Emission of gamma rays shifted from resonant absorption by electron-nuclear double transitions in 151Eu2+:CaF2
Silviu Olariu, James J. Carroll, Carl B. Collins
Abstract
We show that the emission of a gamma-ray photon by a nucleus can be influenced by a microwave magnetic field acting on the atomic electrons. We study theoretically these electron-nuclear double transitions (ENDTs) for 151Eu nuclei in a CaF2 lattice at low temperature, in the presence of a static magnetic field and of a microwave magnetic field. The ENDTs acquire a significant intensity for certain resonance frequencies. The ENDTs are of interest for the identification of the position of the lines in complex Mössbauer spectra.
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