検索対象:     
報告書番号:
※ 半角英数字
 年 ~  年

Measurement of neutron capture $$gamma$$ rays from the resonances of $$^{91}$$Zr and $$^{96}$$Zr at the J-PARC/MLF/ANNRI

J-PARC/MLF/ANNRIにおける$$^{91}$$Zrと$$^{96}$$Zrの共鳴からの中性子捕獲$$gamma$$線の測定

堀 順一*; 古高 和禎; 後神 進史*; 原田 秀郎 ; 木村 敦; 金 政浩; 北谷 文人; 小泉 光生; 中村 詔司; 太田 雅之*; 大島 真澄; 藤 暢輔; 井頭 政之*; 片渕 竜也*; 水本 元治*; 加美山 隆*; 木野 幸一*; 鬼柳 善明*

Hori, Junichi*; Furutaka, Kazuyoshi; Goko, Shinji*; Harada, Hideo; Kimura, Atsushi; Kin, Tadahiro; Kitatani, Fumito; Koizumi, Mitsuo; Nakamura, Shoji; Ota, Masayuki*; Oshima, Masumi; Toh, Yosuke; Igashira, Masayuki*; Katabuchi, Tatsuya*; Mizumoto, Motoharu*; Kamiyama, Takashi*; Kino, Koichi*; Kiyanagi, Yoshiaki*

J-PARC MLF施設に整備された中性子核反応測定装置(ANNRI)において、$$^{91}$$Zrと$$^{96}$$Zrからの中性子捕獲$$gamma$$線を、4$$pi$$Geスペクトロメータを用いてTOF法にて測定した。TOFスペクトルで、ゲートをかけることにより、$$^{91}$$Zrの292-eVの共鳴、及び$$^{96}$$Zrの301-eVの共鳴に起因する$$gamma$$線波高スペクトルを得ることができた。$$^{96}$$Zrの測定において、$$^{91}$$Zr共鳴を同定することにより、核種を分別できることを示した。

The prompt $$gamma$$ rays from the neutron capture reactions by $$^{91}$$Zr and $$^{96}$$Zr were measured. A neutron time-of-flight (TOF) method was adopted with a 4$$pi$$ Ge spectrometer installed at the Accurate Neutron-Nucleus Reaction measurement Instrument (ANNRI) in the J-PARC Material and Life science experimental Facility (MLF). The $$gamma$$-ray pulse-height spectra corresponding to the 292-eV resonance of $$^{91}$$Zr and the 301-eV resonance of $$^{96}$$Zr were obtained by gating on the TOF regions, respectively. The relative intensities of those transitions were derived. Moreover, we have demonstrated the nuclide discrimination technique by identifying $$^{91}$$Zr resonances (isotopic composition of 5.3%) in the measurement of $$^{96}$$Zr sample. This technique can be applicable to the neutron capture measurement for a small amount of sample expected in case of long lived fission products (LLFPs) such as $$^{93}$$Zr.

Access

:

- Accesses

InCites™

:

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.