Lifetime studies of Cs*HeN 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
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03.09.2008
Published in:
- Physical Review A. - 2008, vol. 78, p. 032501
caesium
excimers
fluorescence
nonradiative transitions
radiation quenching
radiative lifetimes
solid helium
time resolved spectra
English
We present time-resolved measurements of the laser-induced fluorescence from Cs atoms and Cs*HeN exciplexes in a solid ⁴He matrix. The linear Cs*He₌₂ exciplex is strongly quenched by a radiationless transformation into a ring-shaped Cs*HeN=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*HeN=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
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 10699
- DOI 10.1103/PhysRevA.78.032501
- Persistent URL
- https://folia.unifr.ch/unifr/documents/300888
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