The ionization state strongly affects one of the hyperfine interactions that can be studied using this effect, the isomer shift.
Measurements of this effect can display a relativistic time dilation or second-order Doppler shift that was derived by Josephson from the mass-energy relation. The fraction of events that exhibits this effect is sometimes known as the Debye-Waller factor. The ionization state strongly affects one of the hyperfine interactions that can be studied using this effect, the isomer shift. One study utilizing a sample of iron-57 made use of this effect in measuring gravitational redshift, and was conducted by Pound and Rebka. For 10 points, name this special case of nuclear resonance fluorescence in which gamma-ray absorption or emission from a lattice or extremely viscous fluid occurs in a recoil-free fashion.
Measurements of this effect can display a relativistic time dilation or second-order Doppler shift that was derived by Josephson from the mass-energy relation.
{Mössbauer} effect