Demonstration of Neutron Phase Imaging Based on Talbot–Lau Interferometer at Compact Neutron Source RANS

Hidekazu Takano, Yanlin Wu, Tetsuo Samoto, Atsushi Taketani, Takaoki Takanashi, Chihiro Iwamoto, Yoshie Otake, Atsushi Momose

Research output: Contribution to journalArticlepeer-review

Abstract

Neutron imaging based on a compact Talbot–Lau interferometer was demonstrated using the RIKEN accelerator-driven compact neutron source (RANS). A compact Talbot–Lau interferometer consisting of gadolinium absorption gratings and a silicon phase grating was constructed and connected to the RANS. Because of pulsed thermal neutrons from the RANS and a position-sensitive detector equipped with time-of-flight (TOF) analysis, moiré interference patterns generated using the interferometer were extracted at a TOF range around the design wavelength (2.37 Å) optimal for the interferometer. Differential phase and scattering images of the metal rod samples were obtained through phase-stepping measurements with the interferometer. This demonstrates the feasibility of neutron phase imaging using a compact neutron facility and the potential for flexible and unique applications for nondestructive evaluation.

Original languageEnglish
Article number22
JournalQuantum Beam Science
Volume6
Issue number2
DOIs
Publication statusPublished - 2022 Jun

Keywords

  • Talbot–Lau interferometer
  • compact neutron source
  • neutron radiography
  • phase imaging

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