Moroshkin, Peter Hofer, Adrian Lebedev, Victor Weis, Antoine 2008-09-03 We present time-resolved measurements of the laser-induced fluorescence from Cs atoms and Cs^*He_<i>N</i> 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_<i>N</i>=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_<i>N</i>=6,7 and on perturbations of the electronic states of the Cs atom by the bound helium atoms. application/pdf https://folia.unifr.ch/global/documents/300888 https://folia.unifr.ch/documents/300888/files/moroshkin_lse.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.78.032501 info:eu-repo/semantics/openAccess License undefined Physical Review A. - 2008, vol. 78, p. 032501 caesium excimers fluorescence nonradiative transitions radiation quenching radiative lifetimes solid helium time resolved spectra info:eu-repo/classification/udc/53 Lifetime studies of Cs^*He_<i>N</i> exciplexes in solid ⁴He http://purl.org/coar/resource_type/c_6501