| Autor: |
WANG Xuehao, HUANG Hanxiong, LAN Xiaofei, RUAN Xichao, ZHANG Qiwei, REN Jie, SUN Qi, LUAN Guangyuan, LIU Chao, DING Yanyan, WANG Jincheng, MA Xu, HU Zhijie, GUO Mingwei, JIANG Liyang |
| Jazyk: |
čínština |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
He jishu, Vol 44, Iss 12, Pp 120501-120501 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
0253-3219 |
| DOI: |
10.11889/j.0253-3219.2021.hjs.44.120501&lang=zh |
| Popis: |
BackgroundDue to the special physical properties of gallium, gallium is considered to be used as reactor coolant in the future. Therefore, a full set of gallium neutron data is needed. However, the experimental data of gallium in EXFOR (Nuclear reaction experimental data) database is rare. There are also some discrepancies among the evaluation data.PurposeThis study aims to obtain elastic scatting differential cross section for natural gallium at 8.0 MeV incident neutrons, so as to fill the blanks of the neutron data of gallium in the database and clarify the discrepancy among the evaluation data.MethodsFirst of all, the elastic scatting differential cross section data of natural gallium was measured at 21 different laboratory angles from 20° to 140° by using the multi-detector fast neutron time-of-flight (NTOF) spectrometer on HI-13 tandem acceleration at the China Institution of Atomic Energy (CIAE). The cross sections of gallium were normalized by n-p elastic scatting cross section, and the quality of data was improved by many methods applied to the measurement and data analysis. Then, the Monte-Carlo code STREUER was employed to rectify the neutron flux attenuation, multiple scattering and the finite geometry of the experiment. Finally, the measured TOF spectra were compared with that of simulated to determine experimental scatting differential cross section of 8.0 MeV incident neutrons.Results & ConclusionsThe results of cross section of secondary neutron for natural gallium are the world's first experimental data in the 8.0 MeV energy region. Compared with the evaluated data, the measured data is generally in good agreement with CENDL-3.2 data, but inconsistent with ENDF/B-8.0 data and JENDL-4.0 data. The divarication among these three data bases has been clarified by the experimental result, hence of great significance to data evaluation and theoretical model improvement. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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