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高能电子三维成像技术实验研究

物理学报 2021年第18期70卷 154-161页

作者：李双双赵全堂曹树春冉朝晖申晓康赵书俊张子民郑州大学物理学院郑州450000 中国科学院近代物理研究所兰州730000 中国科学院大学核科学与技术学院北京100049

高能电子成像技术被首次提出作为温稠密物质和惯性约束聚变实验研究的高时空分辨诊断工具之一,现已通过前期实验证明其对中尺度科学诊断的可行性.为了进一步提高高能电子成像技术诊断样品的能力,来获取样品内部信息,将高能电子成像技术... 详细信息

高能电子成像技术被首次提出作为温稠密物质和惯性约束聚变实验研究的高时空分辨诊断工具之一,现已通过前期实验证明其对中尺度科学诊断的可行性.为了进一步提高高能电子成像技术诊断样品的能力,来获取样品内部信息,将高能电子成像技术和三维重建算法结合,提出了高能电子三维成像技术.本文主要通过实验研究了高能电子三维成像技术的可行性.不同三维重建算法重建样品的结果首次证实了高能电子三维成像技术的可行性,使用的三维重建算法包括滤波反投影算法、迭代算法-代数重建技术和联立代数重建技术,最终重建的x,y,z方向上的不同重建切片图像清楚地显示了样品的详细结构.实验证实的高能电子三维成像技术将有利于拓展高能电子成像技术的应用领域,尤其是在中尺度科学领域.

关键词：高能电子成像三维重建算法高能电子三维成像中尺度科学

“双碳”目标与中国能源转型思考(三)——我国非化石能源的快速发展

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中外能源 2022年第6期27卷 1-9页

作者：张抗苗淼张立勤中国石化石油勘探开发研究院北京100083 中国地质大学(北京) 北京100083 中国地质调查局油气资源调查中心北京100083

中国实现能源转型最关键的问题是是如何使低碳零碳的非化石能源取得快速、高质量的发展。目前我国水电发电量居世界首位,也居中国非化石能源发电量之首,在长江和黄河上游大规模的水电站群建设正蓬勃开展。除了大江大河中上游水电阶梯开... 详细信息

中国实现能源转型最关键的问题是是如何使低碳零碳的非化石能源取得快速、高质量的发展。目前我国水电发电量居世界首位,也居中国非化石能源发电量之首,在长江和黄河上游大规模的水电站群建设正蓬勃开展。除了大江大河中上游水电阶梯开发以外,中国同样重视中小水电站的发展。中国核电后来居上,以运营和在建核反应堆合计居世界第一位。中国在小型化非能动型压水堆核电新技术上有创新性发展,核电将为我国能源做出更大贡献。我国以中浅层地热能利用为主,地热资源开发可充分利用石油、煤炭行业的技术力量和闲置的钻机。我国风电光伏快速发展,成本逐渐降低,但发电量的不稳定性和日益增大的峰谷差,将对其大规模发展带来新的难题。中国近年来特别关注于海上风电的发展,海上风电新增装机容量连续3年处于世界领先地位。作为重要的二次能源,氢能产业快速发展,但目前主要依靠灰氢和蓝氢,应尽快转向以绿氢为主的发展轨道并降低其完全成本。煤炭基地与绿氢耦合发展的实践值得关注。应强调生物质能的综合利用,并进一步探索适合中国特色的发展方向。

关键词：能源转型非化石能源水电核电风电光伏绿氢

Measurements of differential and angle-integrated cross sections for the 10B（n, α）7Li reaction in the neutron energy range from 1.0 eV to 2.5 MeV

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Chinese Physics C 2019年第12期43卷 47-74页

作者： Haoyu Jiang Wei Jiang Huaiyong Bai Zengqi Cui Guohui Zhang Ruirui Fan HanYi Changjun Ning Liang Zhou Jingyu Tang Qi An Jie Bao Yu Bao Ping Cao Haolei Chen Qiping Chen Yonghao Chen Yukai Chen Zhen Chen Changqing Feng Keqing Gao Minhao Gu Changcai Han Zijie Han Guozhu He Yongcheng He Yang Hong Hanxiong Huang Weiling Huang Xiru Huang Xiaolu Ji Xuyang Ji Zhijie Jiang Hantao Jing Ling kang Mingtao kang Bo Li Chao Li Jiawen Li Lun Li Qiang Li Xiao Li Yang Li Rong Liu Shubin Liu Xingyan Liu Guangyuan Luan Qili Mu Binbin Qi Jie Ren Zhizhou Ren Xichao Ruan Zhaohui Song Yingpeng Song Hong Sun kang Sun Xiaoyang Sun Zhijia Sun Zhixin Tan Hongqing Tang Xinyi Tang Binbin Tian Lijiao Wang Pengcheng Wang Qi Wang Taofeng Wang Zhaohui Wang Jie Wen Zhongwei Wen Qingbiao Wu Xiaoguang Wu Xuan Wu Likun Xie Yiwei Yang Li Yu Tao Yu Yongji Yu Linhao Zhang Qiwei Zhang Xianpeng Zhang Yuliang Zhang Zhiyong Zhang Yubin Zhao Luping Zhou Zuying Zhou Danyang Zhu Kejun Zhu Peng Zhu State Key Laboratory of nuclear Physics and technology School of PhysicsPeking UniversityBeijing 100871China institute of High energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Particle Detection and Electronics Department of Modem Physics University of Science and Technology of ChinaHefei 230026China Key Laboratory of nuclear Data China Institute of Atomic EnergyBeijing 102413China institute of nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Northwest institute of nuclear technology Xi'an 710024China university of Chinese Academy of Sciences Beijing 100049China Department of Engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China School of Physics Beihang UniversityBeijing 100083China

Differential and angle-integrated cross sections for the 10B(n,α)^7 Li,10B(n,α0)^7 Li and 10B(n,α1)^7 Li^*reactions have been measured at CSNS Back-n white neutron *** enriched(90%)10B samples 5.0 cm in diameter and^85.0μg/cm^2 in thickness each with an aluminum backing were prepared,and back-to-back mounted at the sample *** charged particles were detected using the silicon-detector array of the Light-charged Particle Detector Array(LPDA)*** neutron energy En was determined by TOF(time-of-flight)method,and the valid a events were extracted from the En-Amplitude two-dimensional *** 15 silicon detectors,the differential cross sections of a-particles were measured from 19.2°to 160.8°.Fitted with the Legendre polynomial series,the(n,a)cross sections were obtained through *** absolute cross sections were normalized using the standard cross sections of the 10B(n,α)^7 Li reaction in the 0.3-0.5 MeV neutron energy *** measurement neutron energy range for the 10B(n,α)^7 Li reaction is 1.0 eV≤Enenergy points),and that for the 10B(n,α0)^7 Li and10B(n,α1)^7 Li^*reactions is 1.0 eV≤Enenergy points).The present results have been analyzed by the resonance reaction mechanism and the level structure of the 11B compound system,and compared with existing measurements and evaluations.

关键词： 10B(n,α)^7Li reaction cross sections LPDA CSNS Back-n white neutron source

Detector development at the Back-n white neutron source

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辐射探测技术与方法(英文) 2023年第2期7卷 171-191页

作者： Fan Ruirui Li Qiang Bao Jie Li Yang Liu Rong Jiang Wei Ren Jie Zhang Qiwei Cao Ping Gu Minhao Ren Zhizhou Yi Han Tang Jingyu An Qi Bai Haofan Bai Jiangbo Chen Qiping Chen Yonghao Chen Zhen Cui Zengqi Fan Anchuan Feng Changqing Feng Fanzhen Gao Keqing Han Changcai Han Zijie He Guozhu He Yongcheng Hong Yang Hu Yiwei Huang Hanxiong Jia Weihua Jiang Haoyu Jiang Zhijie Jin Zhengyao kang Ling Li Bo Li Chao Li Gong Li Jiawen Li Xiao Liu Jie Liu Shubin Luan Guangyuan Ning Changjun Qi Binbin Ruan Xichao Song Zhaohui Sun kang Tan Zhixin Tang Shengda Wang Pengcheng Wang Zhaohui Wen Zhongwei Wu Xiaoguang Wu Xuan Xie Likun Yang Yiwei Yu Yongji Zhang Guohui Zhang Linhao Zhang Mohan Zhang Xianpeng Zhang Yuliang Zhang Yue Zhang Zhiyong Zhao Maoyuan Zhou Luping Zhou Zhihao Zhu Kejun The CSNS Back-n Collaboration institute of High energy Physics CASBeijing 100049People’s Republic of China Spallation Neutron Source Science Center Dongguan 523803People’s Republic of China State Key Laboratory of Particle Detection and Electronics Beijing 100049People’s Republic of China Key Laboratory of nuclear Data China Institute of Atomic EnergyBeijing 102413People’s Republic of China institute of nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900People’s Republic of China Department of Modern Physics University of Science and Technology of ChinaHefei 230026People’s Republic of China State Key Laboratory of Particle Detection and Electronics Hefei 230026People’s Republic of China State Key Laboratory of nuclear Physics and technology School of PhysicsPeking UniversityBeijing 100871People’s Republic of China USTC archaeometry lab University of Science and Technology of ChinaHefei 230026People’s Republic of China Northwest institute of nuclear technology Xi’an 710024People’s Republic of China university of Chinese Academy of Sciences Beijing 100049People’s Republic of China 不详

Purpose Back-n is a white neutron beamline at china spallation neutron source,which was established in the year of *** is a powerful facility for nuclear data measurement,neutron detector calibration,and radiation effect *** A series of detectors were built for different experiments,including beam monitoring,beam profile measurement,neutron induced secondaries(fission fragments,light charged particles and gamma)cross section measurement,and neutron resonance radiography,etc.A common digitization electronics and a cluster-based DAQ were developed for these detector *** detectors have been employed at Back-n and serviced for experiments from the beginning of the beamline *** and conclusion As an overview of detectors of Back-n,the details of the detector design and the experiment performing are described in this *** developing systems,e.g.,MTPC and B-MCP,are also included.

关键词： White neutron source Beam diagnostics Fission fragment Charged particle Gamma Neutron resonance radiography

Neutron capture cross section of ^(169)Tm measured at the CSNS Back-n facility in the energy region from 30 to 300 keV

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Chinese Physics C 2022年第4期46卷 92-104页

作者： Jie Ren Xichao Ruan Wei Jiang Jie Bao Jincheng Wang Qiwei Zhang Guangyuan Luan Hanxiong Huang Yangbo Nie Zhigang Ge Qi An Huaiyong Bai Yu Bao Ping Cao Haolei Chen Qiping Chen Yonghao Chen Yukai Chen Zhen Chen Zengqi Cui Ruirui Fan Changqing Feng Keqing Gao Minhao Gu Changcai Han Zijie Han Guozhu He Yongcheng He Yang Hong Weiling Huang Xiru Huang Xiaolu Ji Xuyang Ji Haoyu Jiang Zhijie Jiang Hantao Jing Ling kang Mingtao kang Bo Li Chao Li Jiawen Li Lun Li Qiang Li Xiao Li Yang Li Rong Liu Shubin Liu Xingyan Liu Qili Mu Changjun Ning Binbin Qi Zhizhou Ren Yingpeng Song Zhaohui Song Hong Sun kang Sun Xiaoyang Sun Zhijia Sun Zhixin Tan Hongqing Tang Jingyu Tang Xinyi Tang Binbin Tian Lijiao Wang Pengcheng Wang Qi Wang Taofeng Wang Zhaohui Wang Jie Wen Zhongwei Wen Qingbiao Wu Xiaoguang Wu Xuan Wu Likun Xie Yiwei Yang Han Yi Li Yu Tao Yu Yongji Yu Guohui Zhang Linhao Zhang Xianpeng Zhang Yuliang Zhang Zhiyong Zhang Yubin Zhao Luping Zhou Zuying Zhou Danyang Zhu Kejun Zhu Peng Zhu Key Laboratory of nuclear Data China Institute of Atomic EnergyBeijing 102413China institute of High energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Particle Detection and Electronics 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 institute of nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Northwest institute of nuclear technology Xi'an 710024China university of Chinese Academy of Sciences Beijing 100049China Department of Engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China School of Physics Beihang UniversityBeijing 100083China

The capture cross sections of the ^(169)Tm(n,γ)reaction were measured at the back streaming white neutron beam line(Back-n)of the china Spallation Neutron Source(CSNS)using four C_(6)D_(6) liquid scintillation *** background subtraction,normalization,and correction were carefully considered in the data analysis to obtain accurate cross *** the resonance at 3.9 eV,the R-matrix code SAMMY was used to determine the resonance parameters with the internal normalization *** average capture cross sections of ^(169)Tm for energy between 30 and 300 keV were extracted relative to the ^(197)Au(n,γ)*** measured cross sections of the ^(169)Tm(n,γ)reaction were reported in logarithmically equidistant energy bins with 20 bins per energy decade with a total uncertainty of 5.4%-7.0% in this study and described in terms of average resonance parameters using a Hauser-Feshbach calculation with *** point-wise cross sections and the average resonance parameters showed fair agreement with the evaluated values of the ENDF/B-Ⅷ.0 library in the energy region studied.

关键词： ^(169)Tm(n,γ)^(170)Tm reaction capture cross section PHWT CSNS Back-n white neutron source

Measurement of differential cross sections of neutron-induced deuteron production reactions on carbon from 25 to 52 MeV

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Chinese Physics C 2021年第6期45卷 109-120页

作者： Zengqi Cui Haoyu Jiang kang Sun Guohui Zhang Ruirui Fan Wei Jiang Huaiyong Bai Yiwei Hu Jie Liu Han Yi Changjun Ning Zhijia Sun Jingyu Tang Qi An Jie Bao Yu Bao Ping Cao Haolei Chen Qiping Chen Yonghao Chen Yukai Chen Zhen Chen Changqing Feng Keqing Gao Minhao Gu Changcai Han Zijie Han Guozhu He Yongcheng He Yang Hong Hanxiong Huang Weiling Huang Xiru Huang Xiaolu Ji Xuyang Ji Zhijie Jiang Hantao Jing Ling kang Mingtao kang Bo Li Chao Li Jiawen Li Lun Li Qiang Li Xiao Li Yang Li Rong Liu Shubin Liu Xingyan Liu Guangyuan Luan Qili Mu Binbin Qi Jie Ren Zhizhou Ren Xichao Ruan Zhaohui Song Yingpeng Song Hong Sun Xiaoyang Sun Zhixin Tan Hongqing Tang Xinyi Tang Binbin Tian Lijiao Wang Pengcheng Wang Qi Wang Taofeng Wang Zhaohui Wang Jie Wen Zhongwei Wen Qingbiao Wu Xiaoguang Wu Xuan Wu Likun Xie Yiwei Yang Li Yu Tao Yu Yongji Yu Linhao Zhang Qiwei Zhang Xianpeng Zhang Yuliang Zhang Zhiyong Zhang Yubin Zhao Luping Zhou Zuying Zhou Danyang Zhu Kejun Zhu Peng Zhu State Key Laboratory of nuclear Physics and technology School of PhysicsPeking UniversityBeijing 100871China institute of High energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China university of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Particle Detection and Electronics Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Key Laboratory of nuclear Data China Institute of Atomic EnergyBeijing 102413China institute of nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Northwest institute of nuclear technology Xi'an 710024China Department of Engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China School of Physics Beihang UniversityBeijing 100083China

The angle-differential cross sections of neutron-induced deuteron production from carbon were measured at six neutron energies from 25 to 52 MeV relative to those of n-p elastic scattering at the china Spallation Neutron Source(CSNS)Back-n white neutron *** employing theΔE-E telescopes of the Light-charged Particle Detector Array(LPDA)system at 15.1°to 55.0°in the laboratory system,ratios of the angle-differential cross sections of the ^(12)C(n,xd)reactions to those of the n-p scattering were measured,and then,the angle-differential cross sections of the ^(12)C(n,xd)reactions were obtained using the angle-differential cross sections of the n-p elastic scattering from the JENDL-4.0/HE-2015 library as the *** obtained results are compared with data from previous measurements,all of which are based on mono-energic neutrons,the evaluated data from the JENDL-4.0/HE-2015 library and the ENDF-B/VIII.0 library,and those from theoretical calculations based on INCA code and Talys-1.9 *** the first white-neutron-source-based systematic measurement of the angle-differential cross sections of neutron-induced deuteron production reactions on carbon in several tens of MeV,the present work can provide a reference to the data library considering the lack of experimental data.

关键词： ^(12)C(n,xd)reactions relative angle-differential cross sections CSNS Back-n white neutron source LPDA

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偏压技术在金刚石薄膜制备中应用的进展

材料研究学报 2022年第3期36卷 161-174页

作者：邵思武郑宇亭安康黄亚博陈良贤刘金龙魏俊俊李成明北京科技大学新材料技术研究院北京100083 北京科技大学顺德研究生院广东528399

近年来,用偏压技术进行异质外延单晶金刚石生长并将其尺寸增大到英寸级以上。偏压技术强大的形核能力使其也可用于制备取向金刚石薄膜、纳米金刚石薄膜和超纳米金刚石薄膜。本文综述了国内外关于偏压技术的机理以及偏压的形式和设备等... 详细信息

近年来,用偏压技术进行异质外延单晶金刚石生长并将其尺寸增大到英寸级以上。偏压技术强大的形核能力使其也可用于制备取向金刚石薄膜、纳米金刚石薄膜和超纳米金刚石薄膜。本文综述了国内外关于偏压技术的机理以及偏压的形式和设备等方面的研究现状,以及表面反应模型、热尖峰模型和亚层注入模型的机理。常用的偏压包括直流偏压、直流脉冲偏压、脉冲叠合偏压和双极性脉冲偏压。还介绍了偏压对金刚石薄膜组织和性能的影响,详细阐述了其对取向生长,二次形核率,无定形碳-石墨-金刚石相转变以及生长速率和结合力的作用规律和机理。加偏压能改变轰击粒子能量和特定基团的浓度、影响金刚石相的转变和晶粒取向和尺寸,进而影响金刚石薄膜的光,力,热,电学性能。还讨论了目前研究工作中存在的一些不足,如偏压作用的机理仍不清晰,对电子浓度变化,氢原子刻蚀的作用尚缺少明确的解释等。最后展望了偏压技术在金刚石制备领域未来的研究和应用方向。

关键词：评述化学气相沉积偏压金刚石薄膜异质外延生长

用于开展几倍库仑势垒能区放射性核束直接核反应实验的探测系统的设计与模拟

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原子核物理评论 2023年第2期40卷 244-250页

作者：王萱轩宋海声杨过段芳芳王康杨彦云西北师范大学物理与电子工程学院兰州730070 中国科学院近代物理研究所兰州730000 中国科学院大学核科学与技术学院北京100049

基于放射性核束物理的研究需求以及兰州重离子加速器国家实验室兰州放射性束流线(HIRFL-RIBLL1)的实际情况,本工作设计了一套高效率的带电粒子探测系统。该系统由6套探测模块组成,每套探测模块均为DSSD+PSD+CsI(T1)三层结构。利用Geant... 详细信息

基于放射性核束物理的研究需求以及兰州重离子加速器国家实验室兰州放射性束流线(HIRFL-RIBLL1)的实际情况,本工作设计了一套高效率的带电粒子探测系统。该系统由6套探测模块组成,每套探测模块均为DSSD+PSD+CsI(T1)三层结构。利用Geant4模拟给出了整套探测系统的几何效率,得到了探测系统的最佳设计方案,之后模拟完成了E_(lab)=125 MeV的^(7)Be在^(208)Pb靶上的弹性散射和破裂反应实验,并对模拟实验结果进行数据分析得到了弹性散射和破裂反应事件的统计分布。

关键词：探测系统 Geant4 几何效率弹性散射破裂反应

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CSNS伴生质子束实验平台控制系统研制

核电子学与探测技术 2023年第1期43卷 49-55页

作者：何泳成吴煊张玉亮朱鹏王林薛康佳中国科学院高能物理研究所北京100049 散裂中子源科学中心东莞523803 中国科学院大学北京100049

中国散裂中子源(CSNS)伴生质子束实验平台是利用直线加速器伴生的弱流中能质子建设的质子辐照应用平台。使用国产PLC和控制器,研制了基于EPICS软件架构的控制系统。该控制系统主要由运动控制系统和真空控制系统两部分组成,实现了对伴生... 详细信息

中国散裂中子源(CSNS)伴生质子束实验平台是利用直线加速器伴生的弱流中能质子建设的质子辐照应用平台。使用国产PLC和控制器,研制了基于EPICS软件架构的控制系统。该控制系统主要由运动控制系统和真空控制系统两部分组成,实现了对伴生质子束实验平台主要设备的监测和控制,现场运行稳定可靠,很好地满足了伴生质子束实验平台的需要。

关键词：中国散裂中子源伴生质子束实验平台控制系统国产PLC EPICS