First nuclear transmutation of 237Np and 241Am by accelerator-driven system at Kyoto University Critical Assembly

被引：12

作者：

Pyeon, Cheol Ho ^{[1
]}

Yamanaka, Masao ^{[1
]}

Oizumi, Akito ^{[2
]}

Fukushima, Masahiro ^{[2
]}

Chiba, Go ^{[3
]}

Watanabe, Kenichi ^{[4
]}

Endo, Tomohiro ^{[4
]}

Van Rooijen, Wilfred G. ^{[5
]}

Hashimoto, Kengo ^{[6
]}

Sakon, Atsushi ^{[6
]}

Aizawa, Naoto ^{[7
]}

Kuriyama, Yasutoshi ^{[1
]}

Uesugi, Tomonori ^{[1
]}

Ishi, Yoshihiro ^{[1
]}

机构：

[1] Kyoto Univ, Inst Integrated Radiat & Nucl Sci, Osaka, Japan

[2] Japan Atom Energy Agcy, Nucl Sci & Engn Ctr, Ibaraki, Japan

[3] Hokkaido Univ, Grad Sch Engn, Sapporo, Hokkaido, Japan

[4] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi, Japan

[5] Univ Fukui, Res Inst Nucl Engn, Fukui, Japan

[6] Kindai Univ, Atom Energy Res Inst, Osaka, Japan

[7] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi, Japan

来源：

JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY | 2019年 / 56卷 / 08期

关键词：

KUCA; ADS; nuclear transmutation; Np-237; Am-241; 100 MeV protons; Pb-Bi target; 100 MEV PROTONS; REACTIVITY; ADS;

D O I：

10.1080/00223131.2019.1618406

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

This study demonstrates, for the first time, the principle of nuclear transmutation of minor actinide (MA) by the accelerator-driven system (ADS) through the injection of high-energy neutrons into the subcritical core at the Kyoto University Critical Assembly. The main objective of the experiments is to confirm fission reactions of neptunium-237 (Np-237) and americium-241 (Am-241), and capture reactions of Np-237. Subcritical irradiation of Np-237 and Am-241 foils is conducted in a hard spectrum core with the use of the back-to-back fission chamber that obtains simultaneously two signals from specially installed test (Np-237 or Am-241) and reference (uranium-235) foils. The first nuclear transmutation of Np-237 and Am-241 by ADS soundly implemented by combining the subcritical core and the 100 MeV proton accelerator, and the use of a lead-bismuth target, is conclusively demonstrated through the experimental results of fission and capture reaction events.

引用

页码：684 / 689

页数：6

共 20 条

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