Neutron phase imaging by a Talbot-Lau interferometer at Kyoto University Reactor

Seki, Toshichika*; Shinohara, Takenao   ; Hino, Masahiro*; Nakamura, Riichiro*; Samoto, Tetsuo*; Momose, Atsushi*

We have developed a new neutron phase imaging system with a Talbot-Lau interferometer for utilization at the CN-3 port of the Kyoto University Reactor. To achieve efficient differential-phase imaging and visibility imaging at this beamline, we adopted a relatively shorter design wavelength of 2.7 By fabricating neutron absorption gratings with thick gadolinium absorbers, we were able to obtain clear moire fringes with a high visibility of 55% for thermal neutrons.