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我国核数据实验研究进展

核技术 2023年第8期46卷 36-43页

作者：阮锡超中国原子能科学研究院核数据重点实验室北京102413

核数据,尤其是中子核数据,是国防建设、核能发展及核技术应用的基础,同时在核物理基础研究中也发挥重要作用。核数据的质量直接影响相关装置及产品的有效性、安全性、可靠性和经济性。实验数据是相关理论模型发展及核数据库研制的基础,... 详细信息

核数据,尤其是中子核数据,是国防建设、核能发展及核技术应用的基础,同时在核物理基础研究中也发挥重要作用。核数据的质量直接影响相关装置及产品的有效性、安全性、可靠性和经济性。实验数据是相关理论模型发展及核数据库研制的基础,因此,核数据实验研究在核数据研究中占有极其重要的地位。我国的核数据实验研究始于20世纪中期,经过数十年的发展,取得了丰硕的成果。本文将简要介绍我国核数据实验研究取得的进展,并尝试展望未来的发展。

关键词：核数据实验数据中子源

基于D-D中子源开展^(238)U样品屏蔽积分实验研究

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原子能科学技术 2024年第5期58卷 970-981页

作者：丁琰琰聂阳波胡志杰赵齐张环宇徐阔之张时宇潘欣怡兰长林任杰阮锡超中国原子能科学研究院北京102413 兰州大学甘肃兰州730000 中国工程物理研究院四川绵阳621900

利用中国原子能科学研究院的中子学屏蔽积分实验装置,通过飞行时间法分别测量了D-D中子源与不同尺寸^(238)U样品作用后在60°和120°的泄漏中子谱,样品表面积为30 cm×30 cm的板状样品,厚度分别为3、6和9 cm。利用蒙特卡罗程序对泄漏中... 详细信息

利用中国原子能科学研究院的中子学屏蔽积分实验装置,通过飞行时间法分别测量了D-D中子源与不同尺寸^(238)U样品作用后在60°和120°的泄漏中子谱,样品表面积为30 cm×30 cm的板状样品,厚度分别为3、6和9 cm。利用蒙特卡罗程序对泄漏中子谱进行了模拟计算,其中^(238)U数据分别采用CENDL-3.2库、ENDF/B-Ⅷ.0库、JENDL-5.0库和JEFF-3.3库中的数据。通过对模拟结果与实验结果的比较,重点分析了CENDL-3.2库中^(238)U数据存在的不足和需要改进之处,结果表明:在裂变反应能区内,CENDL-3.2库计算结果与实验结果符合较好,但在弹性散射能区60°和120°均有较大的高估,尤其是120°,而在裂变反应和分立能级非弹性散射的混合能区1.5~2.5 MeV又有明显低估。

关键词：泄漏中子谱铀 D-D中子源飞行时间法评价核数据

A method for determination of deuterium impurity in the helium beam

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Science China(Physics,Mechanics & Astronomy) 2018年第5期61卷 53-56页

作者： Han Chen ShiWei Xu NingTao Zhang Jun Hu KuoAng Li ShaoBo Ma xichao ruan XiaoDong Tang LiYong Zhang Institute of Modern Physics Chinese Academy of Sciences Department of Nuclear Physics China Institute of Atomic Energy Joint Department for Nuclear Physics Lanzhou University and Institute of Modern Physics Chinese Academy of Sciences National Astronomical Observatories of China Chinese Academy of Sciences

Both the LUNA（Laboratory for Underground Nuclear Astrophysics）collaboration in Europe and the JUNA（Jinping Underground Laboratory for Nuclear Astrophysics）collaboration in China are planning to study the key react... 详细信息

关键词：氢杂质天体物理学横梁氦实验室结束期原子合作

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中子核数据测量进展及展望

中国科学：物理学、力学、天文学 2020年第5期50卷 2-14页

作者：阮锡超中国原子能科学研究院核数据重点实验室北京102413

中子核数据是核物理基础研究、核能开发与利用以及核技术发展的基础数据,其质量直接关系到核装置等与核相关的产品的有效性、安全性与经济性.因此自中子发现以来,对中子核数据的研究已进行了80多年,各发达国家仍然不断地投入大量的人力... 详细信息

中子核数据是核物理基础研究、核能开发与利用以及核技术发展的基础数据,其质量直接关系到核装置等与核相关的产品的有效性、安全性与经济性.因此自中子发现以来,对中子核数据的研究已进行了80多年,各发达国家仍然不断地投入大量的人力物力进行研究,不断提高各数据库的质量,为基础研究、国防科技和国民经济服务.中子核数据研究包括实验测量、理论评价与宏观检验三部分,本文介绍了中子核数据测量方面的进展,主要包括测量平台与方法、中子反应数据和裂变数据实验测量方面的进展,最后进行了展望.

关键词：中子核数据测量中子反应数据裂变数据

Probing dark matter particles from evaporating primordial black holes via electron scattering in the CDEX-10 experiment

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Science China(Physics,Mechanics & Astronomy) 2024年第10期Mechanics & Astronomy) .卷 87-95页

作者： Zhenhua Zhang Litao Yang Qian Yue Kejun Kang Yuanjing Li Haipeng An Greeshma C. Jianping Chang Yunhua Chen Jianping Cheng Wenhan Dai Zhi Deng Changhao Fang Xinping Geng Hui Gong Qiuju Guo Tao Guo Xuyuan Guo Li He Shengming He Jinwei Hu Hanxiong Huang Tuchen Huang Lin Jiang S.Karmakar Haubin Li Hanyu Li Jianmin Li Jin Li Qianyun Li Renmingjie Li Xueqian Li Yulan Li Yifan Liang Bin Liao FongKay Lin ShinTed Lin Jiaxuan Liu Shukui Liu Yandong Liu Yu Liu Yuanyuan Liu Hao Ma Yucai Mao Qiyuan Nie Jinhua Ning Hui Pan Ningchun Qi Jie Ren xichao ruan Monoj Kumar Singh Tianxi Sun Changjian Tang Yang Tian Guangfu Wang Junzheng Wang Li Wang Qing Wang Yufeng Wang Yunxiang Wang Henry Tsz-King Wong Shiyong Wu Yucheng Wu Haoyang Xing Rui Xu Yin Xu Tao Xue Yulu Yan Nan Yi Chunxu Yu Haijun Yu Jianfeng Yue Ming Zeng Zhi Zeng Bingtao Zhang Fengshou Zhang Lei Zhang Zhenyu Zhang Jizhong Zhao Kangkang Zhao Minggang Zhao Jifang Zhou Zuying Zhou Jingjun Zhu CDEX Collaboration Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics Tsinghua University Department of Physics Tsinghua University Institute of Physics Academia Sinica NUCTECH Company YaLong River Hydropower Development Company College of Nuclear Science and Technology Beijing Normal University College of Physics Sichuan University School of Physics Peking University Department of Nuclear Physics China Institute of Atomic Energy Sino-French Institute of Nuclear and Technology Sun Yet-sen University School of Physics Nankai University Department of Physics Banaras Hindu University Department of Physics Beijing Normal University

Dark matter（DM） is a major constituent of the ***,no definite evidence of DM particles（denoted as “χ”） has been found in DM direct detection（DD） experiments to *** is a novel concept of detectingχfrom evaporating primordial black holes（PBHs）.We search forχemitted from PBHs by investigating their interaction with target *** examined PBH masses range from 1×1015to 7×1016g under the current limits of PBH abundance *** 205.4 kg·day data obtained from the CDEX-10 experiment conducted in the China Jinping Underground Laboratory,we exclude the χ-electron（χ-e） elastic-scattering cross section σχe～5×10-29cm2for χ with a mass ■ keV from our *** the higher radiation background but lower energy threshold（160 eV）,CDEX-10 fills a part of the gap in the previous *** (mχ,σχe) can be determined in the future,DD experiments are expected to impose strong constraints on fPBHfor large MPBHs.

关键词： CDEX primordial black hole light dark matter particle dark matter-electron scattering high purity germanium detector

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Measurement of the neutron total cross section of^(9)Be at the Back-n white neutron source of CSNS

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Chinese Physics C 2024年第8期48卷 140-152页

作者： Jiangbo Bai Jingyu Tang Liqun Shi Yonghao Chen Han Yi Jie Bao Yu Bao Ping Cao Haolei Chen Zhen Chen Zengqi Cui Ruirui Fan Changqing Feng Keqing Gao Xiaolong Gao MinHao Gu Changcai Han Guozhu He Yongcheng He Yang Hong Yiwei Hu Hanxiong Huang Xiru Huang Haoyu Jiang Wei Jiang Zhijie Jiang Hantao Jing Ling Kang Bo Li Chao Li Jiawen Li Qiang Li Xiao Li Yang Li Jie Liu Shubin Liu Ze Long Guangyuan Luan Changjun Ning Mengchen Niu Binbin Qi Jie Ren xichao ruan Zhaohui Song Kang Sun Zhijia Sun Zhixin Tan Xinyi Tang Binbin Tian Lijiao Wang Pengcheng Wang Zhaohui Wang Xiaoguang Wu Xuan Wu Likun Xie Xiaoyun Yang Li Yu Tao Yu Yongji Yu Guohui Zhang Linhao Zhang Qiwei Zhang Xianpeng Zhang Yuliang Zhang Zhiyong Zhang Luping Zhou Zhihao Zhou Kejun Zhu Institute of Modern Physics Fudan UniversityShanghai 200433China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China Sate Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China State Key Laboratory of Particle Detection and Electronics Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China

The neutron total cross section data of^(9)Be are essential in the nuclear structure model research of light nuclei and nuclear power *** neutron total cross section of^(9)Be in the 0.3 eV−120 MeV energy region has been measured using time-of-flight and transmission methods with the Neutron Total Cross Sectional Spectrometer(NTOX)based on the multi-cell fast fission chamber at the China Spallation Neutron Source(CSNS)-Back-n white neutron source(Back-n).The fission count-neutron energy distributions of ^(235)U and ^(238)U without samples and with Be samples with three thicknesses were measured in the double-bunch operation mode for a beam power of 100 *** Bayesian method was used to eliminate the influence of the double-bunch problem on neutron measurement in the energy region above 10 *** neutron total cross section of^(9)Be results was consistent with ENDF/B-VIII.0 evaluation library data in the 0.3 eV−20 MeV energy *** the energy ranges of 0.3 eV to 10 keV and 0.01 to 20 MeV,the deviations between our results and the evaluation results of ENDF/B-VIII.0 were within 2.5%and 15%,*** the resonance energy region,the measured resonance energies in our experiment were 0.63,0.82,and 2.8 MeV,*** results showed that the total cross section uncertainties of three Be samples were within 2.2%in the energy region below 1 *** total cross section uncertainty of 30 mm Be from ^(235)U was the smallest and less than 5%in the energy region of 0.3 eV−120 *** results of this experiment can provide technical support for further data analysis and related nuclear data evaluation.

关键词： ^(9)Be neutron total cross section CSNS Back-n time-of-flight method transmission method multi-cell fast fission chamber

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中国核数据研究进展及未来展望

原子能科学技术 2020年第S01期54卷 65-74页

作者：刘世龙葛智刚阮锡超陈永静中国原子能科学研究院核数据重点实验室北京102413

核数据作为核基础研究与核工程及核技术应用之间的桥梁,是核能开发、核技术应用的重要基础。经过60多年的发展,我国建立了包括实验测量、微观评价、理论计算、建库及宏观检验在内“小规模、高水平、有特点”的核数据研究体系,取得了大... 详细信息

核数据作为核基础研究与核工程及核技术应用之间的桥梁,是核能开发、核技术应用的重要基础。经过60多年的发展,我国建立了包括实验测量、微观评价、理论计算、建库及宏观检验在内“小规模、高水平、有特点”的核数据研究体系,取得了大量高水平的研究成果,完成了多期核数据研究任务,为我国核科技的发展提供了高质量的核数据支撑,同时也为我国的核能开发、核技术发展提供大量的基础核数据服务。本文简要介绍了我国核数据工作的历史贡献以及近年来取得的进展,并对我国核数据的未来发展进行了展望。

关键词：核数据核数据测量核数据评价核数据库宏观检验

^(252)Cf裂变γ射线伴随飞行时间法刻度液体闪烁体中子探测效率

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原子能科学技术 2018年第2期52卷 215-220页

作者：任杰聂阳波阮锡超黄翰雄李霞张凯中国原子能科学研究院核数据重点实验室北京102413

宏观检验实验是检验核数据正确性的重要实验方法之一。液体闪烁体中子探测器是中子核数据宏观检验实验中快中子能谱测量的主要探测器,其探测效率曲线的准确性关系到实验结果的精度。本文采用^(252)Cf中子源的伴随γ射线和飞行时间法测... 详细信息

宏观检验实验是检验核数据正确性的重要实验方法之一。液体闪烁体中子探测器是中子核数据宏观检验实验中快中子能谱测量的主要探测器,其探测效率曲线的准确性关系到实验结果的精度。本文采用^(252)Cf中子源的伴随γ射线和飞行时间法测得了液体闪烁体对2.0~10.0 MeV中子的相对探测效率曲线,同时利用飞行时间法和400kV脉冲中子发生器的d-D反应中子源测得了2.9 MeV单能中子的绝对探测效率。将相对探测效率曲线归一到单能点的绝对效率,得到探测器在这一能区的绝对探测效率曲线。使用蒙特卡罗程序NEFF模拟相同参数的液体闪烁体探测器对10.0 MeV以下中子的探测效率曲线。最后将实验结果与模拟结果对比,结果表明实验得到的探测效率曲线合理、准确。

关键词：探测效率液体闪烁体飞行时间法蒙特卡罗模拟

Cross-section measurements for the^(58,60,61)Ni(n,α)^(55,57,58)Fe reactions at 8.50,9.50 and 10.50 MeV neutron energies

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Chinese Physics C 2022年第2期46卷 70-78页

作者： Haoyu Jiang Zengqi Cui Yiwei Hu Jie Liu Haofan Bai Jinxiang Chen Guohui Zhang Yu.M.Gledenov E.Sansarbayar G.Khuukhenkhuu L.Krupa I.Chuprakov xichao ruan Hanxiong Huang Jie Ren Qiwen Fan State Key Laboratory of Nuclear Physics and Technology Institute of Heavy Ion PhysicsSchool of PhysicsPeking UniversityBeijing 100871China Frank Laboratory of Neutron Physics Joint Institute for Nuclear ResearchDubna 141980Russia Nuclear Research Centre National University of MongoliaUlaanbaatarMongolia Flerov Laboratory of Nuclear Reactions Joint Institute for Nuclear ResearchDubna 141980Russia Institute of Experimental and Applied Physics Czech Technical University in PragueHorska 3a/22Prague 212800Czech Republic L.N.Gumilyov Eurasian National University Nur-sultan 010000Kazakhstan The Institute of Nuclear Physics Ministry of Energy of the Republic of KazakhstanAlmaty 050032Kazakhsta China Institute of Atomic Energy Beijing 102413China

Cross sections of the^(58,60,61)Ni(n,α)^(55,57,58)Fe reactions were measured at 8.50,9.50 and 10.50 MeV neutron energies based on the HI-13 tandem accelerator of China Institute of Atomic Energy(CIAE)with enriched^(58)Ni,^(60)Ni,and^(61)Ni foil samples with backings.A twin gridded ionization chamber(GIC)was used as the charged particle detector,and an EJ-309 liquid scintillator was used to obtain the neutron energy *** relative and absolute neutron fluxes were determined via three highly enriched^(238)U_(3)O_(8)samples inside the *** uncertainty of the present data of the^(58)Ni(n,α)^(55)Fe reaction is smaller than most existing *** present data of^(60)Ni(n,α)^(57)Fe and^(61)Ni(n,α)^(58)Fe reactions are the first measurement results above 8 *** present experimental data could be reasonably reproduced by calculations with TALYS-1.9 by adjusting several default values of theoretical model parameters.

关键词： cross-section measurements ^(58 60 61)Ni(n α)^(55 57 58) GIC CIAE