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Development and characterization of new allohexaploid resistant to web blotch in peanut

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Journal of Integrative Agriculture 2021年第1期20卷 55-64页

作者： WANG Si-yu li li-na FU liu-yang liu Hua QIN li CUI Cai-hong miao li-juan ZHANG zhong-xin GAO wei DONG wen-zhao HUANG Bing-yan ZHENG Zheng TANG Feng-shou ZHANG Xin-you DU Pei School of life Sciences Zhengzhou UniversityZhengzhou 450001P.R.China Industrial Crops Research Institute Henan Academy of Agricultural Sciences/Key Laboratory of Oil Crops in Huang-Huai-HaiPlainsMinistry of Agriculture and Rural Affairs/Henan Provincial Key Laboratory for Oil Crops ImprovementZhengzhou 450002P.R.China

Peanut diseases seriously threaten peanut production, creating disease-resistant materials via interspecific hybridization is an effective way to deal with this problem. In this study, the embryo of an interspecific F1 hybrid was obtained by crossing the Silihong(Slh) cultivar with Arachis duranensis(ZW55), a diploid wild species. Seedlings were generated by embryo rescue and tissue culture. A true interspecific hybrid was then confirmed by cytological methods and molecular markers. After treating seedlings with colchicine during in vitro multiplication, the established interspecific F1 hybrid produced seeds which were named as Am1210. With oligonucleotide fluorescence in situ hybridization(Oligo FISH), molecular marker evaluations, morphological and web blotch resistance characterization, we found that: 1) Am1210 was an allohexaploid between Slh and ZW55;2) the traits of spreading lateral branches, single-seeded or double-seeded pods and red seed coats were observed to be dominant compared to the erect type, multiple-seeded pods and brown seed coats;3) the web blotch resistance of Am1210 was significantly improved than that of Slh, indicating the contribution of the web blotch resistance from the wild parent A. duranensis. In addition, 69 dominant and co-dominant molecular markers were developed which could be both used to verify the hybrid in this study and to identify translocation or introgression lines with A. duranensis chromosome fragments in future studies as well.

关键词： peanut interspecific hybridization allohexaploid Oligo FISH molecular marker web blotch

A von-Neumann-like photonic processor and its application in studying quantum signature of chaos

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light(Science & Applications) 2024年第4期13卷 672-681页

作者： Shang yu wei liu Si-Jing Tao Zhi-Peng li Yi-Tao Wang Zhi-Peng zhong Raj BPatel yu Meng yuan-Ze yang zhao-An Wang Nai-Jie Guo Xiao-Dong Zeng Zhe Chen liang Xu Ning Zhang Xiao liu Mu yang wen-Hao Zhang Zong-Quan Zhou Jin-Shi Xu Jian-Shun Tang Yong-Jian Han Chuan-Feng li guang-Can Guo CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China. CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China. Hefei National Laboratory University of Science and Technology of ChinaHefei 230088China. Research Center for Quantum Sensing Zhejiang LabHangzhou 310000China. Quantum Optics and Laser Science Blackett LaboratoryImperial College LondonPrince Consort RdLondon SW72AZUK. Clarendon Laboratory Department of PhysicsOxford UniversityParks Road OX13PUOxfordUK

Photonic quantum computation plays an important role and offers unique *** decades after the milestone work of Knill-Laflamme-Milburn,various architectures of photonic processors have been proposed,and quantum advantage over classical computers has also been *** is now the opportune time to apply this technology to real-world ***,at current technology level,this aim is restricted by either programmability in bulk optics or loss in integrated optics for the existing architectures of processors,for which the resource cost is also a *** we present a von-Neumann-like architecture based on temporal-mode encoding and looped structure on table,which is capable of multimode-universal programmability,resource-efficiency,phasestability and *** order to illustrate these merits,we execute two different programs with varying resource requirements on the same processor,to investigate quantum signature of chaos from two aspects:the signature behaviors exhibited in phase space(13 modes),and the Fermi golden rule which has not been experimentally studied in quantitative way before(26 modes).The maximal program contains an optical interferometer network with 1694 freely-adjustable *** current state-of-the-art,our architecture stands as the most promising candidate for real-world applications.

关键词： quantum signature chaos

Towards the full realization of the RIBLL2 beam line at the HIRFL-CSR complex

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Science Bulletin 2018年第2期63卷 78-80页

作者： Bao-Hua Sun Jian-wei zhao Xue-Heng Zhang li-Na Sheng Zhi-yu Sun Isao Tanihata Satoru Terashima Yong Zheng li-Hua Zhu li-Min Duan liu-Chun He Rong-Jiang Hu guang-Shuai li wen-Jian lin wei-Ping lin Chuan-Ye liu zhong liu Chen-Gui Lu Xin-wen Ma li-Jun Mao Yi Tian Feng Wang Meng Wang Shi-Tao Wang Jia-wen Xia Xiao-Dong Xu Hu-Shan Xu Zhi-Guo Xu Jian-Cheng yang Da-yu Yin You-Jin yuan wen-Long Zhan yu-Hu Zhang Xiao-Hong Zhou School of Physics and Nuclear Energy Engineering Beihang University Beijing 100191 China International Research Center for Nuclei and Particles in the Cosmos Beijing 100191 China Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China

More than 99%of the mass in the visible universe—the material that makes up ourselves,our planet,stars—is in the atomic *** the matter has existed for billions of years,only over the past few decades have we had the tools and the knowledge necessary to get a basic understanding of the structure and dynamic of *** physicists around the world have made tremendous strides by initiating a broad range of key

关键词： HIRFL-CSR 横梁建筑群排队原子核物理学家试验性世界

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

Metatranscriptome of human lung microbial communities in a cohort of mechanically ventilated COVID-19 Omicron patients

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Signal Transduction and Targeted Therapy 2023年第12期8卷 5919-5930页

作者： lin Wang Jia-Bao Cao Bin-Bin Xia yue-Juan li Xuan Zhang Guo-Xin Mo Rui-Juan Wang Si-Qi Guo yu-Qing Zhang Kun Xiao guang-Fa Zhu Peng-Fei liu li-Cheng Song Xi-Hui Ma Ping-Chao Xiang Jiang Wang yu-Hong liu Fei Xie Xu-Dong Zhang Xiang-Xin li Wan-Lu Sun Yan Cao Kai-Fei Wang wen-Hui Zhang wei-Chao zhao Peng Yan Ji-Chao Chen yu-wei yang zhong-Kuo yu Jing-Si Tang li Xiao Jie-Min Zhou li-Xin Xie Jun Wang College of Pulmonary&Critical Care Medicine 8th Medical Center of Chinese PLA General HospitalBeijing 100091China CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Faculty of Biological Science and Technology Baotou Teacher’s CollegeBaotou 014030China Department of Respiratory Medicine PLA Strategic Support Force Medical CenterBeijing 100101China Department of Respiratory and Critical Care Medicine Beijing Anzhen HospitalCapital Medical UniversityBeijing Institute of HeartLung and Blood Vessel DiseasesBeijing 100029China Respiratory Research Institute Department of Pulmonary&Critical Care MedicineBeijing Key Laboratory of OTIRthe 8th Medical Center of Chinese PLA General HospitalBeijing 100091China Shougang hospital of Peking University Beijing 100144China Department of Respiratory Medicine Beijing Changping HospitalBeijing 102200China Department of Respiratory and Critical Care Medicine Beijing Institute of Respiratory Medicine and Beijing Chao-Yang HospitalCapital Medical UniversityBeijing 100020China Pulmonary research institute Senior Department of Respiratory and Critical Care Medicinethe 8th medical center of Chinese PLA general hospitalBeijing 100091China College of Pulmonary&Critical Care Medicine Chinese PLA General HospitalBeijing 100853China China Aerospace Science&Industry Corporation 731 hospital Beijing 100074China Department of Respiratory and Critical Care Medicine Aerospace Center HospitalBeijing 100049China Vision Medicals Center for Infectious Diseases Guangzhou 510700China

The Omicron variant of the severe acute respiratory syndrome coronavirus 2(SARS‑CoV‑2)infected a substantial proportion of Chinese population,and understanding the factors underlying the severity of the disease and fatality is valuable for future prevention and clinical *** recruited 64 patients with invasive ventilation for COVID-19 and performed metatranscriptomic sequencing to profile host transcriptomic profiles,plus viral,bacterial,and fungal content,as well as virulence factors and examined their relationships to 28-day mortality were *** addition,the bronchoalveolar lavage fluid(BALF)samples from invasive ventilated hospital/community-acquired pneumonia patients(HAP/CAP)sampled in 2019 were included for *** analysis revealed that all Omicron strains belong to BA.5 and BF.7 sub-lineages,with no difference in 28-day mortality between *** to HAP/CAP cohort,invasive ventilated COVID-19 patients have distinct host transcriptomic and microbial signatures in the lower respiratory tract;and in the COVID-19 non-survivors,we found significantly lower gene expressions in pathways related viral processes and positive regulation of protein localization to plasma membrane,higher abundance of opportunistic pathogens including bacterial Alloprevotella,Caulobacter,Escherichia-Shigella,Ralstonia and fungal Aspergillus sydowii and Penicillium *** analysis further revealed significant associations between host immune responses and microbial compositions,besides synergy within viral,bacterial,and fungal *** study presents the relationships of lower respiratory tract microbiome and transcriptome in invasive ventilated COVID-19 patients,providing the basis for future clinical treatment and reduction of fatality.

关键词： patients mortality prevention

Back-n white neutron source at CSNS and its applications

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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

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

In-beam gamma rays of CSNS Back-n characterized by black resonance filter

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Nuclear Science and Techniques 2024年第10期35卷 149-160页

作者： Jin-Cheng Wang Jie Ren wei Jiang Xi-Chao Ruan Ying-Yi liu Hao-Lan yang Kuo-Zhi Xu Xin-Yi Pan Qi Sun Jie Bao Han-Xiong Huang Hao-Fan Bai Jiang-Bo Bai Ping Cao Qi-Ping Chen Yong-Hao Chen wen-Hao Duan An-Chuan Fan Rui-Rui Fan Chang-Qing Feng Min-Hao Gu Chang-Cai Han Zi-Jie Han Guo-Zhu He Yong-Cheng He yang Hong Yi-wei Hu Zhi-Jie Jiang ling Kang Chang-lin Lan Bo li Feng li Qiang li Xiao li yang li Jie liu Rong liu Shu-Bin liu Yi-Na liu guang-yuan Luan Chang-Jun Ning Yi-Jia Qiu wen-Kai Ren Zhi-Zhou Ren zhao-Hui Song Kang Sun Zhi-Xin Tan Jing-yu Tang Sheng-Da Tang li-Jiao Wang Peng-Cheng Wang zhao-Hui Wang zhong-wei wen Xiao-guang Wu Xuan Wu Ze-Peng Wu Cong Xia li-Kun Xie Han Yi Tao yu Yong-Ji yu Guo-Hui Zhang Hang-Chang Zhang Qi-wei Zhang Xian-Peng Zhang yu-liang Zhang Zhi-Yong Zhang Mao-yuan zhao Zhi-Hao Zhou Ke-Jun Zhu Chong Zou 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 Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Institute of Modern Physics Fudan UniversityShanghai 200433China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China School of Nuclear Science and Technology 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 USTC Archaeometry Lab University of Science and Technology of ChinaHefei 230026China 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 School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China Institute of Advanced Technology University of Science and Technology of ChinaHefei 230027China

The back-streaming white-neutron beamline(Back-n)of the China Spallation Neutron Source is an essential neutronresearch platform built for the study of nuclear data,neutron physics,and neutron *** types of cross-sectional neutron-reaction measurements have been performed at Back-n since early *** measurements have shown that a significant number of gamma rays can be transmitted to the experimental stations of Back-n along with the neutron *** gamma rays,commonly referred to as in-beam gamma rays,can induce a non-negligible experimental background in neutron-reaction *** the characteristics of in-beam gamma rays is important for understanding the experimental ***,measuring in-beam gamma rays is challenging because most gamma-ray detectors are sensitive to neutrons;thus,discriminating between neutron-induced signals and those from in-beam gamma rays is *** this study,we propose the use of the black resonance filter method and a CeBr_(3) scintillation detector to measure the characteristics of the in-beam gamma rays of *** types of black resonance filters,^(181)Ta,^(59)Co,^(nat)Ag,and^(nat)Cd,were used in this *** time-of-flight(TOF)technique was used to select the detector signals remaining in the absorption region of the TOF spectra,which were mainly induced by in-beam gamma *** energy distribution and flux of the in-beam gamma rays of Back-n were determined by analyzing the deposited energy spectra of the CeBr_(3) scintillation detector and using Monte Carlo *** on the results of this study,the background contributions from in-beam gamma rays in neutron-reaction measurements at Back-n can be reasonably evaluated,which is beneficial for enhancing both the experimental methodology and data analysis.

关键词： In-beam gamma rays Back-n CeBr_(3)scintillator Black filter resonance technique

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