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ANALYSIS OF PERTURBATIONS OBSERVED IN THE FT SPECTRA OF $CuCl_{2}$

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Title: ANALYSIS OF PERTURBATIONS OBSERVED IN THE FT SPECTRA OF $CuCl_{2}$
Creators: Yiannopoulou, A.; Ross, A. J.; Crozet, P.; Brown, J. M.
Issue Date: 1997
Abstract: Abnormally large e-f separations have been observed in the $(v_{1},0,v_{3})$ levels of the ground $X^{2}\Pi_{g(3/2)}$, state of $CuCl_{2}$ about $2500\;cm^{-1}$ above the lowest vibrational level (0,0,0). The largest splitting are accompanied by extra lines in the dispersed fluorescence spectra. Some of the extra lines have resolvable Cu hyperfine structure; they are assigned as transitions to levels winch result from mixing essentially between $^{2}\Pi_{g(1/2)}$ and a nearby $^{2}\Sigma_{g}$ state. We have used an effective Hamiltonian to model the $^{2}\Pi \sim ^{2}\Sigma$ interaction and derived molecular constants for the unknown $^{2}\Sigma$ state using a non-linear least-squares fitting routine. Taking an arbitrary value of the spin-orbit parameter $A_{\Pi}$ of-$300\;cm^{-1}$, we estimate the $^{2}\Sigma$ state to lie around $3000\;cm^{-1}$ above the (0,0,0) level of the $X^{2}\Pi_{g(3/2)}$ ground state.
URI: http://hdl.handle.net/1811/14022
Other Identifiers: 1997-TA-11
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