Spectra and relaxation paths of Hg(3P1) in rare gas matrices

Crépin, C.; Tramer, A.
October 1992
Journal of Chemical Physics;10/1/1992, Vol. 97 Issue 7, p4772
Academic Journal
Absorption, fluorescence-excitation and fluorescence spectra, and lifetimes have been measured for 3P11S0 and 3P0→1S0 transitions in Hg atoms isolated in Ar, Kr, and Xe matrices. In all systems, the 3P1 state decays mainly by fluorescence emission; the 3P1[larger_closed_square]3P0 relaxation, inducing the long-lived 3P0→1S0 emission, being very inefficient. The 3P1→1S0 emission in Ar and Kr is a mirror image of the absorption, while a strong redshift in Xe corresponds to the formation of Hg*Xe exciplexes. The results are discussed in a model assuming the additivity of interatomic potentials deduced from the spectroscopic studies of jet-cooled Hg–rare-gas complexes.


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