Neutron performance and future prospect of the compact electron accelerator-driven neutron facility AISTANS

Koichi Kino, Takeshi Fujiwara, Michihiro Furusaka, Takemi Muroga, Brian E. O’Rourke, Nagayasu Oshima and Yo Tomota

Jadavpur Journal of International Relations, 2022, vol. 24, issue 3-4, 395-401

Abstract: The neutron wavelength resolution, Bragg-edge measurement ability and future prospects regarding the neutron count rate were investigated at AISTANS. The wavelength resolution evaluated by Bragg-edge analysis using an iron powder sample is in reasonably good agreement with calculations at neutron wavelengths of 0.2–0.3 nm. Bragg-edge imaging was also performed on a steel plate sample with distinct regions of BCC and FCC crystallinity, and the different crystal structures were successfully discriminated. In addition, an aluminum sample containing a friction stir spot welding region was also measured and the 200 and 111 Bragg-edges at the two joining areas were observed. However, it was hard to characterize the difference in texture between the two areas. The neutron counting rate for Bragg-edge imaging is expected to increase by approximately a factor 50 in the near future thanks to the planned improvements of the electron beam power and the detection efficiency of the neutron detector.

Keywords: AISTANS; pulsed neutron beam; Bragg-edge imaging (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:sae:jadint:v:24:y:2022:i:3-4:p:395-401

DOI: 10.3233/JNR-220022

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