Experimental Evaluation of Neutron Absorption Grating Fabricated by Oblique Evaporation of Gadolinium for Phase Imaging

Publication date: 2017 Source:Physics Procedia, Volume 88 Author(s): Yoshichika Seki, Takenao Shinohara, Wakana Ueno, Joseph D. Parker, Tetsuo Samoto, Wataru Yashiro, Atsushi Momose For the neutron phase imaging with a Talbot-Lau interferometer, we have fabricated neutron absorption gratings with a pitch of 9μm by oblique evaporation of gadolinium. The performances of these gratings for the phase measurement were experimentally evaluated at RADEN in J-PARC, by observing the neutron transmission and the visibility of moiré fringe in the interferometer. A new analysis method using the wavelength-resolved neutron transmission was also attempted to estimate the characteristics of gratings.

Source: Physics Procedia - June 24, 2017 Category: Physics Source Type: research