Time evolution of incoherent scattering under double gamma-NMR resonance conditions

Incoherent Mössbauer scattering under the condition of double gamma-NMR resonance is considered. A radio frequency field mixes the hyperfine sublevels of a nucleus. Thus, quasi energy splitting in the rotating frame takes place. Time dependencies of the intensity of scattered radiation have been analysed both under the CEMS condition and in the regime of Mössbauer spectroscopy with synchrotron radiation.