectrum near 2500 {\AA} is studied at pressures between 1 and 500 Torr using high-frequency electrical excitation of Kr and appropriate fluorides. The data yield a limiting high-pressure spectrum which agrees with results of a previous analysis, thus supporting the contention that the ``fine structure” in some published spectra is a manifestation of superradiance in this bound-free transition. Accordingly the weaker, longer wavelength peak in the laser spectrum is due to lasing from $v^{\prime} = 1$. The transformation from the low- to high-pressure spectrum is reproduced in computer simulated spectra, from which may be deduced information about the changing vibrational distributions in the excited state.
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Author Institution: Department of Chemistry, Vanderbilt University