POPULATION TRAPPING IN ATOMS WITH HYPERFINE-STRUCTURE AND NUCLEAR DECAY

A new Doppler-free nuclear spectroscopy method is proposed. It is based on the resonance interaction of bichromatic laser light with an atom with a hyperfine structure in its ground state. The population of hyperfine components for the ii-case is calculated and the polarization rate dependence on the laser powers and phase difference is found. The case of nonstable atoms is considered and the angular distribution of nuclear decay gamma-quanta is calculated. The problem of experimental realization of the method proposed is discussed.