Laser-induced formation and spectroscopy of Cs*Hen exciplexes in solid 4He

P. Moroshkin; D. Nettels; A. Hofer; S. Ulzega; A. Weis

doi:10.1117/12.677945

19 May 2006 Laser-induced formation and spectroscopy of Cs*He_n exciplexes in solid ⁴He

P. Moroshkin, D. Nettels, A. Hofer, S. Ulzega, A. Weis

Proceedings Volume 6257, ICONO 2005: Nonlinear Laser Spectroscopy, High Precision Measurements, and Laser Biomedicine and Chemistry; 625706 (2006) https://doi.org/10.1117/12.677945
Event: ICONO 2005, 2005, St. Petersburg, Russian Federation

Abstract

Cs* He_n 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*He_n exciplexes: an apple-shaped Cs(AΠ₃_/₂)He₂ and Cs(AΠ_1/2)He₂ and a dumbbell-shaped Cs(AΠ_1/2)He₇ exciplex. Our observations contradict the commonly accepted belief that Cs*He_n 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.

Citation Download Citation

P. Moroshkin, D. Nettels, A. Hofer, S. Ulzega, and A. Weis "Laser-induced formation and spectroscopy of Cs*He_n exciplexes in solid ⁴He", Proc. SPIE 6257, ICONO 2005: Nonlinear Laser Spectroscopy, High Precision Measurements, and Laser Biomedicine and Chemistry, 625706 (19 May 2006); https://doi.org/10.1117/12.677945

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