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

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Abstract

For the neutron phase imaging with a Talbot-Lau interferometer, we have fabricated neutron absorption gratings with a pitch of 9 μm 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.

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Seki, Y., Shinohara, T., Ueno, W., Parker, J. D., Samoto, T., Yashiro, W., & Momose, A. (2017). Experimental Evaluation of Neutron Absorption Grating Fabricated by Oblique Evaporation of Gadolinium for Phase Imaging. In Physics Procedia (Vol. 88, pp. 217–223). Elsevier B.V. https://doi.org/10.1016/j.phpro.2017.06.030

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