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Development and Preliminary Application of Double Antibody Sandwich EliSA for Detection of Swine Vesicular Disease Virus

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Animal Husbandry and Feed Science 2011年第4期3卷 24-26,42页

作者： wu guo-hua yan xin-min zhao zhi-xun cui li-fan li jian zhu hai-xia zhu cai-zhu zhang qiang State Key Laboratory of Veterinary Etiological Biology National Foot and Mouth Disease Reference Laboratory Lanzhou Veterinary Research In-stitute Chinese Academy of Agricultural Sciences Lanzhou 730046 China

[Objective] The aim of this study was to develop an indirect sandwich EUSA method for detection of swine vesicular disease virus （SVDV）. [Method] High titer serum against SVDV was prepared respectively by inoculated rabbits and guinea pigs with purified virus. To develop an indirect sandwich EliSA, the optimum concentrations of capture antibody, detection antibody, enzyme conjugate and standard antigen were determined using block titration, and positive threshold value was also determined. The specificity, sensitivity and repeatability of the developed IEliSA were evaluated using cross-reaction test, comparison test and intra-assay repeated test. In addition, standard samples and clinical samples were detected by this method. [ Result] The best working conditions of the developed EliSA are as follows： capture antibody, 1：400; detection antibody, 1 ： 200; enzyme conjugate, 1 ： 8 000; and standard antigen, 1 ： 4. The positive threshold value was found to be 0.20. For the detection by the developed EUSA, no cross-reaction with foot and mouth disease was observed. The developed EliSA had close sensitivity with EliSA recommended by the World Organisation for Animal Health （OIE） but had sensitivity 2 -4 times higher than that of reverse indirect hernagglutination test. In addition, the developed method also had good reproducibility, and the detection results of standard samples were in line withtheir own background. All the 36 clinical samples were negative in the developed EliSA. [ Conclusion] The developed indirect sandwich EliSA can be used for diagnosis of swine vesicular disease.

关键词： Swine vesicular disease virus Sandwich EliSA Diagnosis

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Clinical trial with traditional Chinese medicine intervention ''tonifying the kidney to promote liver regeneration and repair by affecting stem cells and their microenvironment'' for chronic hepatitis B-associated liver failure

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World Journal of Gastroenterology 2014年第48期20卷 18458-18465页

作者： Han-min li zhi-hua Ye Jun zhang xiang Gao yan-ming Chen xin Yao jian-xun Gu Lei Zhan yang Ji jian-liang Xu Ying-He Zeng fan yang lin xiao guo-Guang Sheng Wei xin Qi Long Qing-Jing zhu zhao-Hong Shi lian-guo Ruan Jia-Yao yang Chang-Chun li Hong-Bin wu Sheng-Duo Chen xin-La Luo Hepatopathy Institute Affiliated Hospital of Hubei University of Chinese Medicine Hubei University of Chinese Medicine Jingzhou Hospital of Traditional Chinese Medicine Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency School of Pharmaceutical Science and Technology Tianjin University

AIM:To study the clinical efficacy of traditional Chinese medicine(TCM)intervention"tonifying the kidney to promote liver regeneration and repair by affecting stem cells and their microenvironment"("TTK")for treating liver failure due to chronic hepatitis ***:We designed the study as a randomized controlled clinical *** number of Chinese Clinical Trial Registry is Chi CTR-TRC-12002961.A total of 144 patients with liver failure due to infection with chronic hepatitis B virus were enrolled in this randomized controlled clinical *** were randomly assigned to the following three groups:(1)a modern medicine control group(MMC group,36patients);(2)a"tonifying qi and detoxification"("TQD")group(72 patients);and(3)a"tonifying the kidney to promote liver regeneration and repair by affecting stem cells and their microenvironment"("TTK")group(36patients).Patients in the MMC group received general internal medicine treatment;patients in the"TQD"group were given a TCM formula"tonifying qi and detoxification"and general internal medicine treatment;patients in the"TTK"group were given a TCM formula of"TTK"and general internal medicine *** participants were treated for 8 wk and then followed at 48 wk following their final *** primaryefficacy end point was the patient fatality rate in each *** of various virological and biochemical indicators served as secondary *** one-way analysis of variance and the t-test were used to compare patient outcomes in the different treatment ***:At the 48-wk post-treatment time point,the patient fatality rates in the MMC,"TQD",and"TTK"groups were 51.61%,35.38%,and 16.67%,respectively,and the differences between groups were statistically significant(P0.05).Patients in the"TTK"group had significantly higher levels of serum to

关键词： Clinical study 'Tonifying the kidney to promote liver regeneration and repair by affecting stem cells and their microenvironment'('TTK') liver regeneration Treatment with integrated traditional and Western medicine Chronic hepatitis B-associated liver failure

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Paired quasi-periodic pulsations of hard X-ray emission in a solar flare

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Science China(Physics,Mechanics & Astronomy) 2023年第5期66卷 195-206页

作者： hai-Sheng zhao Dong li Shao-lin Xiong yan-Qiu zhang yang Su Wei Chen Yi zhao xiao-Bo li Jia-Cong liu Wen-Xi Peng Rui Qiao xin-Qiao li xiang-yang Wen li-ming Song Shi-Jie Zheng xin-Ying Song xiao-Yun zhao Yue huang Shuang-Nan zhang Shuo xiao Ce cai Zheng-hua An Can Chen Gang Chen Wei Chen yan-Qi Du min Gao Ke Gong Dong-Ya guo zhi-Wei guo jian-jian He Bin li Chao li Chao-yang li Gang li jian-Hui li Lu li Qing-xin li yan-guo li Jing liang xiao-hua liang Jin-Yuan liao xiao-Jing liu Ya-Qing liu Qi Luo xiang Ma Bin Meng Ge Ou Dong-li Shi Jing-yan Shi Gong-xing Sun Xi-Lei Sun You-li Tuo Chen-Wei Wang Hui Wang Jin Wang Jin-Zhou Wang Ping Wang Wen-Shuai Wang Hong wu Sheng-Lun Xie yan-Bing Xu Yu-Peng Xu Wang-Chen Xue Sheng yang min Yao jian-Ying Ye Qi-Bin Yi Chao-Yue zhang Da-li zhang fan zhang Fei zhang Hong-Mei zhang Kai zhang Peng zhang xiao-Lu zhang Zhen zhang guo-Ying zhao Shi-Yi zhao Chao Zheng xing Zhou Yue zhu Key Laboratory for Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China University of Chinese Academy of Sciences Beijing 100049China Department of Astronomy Beijing Normal UniversityBeijing 100875China School of Computing and Artificial Intelligence Southwest Jiaotong UniversityChengdu 611756China Physics and Space Science College China West Normal UniversityNanchong 637002China Key Laboratory of Stellar and Interstellar Physics and Department of Physics Xiangtan UniversityXiangtan 411105China Institute of Astrophysics Central China Normal UniversityWuhan 430079China School of Physics Changchun University of Science and TechnologyChangchun 130022China College of Physics and Engineering Qufu Normal UniversityQufu 273165China College of Physics Sciences&Technology Hebei UniversityBaoding 071002China

We investigate high time resolution data obtained by the Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor(GECAM)during the flare event on 2022 April 21 at 01:52 *** subpeaks with durations of 4-6 s have been detected in the hard X-ray precursor phase,and the key feature is that they appear in pairs and seem like double-peak *** subpeaks are rarely observed in hard X-ray band and confirmed by the microwave obtained by Nobeyama Radio Polarimeters(NoRP)and Radio Solar Telescope Network(RSTN).While an exponential function can describe the continuum component of the time profile from the precursor to part of the impulsive *** periods of quasi-periodic pulsations(QPPs)are detected to be about 7.3 and 12.8 s for the precursor and impulsive phase,respectively,with at least 95%confidence *** paired QPPs are assumed to be double-peak QPPs and then the scenario of current loop coalescence model is found to be in good agreement with our *** precursor phase can be interpreted as the oscillating coalescence of two islands,while the impulsive phase can be interpreted as more islands to coalesce one by one to form larger islands.

关键词： solar flare QPPs loop coalescence circular-ribbon flare

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Frontiers in high entropy alloys and high entropy functional materials

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Rare Metals 2024年第10期43卷 4639-4776页

作者： Wen-Tao zhang Xue-Qian Wang Feng-Qi zhang xiao-Ya cui Bing-Bing fan Jia-ming guo zhi-min guo Rui huang Wen huang Xu-Bo li Meng-Ru li yan Ma zhi-hua Shen Yong-Gang Sun De-Zhuang Wang Fei-yang Wang li-qiang Wang Nan Wang Tian-li Wang Wei Wang xiao-yang Wang Yi-Han Wang Fu-Jie Yu Yu-Zhen Yin ling-Kun zhang Yi zhang jian-yang zhang Qi zhao Yu-Ping zhao xin-Dong zhu Yasir Sohail Ya-Nan Chen Tao Feng Qi-Long Gao hai-yan He Yong-jiang huang Zeng-Bao Jiao hua Ji Yao jiang qiang li xiao-ming li Wei-Bing liao huai-Jun lin Hui liu Qi liu Qing-Feng liu Wei-Di liu Xiong-Jun liu yang Lu Yi-Ping Lu Wen Ma Xue-Fei Miao Jie Pan Qing Wang Hong-Hui wu Yuan wu Tao yang Wei-ming yang Qian Yu Jin-Yu zhang zhi-Gang Chen liang Mao yang Ren Bao-Long Shen xun-li Wang Zhe Jia He zhu Zhen-Duo wu Si Lan School of Materials Science and Engineering Nanjing University of Science and TechnologyNanjing 210094China jiangsu Key Laboratory for Advanced Metallic Materials School of Materials Science and EngineeringSoutheast UniversityNanjing 211189China Department of Physics City University of Hong KongHongKong 999077China School of Materials Science and Engineering Tianjin UniversityTianjin 300072China School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China Department of Mechanical Engineering Research Institute for Advanced ManufacturingThe Hong Kong Polytechnic UniversityHong Kong 100872China Center of Electron Microscopy and State Key Laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China Key Laboratory of Solidification Control and Digital Preparation Technology(liaoning Province) School of Materials Science and EngineeringDalian University of TechnologyDalian 116024China Institute of Advanced Wear&Corrosion Resistance and Functional Materials Jinan UniversityGuangzhou 510632China School of Mechanics and Civil Engineering China University of Mining and TechnologyXuzhou 221116China School of Physical Sciences Great Bay UniversityDongguan 523000China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Beijing Advanced Innovation Center for Materials Genome Engineering Research Institute for Carbon NeutralityUniversity of Science and Technology BeijingBeijing 100083China Department of Mechanical Engineering The University of Hong KongHong Kong 999077China School of Computing Macquarie UniversitySydney 2113Australia Key Laboratory of Optoelectronic Devices and Systems of ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China State Key Laborato

Owing to their exceptional properties,high-entropy alloys(HEAs)and high-entropy materials have emerged as promising research areas and shown diverse ***,the recent advances in the field are comprehensively reviewed,organized into five *** first section introduces the background of HEAs,covering their definition,significance,application prospects,basic properties,design principles,and *** subsequent section focuses on cutting-edge high-entropy structural materials,highlighting developments such as nanostructured alloys,grain boundary engineering,eutectic systems,cryogenic alloys,thin films,micro-nano-lattice structures,additive manufacturing,high entropy metallic glasses,nano-precipitate strengthened alloys,composition modulation,alloy fibers,and refractory *** the following section,the emphasis shifts to functional materials,exploring HEAs as catalysts,magneto-caloric materials,corrosion-resistant alloys,radiation-resistant alloys,hydrogen storage systems,and materials for ***,the review encompasses functional high-entropy materials outside the realm of alloys,including thermoelectric,quantum dots,nanooxide catalysts,energy storage materials,negative thermal expansion ceramics,and high-entropy wave absorption *** paper concludes with an outlook,discussing future directions and potential growth areas in the *** this comprehensive review,researchers,engineers,and scientists may gain valuable insights into the recent progress and opportunities for further exploration in the exciting domains of high-entropy alloys and functional materials.

关键词： High entropy alloys Cutting-edge structural materials Cutting-edgefunctional materials

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Nondestructive technique for identifying nuclides using neutron resonance transmission analysis at CSNS Back-n

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Nuclear Science and Techniques 2024年第1期35卷 178-187页

作者： Sheng-Da Tang Yong-Hao Chen Jing-Yu Tang Rui-Rui fan qiang li Gong li Dong liu Zheng-Yao Jin xing-zhu cui Tian-xiang Chen Yi-Wei yang Rong liu Han Yi yang li Zhen yang Qi An Hao-fan Bai jiang-Bo Bai Jie Bao Ping Cao Qi-Ping Chen Zhen Chen Zeng-Qi cui An-Chuan fan Chang-Qing Feng fan-Zhen Feng Ke-Qing Gao min-Hao Gu Chang-cai Han Zi-Jie Han guo-zhu He Yong-Cheng He yang Hong Yi-Wei Hu Han-Xiong huang Wei-hua Jia Hao-yu jiang Wei jiang zhi-jie jiang ling Kang Bo li Chao li Jia-Wen li xiao li Jie liu Shu-Bin liu Guang-Yuan Luan Chang-Jun Ning Bin-Bin Qi Jie Ren zhi-Zhou Ren Xi-Chao Ruan zhao-Hui Song Kang Sun zhi-xin Tan li-Jiao Wang Peng-Cheng Wang zhao-Hui Wang Zhong-Wei Wen xiao-Guang wu Xuan wu li-Kun Xie Yong-Ji Yu guo-Hui zhang lin-Hao zhang Mo-Han zhang Qi-Wei zhang xian-Peng zhang Yu-liang zhang Yue zhang zhi-Yong zhang Mao-Yuan zhao Lu-Ping Zhou zhi-Hao Zhou Ke-Jun zhu Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China Institute of High-Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China USTC Archaeometry Laboratory University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China 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 Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China

Nondestructive and noninvasive neutron assays are essential applications of neutron *** resonance transmission analysis(NRTA)is a powerful nondestructive method for investigating the elemental composition of an *** back-streaming neutron line(Back-n)is a newly built time-of-flight facility at the China Spallation Neutron Source(CSNS)that provides neutrons in the eV to 300 MeV range.A feasibility study of the NRTA method for nuclide identification was conducted at the CSNS Back-n via two test *** results demonstrate that it is feasible to identify different elements and isotopes in samples using the NRTA method at *** study reveals its potential future applications.

关键词： CSNS White neutron beam NRTA Nuclide identification Nondestructive method

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The first data release(DR1) of the LAMOST regular survey

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Research in Astronomy and Astrophysics 2015年第8期15卷 1095-1124页

作者： A-li Luo Yong-Heng zhao Gang zhao li-cai Deng xiao-Wei liu Yi-Peng Jing Gang Wang Hao-Tong zhang jian-Rong Shi xiang-Qun cui Yao-Quan Chu guo-Ping li Zhong-Rui Bai Yue wu yan cai Shu-Yun Cao Zi-huang Cao Jeffrey L.Carlin hai-Yuan Chen jian-Jun Chen Kun-xin Chen li Chen Xue-Lei Chen xiao-yan Chen Ying Chen Norbert Christlieb Jia-Ru Chu Chen-Zhou cui Yi-Qiao Dong Bing Du Dong-Wei fan Lei Feng jian-Ning Fu Peng Gao Xue-Fei Gong Bo-Zhong Gu yan-xin guo Zhan-Wen Han Bo-liang He Jin-liang Hou Yong-Hui Hou Wen Hou Hong-Zhuan Hu Ning-Sheng Hu Zhong-Wen Hu zhi-Ying Huo Lei Jia fang-hua jiang xiang jiang zhi-Bo jiang Ge Jin xiao Kong Xu Kong Ya-Juan Lei Ai-hua li Chang-hua li Guang-Wei li hai-Ning li jian li Qi li Shuang li Sha-Sha li xin-Nan li yan li Yin-Bi li Ye-Ping li Yuan liang Chien-Cheng lin Chao liu Gen-Rong liu Guan-Qun liu zhi-Gang liu Wen-zhi Lu Yu Luo Yin-Dun Mao Heidi Newberg Ji-Jun Ni zhao-xiang Qi Yong-Jun Qi Shi-Yin Shen Huo-ming Shi Jing Song Yi-Han Song Ding-qiang Su Hong-Jun Su Zheng-Hong Tang Qing-Sheng Tao Yuan Tian Dan Wang Da-Qi Wang Feng-Fei Wang guo-min Wang hai Wang Hong-Chi Wang jian Wang Jia-Ning Wang jian-ling Wang jian-Ping Wang Jun-xian Wang Lei Wang Meng-xin Wang Shou-Guan Wang Shu-Qing Wang xia Wang Ya-Nan Wang You Wang Yue-Fei Wang You-Fen Wang Peng Wei ming-zhi Wei Hong wu Ke-Fei wu Xue-Bing wu Yu-Zhong wu xiao-Zheng xing ling-Zhe Xu xin-Qi Xu yan Xu Tai-Sheng yan De-hua yang hai-Feng yang Hui-Qin yang ming yang Zheng-Qiu Yao Yong Yu Hui Yuan hai-Bo Yuan hai-Long Yuan Wei-min Yuan Chao Zhai En-Peng zhang hua-Wei zhang jian-Nan zhang li-Pin zhang Wei zhang Yong zhang yan-xia zhang Zheng-Chao zhang ming zhao fang Zhou Xu Zhou Jie zhu Yong-Tian zhu Si-Cheng Zou fang Zuo National Astronomical Observatories Chinese Academy of Sciences Department of Astronomy Peking University Shanghai Astronomical Observatory Chinese Academy of Sciences Nanjing Institute of Astronomical Optics & Technology National Astronomical ObservatoriesChinese Academy of Sciences University of Science and Technology of China Department of Physics Applied Physics and AstronomyRensselaer Polytechnic InstituteTroyNY 12180USA Department of Physics and Astronomy Earlham CollegeRichmondIN 47374USA Universitt Heidelberg Zentrum für AstronomieLandessternwarteKnigstuhl 1269117 HeidelbergGermany Department of Astronomy Beijing Normal University Yunnan Observatories Chinese Academy of Sciences Purple Mountain Observatory Chinese Academy of Sciences

The Large sky Area Multi-Object Fiber Spectroscopic Telescope（LAMOST） general survey is a spectroscopic survey that will eventually cover approximately half of the celestial sphere and collect 10 million spectra of stars, galaxies and QSOs. Objects in both the pilot survey and the first year regular survey are included in the LAMOST DR1. The pilot survey started in October 2011 and ended in June 2012, and the data have been released to the public as the LAMOST Pilot Data Release in August 2012. The regular survey started in September 2012, and completed its first year of operation in June 2013. The LAMOST DR1 includes a total of 1202 plates containing 2 955 336 spectra, of which 1 790 879 spectra have observed signalto-noise ratio（SNR） ≥ 10. All data with SNR ≥ 2 are formally released as LAMOST DR1 under the LAMOST data policy. This data release contains a total of 2 204 696 spectra, of which 1 944 329 are stellar spectra, 12 082 are galaxy spectra and 5017 are quasars. The DR1 not only includes spectra, but also three stellar catalogs with measured parameters： late A,FGK-type stars with high quality spectra（1 061 918 entries）, A-type stars（100 073 entries）, and M-type stars（121 522 entries）. This paper introduces the survey design, the observational and instrumental limitations, data reduction and analysis, and some caveats. A description of the FITS structure of spectral files and parameter catalogs is also provided.

关键词： techniques: spectroscopic survey—data release—catalog

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Measurement of the neutron total cross section of carbon at the Back-n white neutron beam of CSNS

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Nuclear Science and Techniques 2019年第9期30卷 73-82页

作者： xing-yan liu Yi-Wei yang Rong liu Jie Wen Zhong-Wei Wen Zi-Jie Han zhi-Zhou Ren Qi An huai-Yong Bai Jie Bao Ping Cao Qi-Ping Chen Yong-Hao Chen Pin-Jing Cheng Zeng-Qi cui Rui-Rui fan Chang-Qing Feng min-Hao Gu Feng-Qin guo Chang-cai Han guo-zhu He Yong-Cheng He Yue-Feng He Han-Xiong huang Wei-ling huang Xi-Ru huang xiao-Lu Ji Xu-yang Ji Hao-Yu jiang Wei jiang Han-Tao Jing ling Kang ming-Tao Kang Bo li Lun li qiang li xiao li yang li yang li Shu-Bin liu Guang-Yuan Luan Ying-lin Ma Chang-Jun Ning Bin-Bin Qi Jie Ren Xi-Chao Ruan zhao-Hui Song Hong Sun xiao-yang Sun zhi-Jia Sun zhi-xin Tan Hong-Qing Tang Jing-Yu Tang Peng-Cheng Wang Qi Wang Tao-Feng Wang yan-Feng Wang zhao-Hui Wang Zheng Wang Qing-Biao wu xiao-Guang wu Xuan wu li-Kun Xie Han Yi li Yu Tao Yu Yong-Ji Yu guo-Hui zhang Jing zhang lin-Hao zhang li-Ying zhang Qing-min zhang Qi-Wei zhang xian-Peng zhang Yu-liang zhang zhi-Yong zhang Ying-Tan zhao liang Zhou Zu-Ying Zhou Dan-yang zhu Ke-Jun zhu Peng zhu Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics State Key Laboratory of Particle Detection and Electronics Chinese Academy of Sciences(CAS) Department of Modern Physics University of Science and Technology of China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking University Key Laboratory of Nuclear Data China Institute of Atomic Energy Institute of High Energy Physics Chinese Academy of Sciences(CAS) Spallation Neutron Source Science Center University of South China Northwest Institute of Nuclear Technology Department of Engineering and Applied Physics University of Science and Technology of China Beihang University Xi’an Jiaotong University

To verify the performance of the neutron total cross-sectional spectrometer, the neutron total cross section of carbon is initially measured in the energy range of 1 eV to 20 MeV using the time-of-flight method. The measurement is performed at the Back-n white neutron source with a 76-m time-of-flight path using the China Spallation Neutron Source. A multilayer fast fission chamber with 235U and 238U is employed as the neutron detector. The diameter and thickness of the natural graphite sample are 70 mm and 40 mm, respectively. Signal waveforms are collected using a data acquisition system. Off-line data processing was used to obtain the neutron time-of-flight spectra and transmissions. The uncertainty of the counting statistics is generally approximately 3% for each bin in the energy range of 1–20 MeV. It is determined that the results for the neutron total cross section of carbon obtained using ^235U cells are in good agreement with the results obtained using 238U cells within limits of statistical uncertainty. Moreover, the measured total cross sections show good agreement with the broadening evaluated data.

关键词： CSNS Back-n white neutron source NTOX Neutron total cross section Carbon Multilayer fast fission chamber

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Study of the response of 10B-doped MCP to wide-energy range neutrons from eV to MeV

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Nuclear Science and Techniques 2024年第8期35卷 132-141页

作者： qiang li li‑Jiao Wang xiang‑Biao Qiu Jing‑Wen li Wei Xu Tao li Ze‑Bin lin Chang‑Jun Ning Yong‑Hao Chen Rui‑Rui fan Kang Sun Jing‑Yu Tang Rong zhang Han‑Tao Jing Bo Mei Qi An Hao‑fan Bai jiang‑Bo Bai Jie Bao Ping Cao Qi‑Ping Chen Zhen Chen Zeng‑Qi cui An‑Chuan fan Chang‑Qing Feng fan‑Zhen Feng Ke‑Qing Gao min‑Hao Gu Chang‑cai Han Zi‑Jie Han guo‑zhu He Yong‑Cheng He yang Hong Yi‑Wei Hu Han‑Xiong huang Wei‑hua Jia Hao‑Yu jiang Wei jiang zhi‑Jie jiang Zheng‑Yao Jin ling Kang Bo li Chao li Gong li Jia‑Wen li xiao li yang li Jie liu Rong liu Shu‑Bin liu Guang‑Yuan Luan Bin‑Bin Qi Jie Ren zhi‑Zhou Ren Xi‑Chao Ruan zhao‑Hui Song zhi‑xin Tan Sheng‑Da Tang Peng‑Cheng Wang zhao‑Hui Wang Zhong‑Wei Wen xiao‑Guang wu Xuan wu li‑Kun Xie Yi‑Wei yang Han Yi Yong‑Ji Yu guo‑Hui zhang lin‑Hao zhang Mo‑Han zhang Qi‑Wei zhang xian‑Peng zhang Yu‑liang zhang Yue zhang zhi‑Yong zhang Mao‑Yuan zhao Lu‑Ping Zhou zhi‑Hao Zhou Ke‑Jun zhu 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 Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Dongguan Songshan Lake Future School Dongguan 523808China North Night Vision Science&Technology(Nanjing)Research Institute Co.Ltd. Nanjing 211106China Sino‑French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China 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 Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China USTC Archaeometry Lab University of Science and Technology of ChinaHefei 230026China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China

Neutron-sensitive microchannel plates(nMCPs)have applications in neutron detection,including energy spectrum measurements,neutron-induced cross sections,and neutron imaging.10B-doped MCPs(B-MCPs)have attracted significant attention owing to their potential for exhibiting a high neutron detection efficiency over a large neutron energy *** spatial and temporal resolutions are useful for neutron energy-resolved ***,their practical applications still face many technical *** this study,a B-MCP with 10 mol%10B was tested for its response to wide-energy neutrons from eV to MeV at the Back-n white neutron source at the China Spallation Neutron *** neutron detection efficiency was calibrated at 1 eV,which is approximately 300 times that of an ordinary MCP and indicates the success of 10 B *** factors that caused the reduction in the detection efficiency were simulated and *** neutron energy spectrum obtained using B-MCP was compared with that obtained by other measurement methods,and showed very good consistency for neutron energies below tens of *** response is more complicated at higher neutron energy,at which point the elastic and nonelastic reactions of all nuclides of B-MCP gradually become *** is beneficial for the detection of neutrons,as it compensates for the detection efficiency of B-MCP for high-energy neutrons.

关键词： Neutron radiation image 10B-doped MCP Neutron response Wide-energy range neutrons

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Measurement of the ^(232)Th(n,f)cross section in the 1-200 MeV range at the CSNS Back-n

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Nuclear Science and Techniques 2023年第8期34卷 142-153页

作者： zhi-Zhou Ren Yi-Wei yang Yong-Hao Chen Rong liu Bang-Jiao Ye Jie Wen hai-Rui guo Zi-Jie Han Qi-Ping Chen Zhong-Wei Wen Wei-li Sun Han Yi xing-yan liu Tao Ye jiang-Bo Bai Qi An Jie Bao Yu Bao Ping Cao Hao-Lei Chen Zhen Chen Zeng-Qi cui Rui-Rui fan Chang-Qing Feng Ke-Qing Gao xiao-Long Gao min-Hao Gu Chang-cai Han guo-zhu He Yong-Cheng He yang Hong Yi-Wei Hu Han-Xiong huang Xi-Ru huang Hao-Yu jiang Wei jiang zhi-Jie jiang Han-Tao Jing ling Kang Bo li Chao li Jia-Wen li qiang li xiao li yang li Jie liu Shu-Bin liu Ze Long Guang-Yuan Luan Chang-Jun Ning Meng-Chen Niu Bin-Bin Qi Jie Ren Xi-Chao Ruan zhao-Hui Song Kang Sun zhi-Jia Sun zhi-xin Tan Jing-Yu Tang xin-Yi Tang Bin-Bin Tian li-Jiao Wang Peng-Cheng Wang zhao-Hui Wang xiao-Guang wu Xuan wu li-Kun Xie xiao-Yun yang li Yu Tao Yu Yong-Ji Yu guo-Hui zhang lin-Hao zhang Qi-Wei zhang xian-Peng zhang Yu-liang zhang zhi-Yong zhang Lu-Ping Zhou zhi-Hao Zhou Ke-Jun zhu Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China Institute of Applied Physics and Computational Mathematics Beijing 100088China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230027China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China 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 PhysicsChinese Academy of SciencesBeijingChina 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

The ^(232)Th(n,f)cross section is very important in basic nuclear physics and applications based on the Th/U fuel *** the time-of-flight method and a multi-cell fast-fission ionization chamber,a novel measurement of the^(232)Th(n,f)cross sec-tion relative to^(235)U in the 1–200 MeV range was performed at the China Spallation Neutron Source Back-n white neutron source(Back-n).The fission event-neutron energy spectra of^(232)Th and^(235)U fission cells were measured in the single-bunch *** 232Th/235U fission cross-sectional ratios were obtained,and the measurement uncertainties were 2.5–3.7%for energies in the 2–20 MeV range and 3.6–6.2%for energies in the 20–200 MeV ***^(232)Th(n,f)cross section was obtained by introducing the standard cross section of^(235)U(n,f).The results were compared with those of previous theoreti-cal calculations,measurements,and *** measured 232Th fission cross section agreed with the main evaluation results in terms of the experimental uncertainty,and 232Th fission resonances were observed in the 1–3 MeV *** present results provide^(232)Th(n,f)cross-sectional data for the evaluation and design of Th/U cycle nuclear systems.

关键词： 232Th(n f)cross section Fast-fission ionization chamber Back-n white neutron source

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Back-n white neutron source at CSNS and its applications

引用

Nuclear Science and Techniques 2021年第1期32卷 95-104页

作者： Jing-Yu Tang Qi An jiang-Bo Bai Jie Bao Yu Bao Ping Cao Hao-Lei Chen Qi-Ping Chen Yong-Hao Chen Zhen Chen Zeng-Qi cui Rui-Rui fan Chang-Qing Feng Ke-Qing Gao xiao-Long Gao min-Hao Gu Chang-cai Han Zi-Jie Han guo-zhu He Yong-Cheng He yang Hong Yi-Wei Hu Han-Xiong huang Xi-Ru huang Hao-Yu jiang Wei jiang zhi-Jie jiang Han-Tao Jing ling Kang Bo li Chao li Jia-Wen li qiang li xiao li yang li Jie liu Rong liu Shu-Bin liu xing-yan liu Ze Long Guang-Yuan Luan Chang-Jun Ning Meng-Chen Niu Bin-Bin Qi Jie Ren zhi-Zhou Ren Xi-Chao Ruan zhao-Hui Song Kang Sun zhi-Jia Sun zhi-xin Tan xin-Yi Tang Bin-Bin Tian li-Jiao Wang Peng-Cheng Wang zhao-Hui Wang Zhong-Wei Wen xiao-Guang wu Xuan wu li-Kun Xie xiao-Yun yang Yi-Wei yang Han Yi li Yu Tao Yu Yong-Ji Yu guo-Hui zhang lin-Hao zhang Qi-Wei zhang xian-Peng zhang Yu-liang zhang zhi-Yong zhang Lu-Ping Zhou zhi-Hao Zhou Ke-Jun zhu 无 State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China 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 State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China The CSNS Back-n Collaboration

Back-streaming neutrons from the spallation target of the China Spallation Neutron Source(CSNS)that emit through the incoming proton channel were exploited to build a white neutron beam facility(the so-called Back-n white neutron source),which was completed in March *** Back-n neutron beam is very intense,at approximately 29107 n/cm2/s at 55 m from the target,and has a nominal proton beam with a power of 100 kW in the CSNS-I phase and a kinetic energy of 1.6 GeV and a thick tungsten target in multiple slices with modest moderation from the cooling water through the *** addition,the excellent energy spectrum spanning from 0.5 eV to 200 MeV,and a good time resolution related tothe time-of-flight measurements make it a typical white neutron source for nuclear data measurements;its overall performance is among that of the best white neutron sources in the *** with advanced spectrometers,detectors,and application utilities,the Back-n facility can serve wide applications,with a focus on neutron-induced cross-sectional *** article presents an overview of the neutron beam characteristics,the experimental setups,and the ongoing applications at Backn.

关键词： White neutron source Nuclear data measurements Experimental setups Neutron applications

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