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    Nuclear Resonant Scattering (NRS) of synchrotron radiation is a hyperfine spectroscpy technique that can be used to obtain information about internal magnetic and electric fields in a sample material linked to hyperfine interactions. Unlike Mössbauer spectroscopy where nuclear hyperfine-split levels in the sample are excited from continuously incoming mono-energetic gamma-radiation emitted by a radioactive source, the radiation source for NRS is energetically broad radiation coming in in pulses. These pulses excite all the nuclear hyperfine-split levels at the same time. When the decays happen, the emitted energies are very close in value and can interfere with each other. This interference creates a temporal beat pattern from which hyperfine interaction parameters of the nuclei in the sample can be deduced. NRS of synchrotron radiation can be viewed as Fourier transform of Mössbauer spectroscopy from the energy domain to the time domain.

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