Effects of optical radiation on the Mssbauer spectrum of 151Eu3+: CaF2
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We study the changes in the shape of the Mssbauer spectrum for the 21.5 keV transition of 151Eu3+ nuclei in a CaF2 lattice, assuming that a population of the excited electronic state 5D0 is maintained by optical pumping. For a population of the excited state 5D0 of 10%, we determine the magnitude of the changes in the Mssbauer spectrum as 1.9% of the area of the unperturbed spectrum. 2005 Taylor & Francis Group Ltd.