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In contrast with Mössbauer spectroscopy, nuclear resonant scattering with synchrotron radiation is generally performed in time domain.where the nuclear decay is studied as a function of time after excitation by the synchrotron pulse.If we consider resonant scattering for an individual nucleus ,the scattered intensity will show an exponential decay as a function of time.Which is determined by the lifetime of the nuclear excited state.Now if we consider a material where nucleus are embedded,the energy levels will split due to the hyperfine interaction.The synchrotron radiation will comes as a pulse and has a broad energy spectrum.This pulse will excite all hyperfine levels simultaneously and giving rise to interferences between the different nuclear transitions.This leads to a temporal beat pattern in time spectrum.From such beat pattern by numerical analysis we can get the frequency.From frequency we can get information about different hyperfine parameters
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