TIME-DOMAIN INTERFEROMETRY IN X-RAY REGION USING NUCLEAR RESONANT SCATTERING

Two basic examples of the externally controllable interferometry in th e time domain in the X-ray region, which was carried out by the combin ation of nuclear resonant scattering with an X-ray interferometer, are shown. Time distributions of the scattered photons were measured with (i) two scatterers with different hyperfine structures inserted in re spective beam paths, and (ii) two scatterers of the same kind in each beam path, one of which is translated to produce the Doppler shift. Mo dification of the time beat was observed, which is expected from stand ard theory assuming that the field amplitudes are superposed in the ti me domain.