LASER SPECTROSCOPY OF CuO
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Date
1977
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Publisher
Ohio State University
Abstract
The numerous and complex band systems of CuO have been studied by traditional spectroscopists since $1912.^{1}$ The blue and violet region has an especially chaotic appearance. Even the characteristic CuO orange-red system has resisted correct rotational analysis until $recently.^{2}$ In the present study CuO fluorescence is excited using single longitudinal mode $Ar^{+}$ and cw dye lasers. The spectrum of CuO provides a good example of how laser spectroscopic techniques can supplement the information obtained by traditional spectroscopy. Special focus is on explication of anomalous rotational constants of the $X^{2}\Pi$ state, unusual intensity relations between spin subbands and in vibrational progressions, and evidence for previously unobserved low lying electronic states. Several transitions are observed in which the upper level is populated by cascading, highly efficient collision induced transfer, and by laser induced chemical reactions of $CuO^{*}$.
Description
$^{1}$H. Hertenstein, Z. Wiss. Photogr. 11, 69, 199 (1912). $^{2}$O. Appelblad and A. Lagerqvist, Physica Scripta 10, 307 (1974). Ingemar Renhorn is a visiting scholar from the Institute of Physics, Stockholm, Sweden.
Author Institution: Department of Chemistry, Massachusetts Institute of Technology
Author Institution: Department of Chemistry, Massachusetts Institute of Technology