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

關 善親*; 篠原 武尚; 日野 正裕*; 中村 吏一朗*; 佐本 哲雄*; 百生 敦*

Review of Scientific Instruments, 94(10), p.103701_1 - 103701_7, 2023/10

https://doi.org/10.1063/5.0157494

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.