Neutron capture cross sections of curium isotopes measured with ANNRI at J-PARC

被引：4

作者：

Kawase, Shoichiro ^{[1
,2
]}

Kimura, Atsushi ^{[1
]}

Harada, Hideo ^{[1
]}

Iwamoto, Nobuyuki ^{[1
]}

Iwamoto, Osamu ^{[1
]}

Nakamura, Shoji ^{[1
]}

Segawa, Mariko ^{[1
]}

Toh, Yosuke ^{[1
]}

机构：

[1] Japan Atom Energy Agcy, Nucl Sci & Engn Ctr, Naka, Ibaraki 3191195, Japan

[2] Kyushu Univ, Dept Adv Energy Sci & Engn, 6-1 Kasuga Koen, Kasuga, Fukuoka 8168580, Japan

来源：

JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY | 2021年 / 58卷 / 07期

关键词：

Cm-244; Cm-246; neutron capture cross section; J-PARC; MLF; ANNRI; minor actinide; neutron time-of-flight method; resonance; measurement;

D O I：

10.1080/00223131.2020.1864492

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：

The neutron capture cross sections of Cm-244 and Cm-246 were measured for the neutron energy range of 1-1000 eV via the neutron time-of-flight method with Accurate Neutron-Nucleus Reaction measurement Instrument (ANNRI) at Materials and Life Science Experimental Facility (MLF) of the Japan Proton Accelerator Research Complex (J-PARC). The world's most intense neutron pulses from the Japan Spallation Neutron Source (JSNS) enable the accurate measurement of neutron capture cross sections. Besides, single-bunched neutron pulses allow the analysis in a higher neutron energy region than the previous measurement at ANNRI. The resonance analyses were performed up to 1000 eV by using a resonance shape analysis code REFIT. The spectra of prompt gamma-rays from neutron capture reactions of Cm-244 and Cm-246 were also obtained, and 43 and 10 prompt gamma-ray peaks from Cm-244 (n, gamma) and 246Cm (n, gamma) reactions were newly observed, respectively.

引用

页码：764 / 786

页数：23

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