19 May 2006 Laser-induced formation and spectroscopy of Cs*Hen exciplexes in solid 4He
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Cs* Hen exciplexes are produced by laser excitation of cesium atoms embedded in solid helium arid can be identified by their characteristic fluorescence spectra. Based on calculations of binding energies and emission spectra the fluorescence spectra observed in our experiments are assigned to the decay of specific Cs*Hen exciplexes: an apple-shaped Cs(AΠ3/2)He2 and Cs(AΠ1/2)He2 and a dumbbell-shaped Cs(AΠ1/2)He7 exciplex. Our observations contradict the commonly accepted belief that Cs*Hen dumbbell-shaped exciplexes with n > 2 do not exist. The contradiction arises probably from the higher He density in the pressurized crystal compared to gaseous or liquid helium environments.
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P. Moroshkin, P. Moroshkin, D. Nettels, D. Nettels, A. Hofer, A. Hofer, S. Ulzega, S. Ulzega, A. Weis, A. Weis, } "Laser-induced formation and spectroscopy of Cs*Hen exciplexes in solid 4He", Proc. SPIE 6257, ICONO 2005: Nonlinear Laser Spectroscopy, High Precision Measurements, and Laser Biomedicine and Chemistry, 625706 (19 May 2006); doi: 10.1117/12.677945; https://doi.org/10.1117/12.677945

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