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Genome assembly of autotetraploid Actinidia arguta highlights adaptive evolution and enables dissection of important economic traits

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Plant Communications 2024年第6期5卷 173-192页

作者： Xue-Mei Lu Xiao-Fen yu Guo-qiang li Ming-hao Qu Huan Wang Chuang liu yu-ping man Xiao-Han jiang Mu-Zi li jian Wang qi-qi chen Rui Lei cheng-cheng Zhao yun-qiu Zhou Zheng-Wang jiang Zuo-Zhou li Shang Zheng Chang Dong Bai-lin Wang yan-Xiang Sun Hui-qin Zhang jie-wei li Quan-Hui Mo Ying Zhang Xin Lou Hai-Xu Peng Ya-Ting Yi He-Xin Wang Xiu-Jun Zhang Yi-Bo Wang Dan Wang li li qiong Zhang Wen-Xia Wang Yongbo liu Lei Gao jin-Hu Wu yan-Chang Wang CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Wuhan Botanical GardenChinese Academy of SciencesWuhanHubeiChina Key Laboratory of Western China’s Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhouGansuChina College of life Sciences University of Chinese Academy of SciencesBeijingChina Wuhan Frasergen Bioinformatics Co. LtdWuhanHubeiChina Institute of Soil and Fertilizer Anhui Academy of Agricultural SciencesHefeiChina College of Agricultural Sciences Xichang UniversityXichangSichuanChina Department of Horticulture Heilongjiang Academy of Agricultural SciencesHarbinHeilongjiangChina College of life Sciences Langfang Normal UniversityLangfangHebeiChina Institute of Horticulture Zhejiang Academy of Agricultural SciencesHangzhouZhejiangChina Guangxi Institute of Botany Chinese Academy of SciencesGuilinGuangxiChina Xi’an Botanical Garden of Shaanxi Province Institute of Botany of Shaanxi ProvinceXi’anShaanxiChina Institute of Modern Agricultural Research Dalian UniversityDalianLiaoningChina Bioinformatics Center College of Plant Science and TechnologyBeijing University of AgricultureBeijingChina College of Agriculture Eastern Liaoning UniversityDandongLiaoningChina Dalian Institute of Chemical Physics Chinese Academy of SciencesDalianLiaoningChina State Environmental Protection Key Laboratory of Regional Eco-process and Function Assessment Chinese Research Academy of Environmental SciencesBeijingChina Hubei hongshan Laboratory WuhanHubeiChina The New Zealand Institute for Plant and Food Research limited AucklandNew Zealand

Actinidia arguta,the most widely distributed Actinidia species and the second cultivated species in the genus,can be distinguished from the currently cultivated Actinidia chinensis on the basis of its small and smooth fruit,rapid softening,and excellent cold *** evolution of tetraploid Actinidia species and the genetic basis of their important agronomic traits are still ***,we generated a chromosome-scale genome assembly of an autotetraploid male *** *** genome assembly was 2.77 Gb in length with a contig N50 of 9.97 Mb and was anchored onto 116 *** and clustering of 101 geographically representative accessions showed that they could be divided into two geographic groups,Southern and Northern,which first diverged 12.9 million years *** underwent two prominent expansions and one demographic bottleneck from the midPleistocene climate transition to the late *** genomics studies using paleoclimate data enabled us to discern the evolution of the species’adaptation to different historical *** genes(AaCEL1,AaPME1,and AaDOF1)related to flesh softening were identified by multi-omics analysis,and their ability to accelerate flesh softening was verified through transient expression assays.A set of genes that characteristically regulate sexual dimorphism located on the sex chromosome(Chr3)or autosomal chromosomes showed biased expression during stamen or carpel *** chromosome-level assembly of the autotetraploid *** genome and the genes related to important agronomic traits will facilitate future functional genomics research and improvement of ***.

关键词： kiwiberry dioecism adaptive evolution paleoclimate GEA rapid softening

Characterization of acute-on-chronic liver diseases: A multicenter prospective cohort study

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World Journal of Hepatology 2024年第5期16卷 809-821页

作者： yuan-Yao Zhang Sen Luo Hai li Shu-Ning Sun Xian-Bo Wang Xin Zheng yan Huang Bei-ling li yan-Hang Gao Zhi-ping qian Feng liu Xiao-Bo Lu Jun-ping liu hao-Tang Ren yu-Bao Zheng Hua-Dong yan Guo-hong Deng liang qiao yan Zhang Wen-Yi Gu Xiao-Mei Xiang Yi Zhou Yi-Xin Hou Qun Zhang yan Xiong Cong-Cong Zou Jun chen Ze-Bing Huang Xiu-Hua jiang Ting-Ting qi yuan-yuan chen Na Gao Chun-yan liu wei yuan Xue Mei jing li Tao li Rong-jiong Zheng Xin-Yi Zhou Jun Zhao Zhong-ji Meng Department of Infectious disease Institute of Biomedical ResearchRegulatory Mechanism and Targeted Therapy for Liver Cancer Shiyan Key LaboratoryHubei provincial Clinical Research Center for Precise Diagnosis and Treatment of Liver CancerTaihe HospitalHubei University of MedicineShiyan 442000Hubei ProvinceChina Department of Gastroenterology Renji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200120China Department of Infectious diseases Southwest HospitalThe Third Military Medical University(Army Medical University)Chongqing 400000China Center of Integrative Medicine Beijing Ditan HospitalCapital Medical UniversityBeijing 100020China Department of Infectious diseases Institute of Infection and ImmunologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430020Hubei ProvinceChina Department of Infectious diseases Hunan Key Laboratory of Viral HepatitisXiangya HospitalCentral South UniversityChangsha 110051Hunan ProvinceChina Hepatology Unit Department of Infectious DiseasesNanfang HospitalSouthern Medical UniversityGuangzhou 510515Guangdong ProvinceChina Department of Hepatology The First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina Department of liver Intensive Care Unit Shanghai Public Health Clinical CentreFudan UniversityShanghai 200093China Tianjin Institute of Hepatology Nankai University Second People's HospitalTianjin 300192China Infectious disease Center The First Affiliated Hospital of Xinjiang Medical UniversityUrumqi 830054Xinjiang Uygur Autonomous RegionChina Department of Infectious diseases and Hepatology The Second Hospital of Shandong UniversityJinan 250000Shandong ProvinceChina State Key Laboratory for diagnosis and Treatment of Infectious diseases Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseaseThe First Affiliated HospitalZhejiang University School of MedicineHangzhou 310000Zhejiang ProvinceChina Department of Infectious diseases The Thir

BACKGROUND Acute-on-chronic liver disease(AoCLD)accounts for the majority of patients hospitalized in the Department of Hepatology or Infectious *** To explore the characterization of AoCLD to provide theoretical guidance for the accurate diagnosis and prognosis of *** Patients with AoCLD from the Chinese Acute-on-Chronic liver Failure(ACLF)study cohort were included in this *** clinical characteristics and outcomes,and the 90-d survival rate associated with each clinical type of AoCLD were analyzed,using the Kaplan-Meier method and the log-rank *** A total of 3375 patients with AoCLD were enrolled,including 1679(49.7%)patients with liver cirrhosis acute decompensation(LC-AD),850(25.2%)patients with ACLF,577(17.1%)patients with chronic hepatitis acute exacer-bation(CHAE),and 269(8.0%)patients with liver cirrhosis active phase(LC-A).The most common cause of chronic liver disease(CLD)was HBV infection(71.4%).The most common precipitants of AoCLD was bacterial infection(22.8%).The 90-d mortality rates of each clinical subtype of AoCLD were 43.4%(232/535)for type-C ACLF,36.0%(36/100)for type-B ACLF,27.0%(58/215)for type-A ACLF,9.0%(151/1679)for LC-AD,3.0%(8/269)for LC-A,and 1.2%(7/577)for *** HBV infection is the main cause of CLD,and bacterial infection is the main precipitant of *** most common clinical type of AoCLD is *** diagnosis and timely intervention are needed to reduce the mortality of patients with LC-AD or ACLF.

关键词： Acute-on-chronic liver disease Acute-on-chronic liver failure liver cirrhosis Clinical features Prognosis

Searching for^(76)Ge neutrinoless double beta decay with the CDEX-1B experiment

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Chinese Physics C 2024年第10期48卷 11-22页

作者： Bing-Tao Zhang Jun-Zheng Wang li-Tao yang qian yue Ke-Jun Kang yuan-jing li Hai-Peng An C.Greeshma jian-ping Chang yun-Huan chen jian-ping cheng Wen-Han Dai Zhi Deng Chang-hao Fang Xin-ping Geng Hui Gong qiu-Ju Guo Xu-yuan Guo li He Sheng-Ming He jin-wei Hu Han-Xiong Huang Tu-chen Huang Hai-Tao jia Xi jiang S.Karmakar hao-Bin li jian-Min li jin li qian-yun li Ren-Ming-jie li Xue-qian li yu-Lan li Yi-Fan liang Bin liao Fong-Kay lin Shin-Ted lin jia-Xuan liu Shu-Kui liu yan-Dong liu yu liu yuan-yuan liu Zhong-Zhi liu hao ma yu-Cai mao qi-yuan Nie jin-Hua Ning Hui Pan Ning-Chun qi jie Ren Xi-Chao Ruan Ze She manoj Kumar Singh Tian-Xi Sun Chang-jian Tang wei-You Tang yang Tian Guang-Fu Wang li Wang qing Wang yu-Feng Wang yun-Xiang Wang Henry-Tsz-King Wong Shi-Yong Wu yu-cheng Wu hao-yang Xing Rui Xu Yin Xu Tao Xue yu-Lu yan Nan Yi Chun-Xu yu Hai-Jun yu jian-Feng yue Ming Zeng Zhi Zeng Feng-Shou Zhang Lei Zhang Zhen-Hua Zhang Zhen-yu Zhang Kang-Kang Zhao Ming-Gang Zhao ji-Fang Zhou Zu-Ying Zhou jing-Jun Zhou Key Laboratory of Particle and Radiation Imaging(Ministry of Education)and Department of Engineering Physics Tsinghua UniversityBeijing 100084 Department of Physics Tsinghua UniversityBeijing 100084 Institute of Physics Academia SinicaTaipei 11529 NUCTECH Company Beijing 100084 YaLong River Hydropower Development Company Chengdu 610051 College of Nuclear Science and Technology Beijing Normal UniversityBeijing 100875 College of Physics Sichuan UniversityChengdu 610065 School of Physics Peking UniversityBeijing 100871 Department of Nuclear Physics China Institute of Atomic EnergyBeijing 102413 Sino-French Institute of Nuclear and Technology Sun Yat-sen UniversityZhuhai 519082 School of Physics Nankai UniversityTianjin 300071 Department of Physics Banaras Hindu UniversityVaranasi 221005 Department of Physics Beijing Normal UniversityBeijing 100875

We operated a p-type point contact high purity germanium(PPCGe)detector(CDEX-1B,1.008 kg)in the China jinping Underground Laboratory(CJPL)for 500.3 days to search for neutrinoless double beta(0νββ)decay of^(76)Ge.A total of 504.3 kg⋅day effective exposure data was *** anti-coincidence and the multi/single-site event(MSE/SSE)discrimination methods were used to suppress the background in the energy region of interest(ROI,1989–2089 keV for this work)with a factor of 23.A background level of 0.33 counts/(keV⋅kg⋅yr)was *** lower limit on the half life of^(76)Ge 0νββdecay was constrained as T_(1/2)^(0ν)>1.0×10^(23)yr(90%C.L.),corresponding to the upper limits on the effective majorana neutrino mass:<3.2–7.5 eV.

关键词： neutrinoless double beta decay CDEX point-contact germanium detector ^(76)Ge

菌核青霉SYBR GreenⅠ实时荧光定量PCR检测方法的建立与应用

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农业生物技术学报 2024年第5期32卷 1198-1205页

作者：宋嘉仪张海霞齐是张纪利陈东豪韦建玉黎平陈泽鹏颜健华南农业大学资源环境学院广东烟草韶关市有限公司广西中烟工业有限责任公司中国烟草总公司广东省公司

菌核青霉(Penicillium sclerotiorum)是青霉属中一种具有很高生物活性的内生真菌，其产生的次级代谢产物具有一定的生物防治潜力，已在医学、农业等领域有广泛的应用。本研究以马齿苋(Portulaca oleracea)植株中分离纯化而来的菌核青霉... 详细信息

菌核青霉(Penicillium sclerotiorum)是青霉属中一种具有很高生物活性的内生真菌，其产生的次级代谢产物具有一定的生物防治潜力，已在医学、农业等领域有广泛的应用。本研究以马齿苋(Portulaca oleracea)植株中分离纯化而来的菌核青霉为材料，针对其特异性保守序列设计引物，将目的片段通过分子克隆技术连接至pBM73-T载体中构建重组质粒为阳性标准品，选用SYBR GreenⅠ染料法建立菌核青霉实时荧光定量PCR检测方法。结果显示，PCR扩增后只有菌核青霉产生条带，青霉属的波兰青霉(***)和产黄青霉(P. polonicum)均无条带产生，且未检测到其熔解曲线和扩增曲线，说明该方法具有很强的特异性。以重组质粒作为标准品构建的标准曲线，其循环阈值(Ct)与模板浓度在2.35×103～2.35×1010 copies/μL间有良好的线性关系，所得到的标准曲线为y=-3.211x+39.42，相关系数R2=0.999 3，组内和组间变异系数均低于5%。土壤样品检测结果表明，该方法可以灵敏地检测到环境样本中的菌核青霉及其数量，具有较好的应用潜力。本研究建立的方法具有良好的特异性、重复性及实用性，可用于探究菌核青霉在植株和土壤中的定殖情况，量化植物不同组织及土壤中菌核青霉数量。本研究为菌核青霉促生及抗性机制研究提供一定的数据和理论支持。

关键词：菌核青霉 SYBR Green Ⅰ 绝对定量

双胎早产儿支气管肺发育不良危险因素分析:一项多中心研究

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中国当代儿科杂志 2024年第6期26卷 611-618页

作者：樊雨薇张伊佳温和梅晏红沈蔚丁月琴龙运峰张志钢李桂芳姜泓饶红萍邱建武魏贤张亚昱曾纪斌赵常亮许伟鹏王凡员丽杨秀芳李薇林霓阳陈倩夏昌顺钟鑫琪崔其亮广州医科大学附属第三医院新生儿科/广东省产科重大疾病重点实验室/广东省妇产疾病临床医学研究中心/粤港澳母胎医学高校联合实验室广东广州510150 北京大学第三医院儿科北京100191 四川锦欣妇女儿童医院新生儿科四川成都610011 贵州医科大学附属医院新生儿科贵州贵阳550001 厦门大学附属妇女儿童医院新生儿科福建厦门361003 南方医科大学附属东莞医院新生儿科广东东莞523000 邵阳学院附属第一医院新生儿科湖南邵阳422000 广东省第二人民医院新生儿科广东广州511000 沧州市人民医院新生儿科河北沧州061000 延安大学附属医院新生儿科陕西延安716000 惠州市中心人民医院新生儿科广东惠州516001 汕头大学医学院附属粤北人民医院新生儿科广东韶关512026 武汉科技大学附属孝感医院新生儿科湖北孝感432000 内蒙古医科大学附属医院新生儿科内蒙古呼和浩特010050 汕头大学医学院第二附属医院新生儿科广东汕头515041 包钢集团第三职工医院新生儿科内蒙古包头014010 暨南大学附属第一医院新生儿科广东广州510630 兰州大学第二医院甘肃兰州730000 新乡市中心医院新生儿科河南新乡453000 中山市人民医院新生儿科广东中山528400 东莞市滨海湾中心医院新生儿科广东东莞523808 汕头大学医学院第一附属医院新生儿科广东汕头515041

目的分析胎龄25%是双胎中仅一胎患BPD的危险因素(OR=3.370,95%CI:1.500~7.568,P<0.05),胎龄大是双胎均患BPD的保护因素(P<0.05)。对双胎中仅一胎为BPD组进行组内条件logistic回归分析,提示小于胎龄儿是双胎内个体发生BPD的危险因素(OR=... 详细信息

目的分析胎龄25%是双胎中仅一胎患BPD的危险因素(OR=3.370,95%CI:1.500~7.568,P<0.05),胎龄大是双胎均患BPD的保护因素(P<0.05)。对双胎中仅一胎为BPD组进行组内条件logistic回归分析,提示小于胎龄儿是双胎内个体发生BPD的危险因素(OR=5.017,95%CI:1.040~24.190,P<0.05)。结论双胎早产儿BPD的发生不仅与胎龄相关,也与双胎出生体重差异、小于胎龄儿密切相关。

关键词：支气管肺发育不良危险因素多中心研究双胎儿早产儿

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CEPC Technical Design Report

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Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai yu Bai yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert maarten Boonekamp marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao jianshe Cao Antoine Chance Xuejun Chang yue Chang Zhe Chang Xinyuan Chang wei Chao Auttakit Chatrabhuti Yimin Che yuzhi Che Bin chen Danping chen Fuqing chen Fusan chen Gang chen Guoming chen Hua-Xing chen Huirun chen jinhui chen ji-yuan chen Kai chen mali chen Mingjun chen Mingshui chen Ning chen Shanhong chen Shanzhen chen Shao-Long chen Shaomin chen Shiqiang chen Tianlu chen wei chen Xiang chen Xiaoyu chen Xin chen Xun chen Xurong chen Ye chen Ying chen yukai chen Zelin chen Zilin chen Gang chen Boping chen Chunhui chen Hok Chuen cheng Huajie cheng Shan cheng Tongguang cheng yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi ling-yun Dai Xinchen Dai Xuwen Dai Antonio De maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio di Micco Ran ding Siqin dingl Yadong ding Haiyi Dong jianin AGH University of Science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui University HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu University Institute of ScienceVaranasi Bandirma Onyedi Eylul University Bandirma Beihang University Beijing Beijing Computational Science Research Center Beijing Beijing Conveyi LTD Beijing Beijing Glass Research Institute Co. LtdBeijing Beijing Institute of Technology Beijing Beijing Normal University Beijing Brown University ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad University Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo University Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central China Normal University WuhanHubei Central South University ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa chengdu KaitengSifang digital Radio&TV Equipment Co. LtdChengduSichuan China academy of engineering physics MianyangSichuan China building materials academy Beijing China Center of Advanced Science and Technology Beijing China Institute of Atomic Energy Beijing China jiliang University HangzhouZhejiang China Nuclear Instrument CO. LTDBeijing China University of Geosciences Beijing China University of Geosciences WuhanHubei China University of Mining and Technology XuzhouJiangsu China West Normal University NanchongSichuan Chongqing University Department of PhysicsChongqing Chulalongkorn University Bangkok City University of hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell University IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu University DalianLiaoning Dalian University of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP jiNR) Dubna East China University Of Science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise

基于白光中子源的^(197)Au中子辐射俘获截面测量及共振参数分析

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物理学报 2024年第7期73卷 104-113页

作者：罗淏天张奇玮栾广源王晓宇邹翀任杰阮锡超贺国珠鲍杰孙琪黄翰雄王朝辉吴鸿毅顾旻皓余滔解立坤陈永浩安琪白怀勇鲍煜曹平陈昊磊陈琪萍陈裕凯陈朕崔增琪樊瑞睿封常青高可庆韩长材韩子杰何泳成洪杨黄蔚玲黄锡汝季筱璐吉旭阳蒋伟江浩雨姜智杰敬罕涛康玲康明涛李波李超李嘉雯李论李强李晓李样刘荣刘树彬刘星言穆奇丽宁常军齐斌斌任智洲宋英鹏宋朝晖孙虹孙康孙晓阳孙志嘉谭志新唐洪庆唐靖宇唐新懿田斌斌王丽娇王鹏程王琦王涛峰文杰温中伟吴青彪吴晓光吴煊羊奕伟易晗于莉于永积张国辉张林浩张显鹏张玉亮张志永赵豫斌周路平周祖英朱丹阳朱科军朱鹏朱兴华中国原子能科学研究院核数据重点实验室北京102413 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 核探测与核电子学国家重点实验室北京100049 中国科学技术大学近代物理系核探测与核电子学国家重点实验室合肥230026 北京大学物理学院核物理与核技术国家重点实验室北京100871 中国工程物理研究院核物理与化学研究所绵阳621900 西北核技术研究院西安710024 中国科学院大学北京100049 中国科学技术大学工程与应用物理系合肥230026 北京航空航天大学物理学院北京100083 华能山东石岛湾核电有限公司荣成264312

中子辐射俘获反应在反应堆运行、核装置设计及核天体物理研究中起重要的作用.4πBaF_(2)探测装置有着高时间分辨能力、低中子灵敏度、高探测效率等优点,适合开展中子辐射俘获反应截面数据的测量.中国原子能科学研究院核数据重点实验室... 详细信息

中子辐射俘获反应在反应堆运行、核装置设计及核天体物理研究中起重要的作用.4πBaF_(2)探测装置有着高时间分辨能力、低中子灵敏度、高探测效率等优点,适合开展中子辐射俘获反应截面数据的测量.中国原子能科学研究院核数据重点实验室建立了伽马全吸收装置(Gamma total absorption facility,GTAF),该装置用28块六棱BaF_(2)晶体和12块五棱BaF_(2)晶体构成了外径25 cm,内径10 cm的球壳,覆盖了95.2%的立体角.利用GTAF在中国散裂中子源Back-n束线上,测量了197Au(n,γ)的反应截面数据.测量数据通过能量筛选、PSD方法、晶体多重性筛选进行了初步本底扣除,随后结合对^(nat)C及空样品的测量数据对本底进行了分析及扣除,获得了197Au俘获反应的产额,利用SAMMY程序拟合得到了^(197)Au在1—100 e V的共振能量、中子共振宽度和伽马共振宽度参数.实验测量结果与ENDF/B-VIII.0数据库符合良好,其共振参数存在一定差异,分析原因可能与GTAF能量分辨率、Back-n的中子能谱测量精度、以及实验本底扣除方法相关,这也是下一步工作的重点.

关键词：中子辐射俘获截面共振参数白光中子源伽马全吸收装置

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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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STCF conceptual design report (Volume 1): Physics & detector

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Frontiers of physics 2024年第1期19卷 1-154页

作者： M.Achasov X.C.Ai L.P.An R.Aliberti Q.An X.Z.Bai Y.Bai O.Bakina A.Barnyakov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomyagkov A.Bondar I.Boyko Z.H.Bu F.M.Cai H.Cai J.J.Cao Q.H.Cao X.Cao Z.Cao Q.Chang K.T.Chao D.Y.chen H.chen H.X.chen J.F.chen K.chen L.L.chen P.chen S.L.chen S.M.chen S.chen S.P.chen W.chen X.chen X.F.chen X.R.chen Y.chen Y.Q.chen H.Y.cheng J.cheng S.cheng T.G.cheng J.P.Dai L.Y.Dai X.C.Dai D.Dedovich A.Denig I.Denisenko J.M.dias D.Z.ding L.Y.Dong W.H.Dong V.Druzhinin D.S.Du Y.J.Du Z.G.Du L.M.Duan D.Epifanov Y.L.Fan S.S.Fang Z.J.Fang G.Fedotovich C.Q.Feng X.Feng Y.T.Feng J.L.Fu J.Gao Y.N.Gao P.S.Ge C.Q.Geng L.S.Geng A.Gilman L.Gong T.Gong B.Gou W.Gradl J.L.Gu A.Guevara L.C.Gui A.Q.Guo F.K.Guo J.C.Guo J.Guo Y.P.Guo Z.H.Guo A.Guskov K.L.Han L.Han M.Han X.Q.hao J.B.He S.Q.He X.G.He Y.L.He Z.B.He Z.X.Heng B.L.Hou T.J.Hou Y.R.Hou C.Y.Hu H.M.Hu K.Hu R.J.Hu W.H.Hu X.H.Hu Y.C.Hu J.Hua G.S.Huang J.S.Huang M.Huang Q.Y.Huang W.Q.Huang X.T.Huang X.J.Huang Y.B.Huang Y.S.Huang N.Hüsken V.Ivanov Q.P.ji J.J.jia S.jia Z.K.jia H.B.jiang J.jiang S.Z.jiang J.B.jiao Z.jiao H.J.jing X.L.Kang X.S.Kang B.C.Ke M.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzmin Y.Lei E.Levichev C.H.li C.li D.Y.li F.li G.li G.li H.B.li H.li H.N.li H.J.li H.L.li J.M.li J.li L.li L.li L.Y.li N.li P.R.li R.H.li S.li T.li W.J.li X.li X.H.li X.Q.li X.H.li Y.li Y.Y.li Z.J.li H.liang J.H.liang Y.T.liang G.R.liao L.Z.liao Y.liao C.X.lin D.X.lin X.S.lin B.J.liu C.W.liu D.liu F.liu G.M.liu H.B.liu J.liu J.J.liu J.B.liu K.liu K.Y.liu K.liu L.liu Q.liu S.B.liu T.liu X.liu Y.W.liu Y.liu Y.L.liu Z.Q.liu Z.Y.liu Z.W.liu I.Logashenko Y.Long C.G.Lu J.X.Lu N.Lu Q.F.Lü Y.Lu Y.Lu Z.Lu P.Lukin F.J.Luo T.Luo X.F.Luo Y.H.Luo H.J.Lyu X.R.Lyu J.P.ma P.ma Y.ma Y.M.ma F.maas S.malde D.matvienko Z.X.Meng R.Mitchell A.Nefediev Y.Nefedov S.L.Olsen Q.Ouyang P.Pakhlov G.Pakhlova X.Pan Y.Pan E.Passemar Y.P.Pei H.P.Peng L.Peng X.Y.Peng X.J.Peng K.Peters S.Pivovarov E.Pyata B.B.qi Y.Q.qi W.B.qian Y.qian C.F.qiao J.J.qin J.J.qin L.Q.qin X.S.qin T.L.qiu J.Rademacker C.F.Redmer H.Y.Sang Anhui University Hefei 230039China Beihang University Beijing 100191China Budker Institute of Nuclear Physics Novosibirsk 630090Russia CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish Laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China Normal University Wuhan 430079China Central South University Changsha 410083China China University of Geosciences Wuhan 430074China China University of Mining and Technology Xuzhou 221116China École Polytechnique Fédérale de Lausanne(EPFL) LausanneSwitzerland Fudan University Shanghai 200433China Goethe University Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal University Guilin 541004China Guangxi Uninversity Nanning 530004China Hangzhou Institute for Advanced Study UCASHangzhou 310024China Hebei Normal University Shijiazhuang 050024China Hebei University Baoding 071002China Hefei University of Technology Hefei 230601China Helmholtz Institute mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China High Energy Physics Center Chung-Ang UniversitySeoul 06974Korea Higher School of Economy 11 Pokrovsky Bulvar Moscow 109028Russia Huangshan University Huangshan 245000China Hubei University of Automotive Technology Shiyan 442002China Hunan Normal University Changsha 410081China Hunan University of Science and Technology Xiangtan 411201China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mongolia University Hohhot 010021China Institute of Advanced Science Facilities Shenzhen 518107China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China jilin University Changch

The superτ-charm facility(STCF)is an electron–positron collider proposed by the Chinese particle physics *** is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of 0.5×10^(35) cm^(–2)·s^(–1) or *** STCF will produce a data sample about a factor of 100 larger than that of the presentτ-charm factory—the BEPCII,providing a unique platform for exploring the asymmetry of matter-antimatter(charge-parity violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for exotic hadrons and physics beyond the Standard *** STCF project in China is under development with an extensive R&D *** document presents the physics opportunities at the STCF,describes conceptual designs of the STCF detector system,and discusses future plans for detector R&D and physics case studies.

关键词： electron–positron collider tau-charm region high luminosity STCF detector conceptual design