Lifetime studies of Cs*HeN exciplexes in solid ⁴He

Moroshkin, Peter; Hofer, Adrian; Lebedev, Victor; Weis, Antoine

doi:10.1103/PhysRevA.78.032501

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Journal article

Lifetime studies of Cs^*He_N exciplexes in solid ⁴He

Moroshkin, Peter Physics Department, Université de Fribourg, Switzerland
Hofer, Adrian Physics Department, Université de Fribourg, Switzerland
Lebedev, Victor Physics Department, Université de Fribourg, Switzerland
Weis, Antoine Physics Department, Université de Fribourg, Switzerland

03.09.2008

Published in:

Physical Review A. - 2008, vol. 78, p. 032501

English We present time-resolved measurements of the laser-induced fluorescence from Cs atoms and Cs^*He_N exciplexes in a solid ⁴He matrix. The linear Cs^*He₌₂ exciplex is strongly quenched by a radiationless transformation into a ring-shaped Cs^*He_N=6,7 exciplex, which decays radiatively with a lifetime of 88±2 ns. The analysis of this lifetime provides information on the formation rate of Cs^*He_N=6,7 and on perturbations of the electronic states of the Cs atom by the bound helium atoms.

Faculty

Faculté des sciences et de médecine

Department

Département de Physique

Language