2 Synchrotron-Radiation-Based Energy-Domain Mössbauer …
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Fig. 2.8 a Schematic diagram for the measurement of nuclear resonant inelastic scattering.
b Nuclear resonant scattering is discerned from prompt electronic scattering in the time domain as
delayed scattering because of the finite lifetimes. c As a function of the incident photon energy E,
the phonon energy spectrum can be obtained by counting the intensity of delayed scattering. In the
phonon energy spectrum, the left-side scattering is due to the excitation accompanied by phonon
annihilation [E = E 0 (nuclear resonant excitation energy) - E phonon (phonon energy)], while the
right-side scattering is due to excitation accompanied by phonon creation [E = E 0 + E phonon ]
73
Fig. 2.8 a Schematic diagram for the measurement of nuclear resonant inelastic scattering.
b Nuclear resonant scattering is discerned from prompt electronic scattering in the time domain as
delayed scattering because of the finite lifetimes. c As a function of the incident photon energy E,
the phonon energy spectrum can be obtained by counting the intensity of delayed scattering. In the
phonon energy spectrum, the left-side scattering is due to the excitation accompanied by phonon
annihilation [E = E 0 (nuclear resonant excitation energy) - E phonon (phonon energy)], while the
right-side scattering is due to excitation accompanied by phonon creation [E = E 0 + E phonon ]