Enhancement of nuclear spin superradiance by electron resonator

Superradiance of nuclear spins is considered, when the nuclei interact via hyperfine forces with electrons of a ferromagnet. The consideration is base d on a microscopic model. If the sample, coupled with a resonant electric c ircuit, possesses electronic magnetization, then the electron subsystem pla ys the role of an additional effective resonator, by enhancing the coupling between nuclear spins and the resonant circuit. Radiation power can he inc reased by three orders, while the radiation time of a superradiance burst c an become three times shorter. In the presence of dynamic nuclear polarizat ion, the regime of pulsing superradiance can occur.