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11th International Meeting of the Union for Compact Accelerator-driven Neutron Sources (UCANS11)

24–28 Feb 2025
Pinnacle at the Pier
America/Vancouver timezone
Time table has been published || Registration on-site opens at 11:00 a.m. Monday, February 24

Conference Services

Advancement of Neutron Imaging Techniques Towards the Highest Resolution and Development of Imaging Application with RANS Using Particle Tracking Detectors

25 Feb 2025, 14:00
20m
Pinnacle at the Pier

Pinnacle at the Pier
Contributed Oral Session 5

Speaker

Dr Abdul Muneem (RIKEN, Japan)

Description

Neutron imaging (NI) is a nondestructive and noninvasive inspection technique with a wide range of potential applications. The fundamentals of this technique need to be improved, particularly in achieving micrometer-scale or finer resolution, which remains a challenging task. Recently, we developed a high-resolution NI device utilizing fine-grained nuclear emulsions (FGNE). The NI of gadolinium-based gratings were successfully performed. The calculated imaging resolution, based on grayscale optical images of a gadolinium-based grating with a periodic structure of 9 μm was, 0.945 ± 0.004 μm, the highest imaging resolution achieved so far. Although these detectors offer exceptionally high resolution, they are not reusable. To address this limitation, we investigated the potential of fluorescent nuclear track detectors (FNTDs) for high-resolution NI. We presented an approach to perform optical bleaching under the required conditions for the imaging applications. It was concluded that FNTDs can be reused for imaging applications at least seven times. The NI of a gadolinium-based grating with a periodic structure of 9 μm was performed, and the grating structure was successfully resolved first using the novel FNTD-based neutron imaging technique. The measured resolution with the FNTD-based neutron detector is 0.887 ± 0.009 μm. In the near future, these FNTDs will be further developed for use in compact neutron systems RIKEN Accelerator-driven compact neutron systems (RANS), where there is a high demand from industry for research and development in non-destructive observation. We aim to develop a high-resolution neutron computed tomography technique and realize neutron imaging applications with RANS, utilizing FNTDs and FGNEs.

Funding Agency RIKEN, Japan
Email Address Email Address

Primary authors

Dr Hiroyuki Ekawa (RIKEN, Japan) Dr Masahiro Hino (KURNS, Kyoto university, Japan) Dr Katsuya Hirota (KEK, Japan) Dr Go Ichikawa (KEK, Japan and J-PARC, Japan) Dr Ayumi Kasagi (RIKEN, Japan) Dr Masaaki Kitaguchi (Nagoya university, Japan and KMI, Nagoya university, Japan) Dr Tomohiro Kobayashi (RIKEN, Japan) Dr Satoshi Kodaira (QST, Chiba, Japan) Dr Kenji Mishima (J-PARC, Japan and KMI, Nagoya university, Japan) Dr Maki Mizuta (RIKEN, Japan) Prof. Jameel-Un Nabi (University of Wah, Pakistan) Dr Manami Nakagawa (RIKEN, Japan) Dr Naotaka Naganawa (Nagoya university, Japan and IMaSS, Nagoya university, Japan) Dr Yasuki Okuno (RIKEN, Japan) Dr Yoshie Otake (RIKEN, Japan) Mr Michio Sakashita (RIKEN, Japan) Dr Norihito Saito (RIKEN, Japan) Prof. Takehiko R. Saito (RIKEN, Japan, GSI, Germany and Saitama Univeristy, Japan) Dr Takaoki Takanashi (RIKEN, Japan) Dr Satoshi Wada (RIKEN, Japan) Dr Junya Yoshida (Tohuku university, Japan and SRIS, Tohuku university, Japan) Dr Nakahiro Yasuda (University of Fukui, Japan) Dr Abdul Muneem (RIKEN, Japan)

Presentation materials

Muneem_24-28022025_UCANS11_presentation.pptx
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