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Oral presentation

Secure detection of nuclear material in a heavy shielding and reliable investigation of inner structure of the shielding using mono-energetic high energy and high intensity $$gamma$$-rays

Hajima, Ryoichi; Seya, Michio

no journal, , 

Monochromatic $$gamma$$-rays produced by laser Compton scattering could be used for detection of nuclear material with cobined use of nuclear resonance flourescence. By using ERL (Energy Recovery Linac) based $$gamma$$-ray source for producing high intensity, it is possible to detect nuclear material inside an heavily shielded object and also to have clear imaging inside of it. In this poster presentation, a prospect of application of the $$gamma$$-ray source to nuclear material detection system.

Oral presentation

A Proposal of nuclear materials detection and inspection systems in heavily shielded suspicious objects by non-destructive manner

Koizumi, Mitsuo

no journal, , 

no abstracts in English

Oral presentation

Nuclear security study using $$gamma$$-rays

Shizuma, Toshiyuki*; Hajima, Ryoichi*; Koizumi, Mitsuo; Seya, Michio

no journal, , 

no abstracts in English

Oral presentation

Demonstration of imitated nuclear material detection using nuclear resonance fluorescence nondestructive assay method

Koizumi, Mitsuo; Omer, M.; Takahashi, Tone; Seya, Michio; Hajima, Ryoichi; Shizuma, Toshiyuki; Hashimoto, Satoshi*; Amano, So*; Miyamoto, Shuji*

no journal, , 

JAEA, QST, and University of Hyogo are developing a nuclear material detection technique that utilizes a measurement method of nuclear resonance fluorescence gamma-ray scattering induced by laser Compton scattering gamma-ray beams, under the subsidiary for "promotion of strengthening nuclear security or the like" of MEXT. So far, experimental apparatus, a laser system, gamma-ray detectors, data acquisition systems, and so on, are prepared for a demonstration experiment to be performed at NEW SBARU facility of University of Hyogo. An imitated nuclear material sample hidden in a shield will be placed on an automatic stage. This presentation overview the purpose of this program, preparation status, plan of demonstration experiments and a workshop.

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