Discovery of a new low energy neutron resonance of 89Y

被引：0
作者：
Katabuchi, Tatsuya [1 ]
Toh, Yosuke [2 ]
Mizumoto, Motoharu [1 ]
Saito, Tatsuhiro [1 ]
Terada, Kazushi [1 ,3 ]
Kimura, Atsushi [2 ]
Nakamura, Shoji [2 ]
Huang Minghui [2 ]
Rovira, Gerard [2 ]
Igashira, Masayuki [1 ]
机构：
[1] Tokyo Inst Technol, Inst Innovat Res, Lab Adv Nucl Energy, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528550, Japan
[2] Japan Atom Energy Agcy, 2-4 Shirakata Shirane, Tokai, Ibaraki 3191195, Japan
[3] Kyoto Univ, Inst Integrated Radiat & Nucl Sci, 2-1010 Asashironishi, Kumatori, Osaka 5900494, Japan
来源：
EUROPEAN PHYSICAL JOURNAL A | 2021年 / 57卷 / 01期
关键词：
CROSS-SECTION MEASUREMENT; NUCLEAR-DATA; Y-89; RESOLUTION; SCIENCE;
D O I：
10.1140/epja/s10050-020-00320-8
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
A new neutron resonance of 89Y was discovered by time-of-flight (TOF) neutron capture experiments using a pulsed neutron beam from a spallation neutron source of the Japan Proton Accelerator Research Complex. The observed resonance energy was 19.7 eV that is much lower than the lowest energy (2.60 keV) of the previous reported resonances. In addition to the TOF measurement, nuclide identification of the resonance was made by prompt gamma -ray analysis. Neutron capture gamma -rays from 89Y were clearly observed only on the resonance. Resonance analysis was applied to the experimental results and the resonance parameters of the new resonance are given.
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