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Stepped-up development of accelerator mass spectrometry method for the detection of ^(60)Fe with the HI-13 tandem accelerator

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Nuclear Science and Techniques 2024年第4期35卷 136-143页

作者： Yang Zhang Sheng-quan Yan ming He Qing-Zhang Zhao wen-Hui Zhang Chao-Xin Kan jian-ming zhou Kang-Ning li Xiao-Fei wang jian-Cheng liu Zhao-Hua Peng Zhuo liang Ai-ling li jian Zheng Qi-wen Fan Yun-ju li You-Bao wang Zhi-Hong li Yang-Ping Shen Ding Nan wei Nan Yu-qiang Zhang Jia-Ying-Hao li jun-wen Tian jiang-lin Hou Chang-Xin Guo Zhi-Cheng Zhang ming-Hao Zhu Yu-wen Chen Yu-Chen jiang Tao Tian Jin-Long Ma Yi-Hui liu Jing-Yu Dong Run-Long liu Mei-Yue-Nan Ma Yong-Shou Chen wei-Ping liu Bing Guo China Institute of Atomic Energy P.O.Box 275(10)Beijing 102413China College of Science Southern University of Science and TechnologyShenzhen 518055China School of Physics Xi’an Jiaotong UniversityXi’an 710049China

The Moon provides a unique environment for investigating nearby astrophysical events such as *** samples retain valuable information from these events,via detectable long-lived“fingerprint”radionuclides such as^(60)*** this work,we stepped up the development of an accelerator mass spectrometry(AMS)method for detecting^(60)Fe using the HI-13tandem accelerator at the China Institute of Atomic Energy(CIAE).Since interferences could not be sufficiently removed solely with the existing magnetic systems of the tandem accelerator and the following Q3D magnetic spectrograph,a Wien filter with a maximum voltage of±60 kV and a maximum magnetic field of 0.3 T was installed after the accelerator magnetic systems to lower the detection background for the low abundance nuclide^(60)Fe.A 1μm thick Si_(3)N_(4) foil was installed in front of the Q3D as an energy *** particle detection,a multi-anode gas ionization chamber was mounted at the center of the focal plane of the ***,an^(60)Fe sample with an abundance of 1.125×10^(-10)was used to test the new AMS *** results indicate that^(60)Fe can be clearly distinguished from the isobar^(60)*** sensitivity was assessed to be better than 4.3×10^(-14)based on blank sample measurements lasting 5.8 h,and the sensitivity could,in principle,be expected to be approximately 2.5×10^(-15)when the data were accumulated for 100 h,which is feasible for future lunar sample measurements because the main contaminants were sufficiently separated.

关键词： Accelerator mass spectrometry Wien filter Isobar separation Supernovae Chang'e-5 lunar samples

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

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

Low dose effects on cultured mammalian cells...

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Nuclear Science and Techniques 2000年第4期11卷 276-279页

作者： wang ju-fang, li wen-jian, zhou guang-ming, HE Jing, li qiang, DANG Bing-Rong, li Xing-lin, XIE Hong-Mei, wei zeng-quan (Institute of Modern Physics, the Chinese Academy of Sciences, Lanzhou 730000) 中科院近代物理所甘肃兰州 730000

The low dose effects induced by carbon ions on Chinese hamster V79 cells and murine melanoma B16 cells were investigated in this paper. Both cell lines were divided into four groups for irradiation: (1) control, (2) 0.02 Gy or 0.05 Gy(D1), (3) 1 Gy(D2), (4) D1+D2. The survivors and micronuclei were studied as biological endpoints. The results of group (1) and group (2) showed that there were no obvious differences on micronucleus frequency but there were significant increases when irradiation dose was 0.02Gy on colony formation efficiency. Although low dose ion irradiation could not contribute to DNA damages, it could enhance the colony formation efficiency. In the study of group (3) and (4), when the ion dose was 0.02 Gy, there were evident increases on surviving fraction and decreases on micronucleus frequency, but there were no statistical changes on these endpoints when the ion dose was 0.05Gy. This meant that high LET radiation could induce the adaptive response of cultured cells, furthermore, in the range of inducing ion dose , low dose irradiation was more profitable than high dose one.

关键词：哺乳动物细胞 DNA 离子辐射低剂量效应辐射效应碳离子

高能重离子碰撞中心快度区鉴别粒子的平均横动量

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物理学报 2024年第18期73卷 98-111页

作者：谢浈李景行郑华张文超朱励霖刘星泉谭志光周代梅 Bonasera Aldo 陕西师范大学物理学与信息技术学院西安710119 华中师范大学夸克与轻子物理教育部重点实验室武汉430079 四川大学物理学院成都610064 四川大学原子核科学技术研究所成都610064 长沙学院电子信息与电气工程学院长沙410003 华中师范大学粒子物理研究所武汉430079 德州农工大学回旋加速器实验室美国得克萨斯州大学城TX 77843 意大利南方国家实验室意大利卡塔尼亚95123

末态粒子的平均横动量T>是高能重离子碰撞实验中的一个重要观测量.它反映了软质强子的特性和热核物质的性质,对其研究有助于获取碰撞系统的演化信息与规律.基于相对论重离子对撞机(RHIC)上的STAR、PHENIX实验组和大型强子对撞机(LHC)的A... 详细信息

末态粒子的平均横动量T>是高能重离子碰撞实验中的一个重要观测量.它反映了软质强子的特性和热核物质的性质,对其研究有助于获取碰撞系统的演化信息与规律.基于相对论重离子对撞机(RHIC)上的STAR、PHENIX实验组和大型强子对撞机(LHC)的AliCE实验组提供的金核-金核(Au+Au)和铅核-铅核(Pb+Pb)碰撞中心快度区实验数据,唯象公式能很好地描述不同碰撞能量下,鉴别粒子平均横动量T>随碰撞中心度、每核子对的平均碰撞次数、每核子对平均产生的带电粒子多重数赝快度密度及每次碰撞平均产生的带电粒子多重数赝快度密度的依赖关系.结果表明,鉴别粒子平均横动量T>与碰撞中心度呈线性关系,而与每核子对的平均碰撞次数2N_(coll)/N_(part)、每核子对平均产生的带电粒子多重数赝快度密度2/N_(part)dN_(ch)/dη及每次碰撞平均产生的带电粒子多重数赝快度密度1/N_(coll)dN_(ch)/dη呈幂律关系.同时,发现鉴别粒子平均横动量T>与碰撞中心度以及每核子对的平均碰撞次数唯象公式中的拟合参数与碰撞能量呈现非常好的幂律函数关系.因此,碰撞中心度及每核子对的平均碰撞次数是研究鉴别粒子平均横动量的优选物理量.本文结果可用于对实验上在其他碰撞能量下鉴别粒子平均横动量的预测.

关键词：重离子碰撞平均横动量鉴别粒子中心快度区

Biological effects of hepatoma cells irradiated by 25MeV/u^(40)Ar^(14+)

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World Journal of Gastroenterology 1998年第3期4卷 91-92页

作者： zhou guangming1, CHEN weiqiang1, GAO QingXiang2, li wenjian1, li qiang1 and wei zengquan1

Ｂｉｏｌｏｇｉｃａｌｅｆｅｃｔｓｏｆｈｅｐａｔｏｍａｃｅｌｓｉｒａｄｉａｔｅｄｂｙ２５ＭｅＶ／ｕ４０Ａｒ１４＋ＺＨＯＵＧｕａｎｇＭｉｎｇ１，ＣＨＥＮＷｅｉＱｉａｎｇ１，ＧＡＯＱｉｎｇＸｉａｎｇ２，ＬＩＷｅｎ... 详细信息

Ｂｉｏｌｏｇｉｃａｌｅｆｅｃｔｓｏｆｈｅｐａｔｏｍａｃｅｌｓｉｒａｄｉａｔｅｄｂｙ２５ＭｅＶ／ｕ４０Ａｒ１４＋ＺＨＯＵＧｕａｎｇＭｉｎｇ１，ＣＨＥＮＷｅｉＱｉａｎｇ１，ＧＡＯＱｉｎｇＸｉａｎｇ２，ＬＩＷｅｎＪｉａｎ１，ＬＩＱｉａｎｇ１ａｎｄ...

关键词： carcinoma,hepatocellular/radiotherapy liver neoplasms/radiotherapy argon/therapeatic use

Mechanical properties and thermal stability of 7055 Al alloy by minor Sc addition

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Rare Metals 2020年第6期39卷 725-732页

作者： Chong-Yu liu guang-Biao Teng Zong-Yi Ma li-li wei wen-Biao zhou Hong-Feng Huang Hai-quan Qi Key Laboratory of New Processing Technology for Nonferrous Metal and Materials Ministry of EducationGuilin University of TechnologyGuilin 541004China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Alnan Aluminium Co. LtdNanning 530000China

This study investigated the effect of 0.25 wt%Sc addition on the microstructure and mechanical properties of AA 7055 *** addition of Sc obviously refined the grains of AA 7055 alloy during casting,homogenizing,rolling,solution,and aging treatments due to the formation of primary and precipitate Al3(Sc,Zr)*** recrystallization and precipitation of AA 7055 alloy were inhibited during heat treatments by Sc *** Sccontaining AA 7055 alloy exhibited higher thermal stability than AA 7055 alloy during homogenizing treatment,because of the grain boundary pinning effect of nano-sized Al3(Sc,Zr)*** its structure characteristics such as fine grains,fineη′phase,and lessηphase,AA 7055 alloy with added Sc showed good mechanical properties after aging at 120℃for 24 h,with an ultimate tensile strength(UTS)of 679 MPa and elongation(EL)of 14%.This work provides an effective strategy to fabricate AlZn-Mg(-Cu)series(7 xxx)alloys with excellent mechanical properties.

关键词： Al alloy Sc addition Microstructure Mechanical properties

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

Micronuclei and cell survival in human liver cancer cells irradiated by 25MeV/u^(40)Ar^(14+)

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World Journal of Gastroenterology 1999年第4期5卷 93-96页

作者： li wen jian 1, GAO Qing Xiang 2, zhou guang ming 1 and wei zeng quan 1

ＩＮＴＲＯＤＵＣＴＩＯＮＨｅａｖｙｉｏｎｓｗｉｔｈｈｉｇｈｌｉｎｅａｒｅｎｅｒｇｙｔｒａｎｓｆｅｒ（ＬＥＴ）ｈａｖｅｔｈｅｆｏｌｏｗｉｎｇａｄｖａｎｔａｇｅｓａｓｃｏｍｐａｒｅｄｗｉｔｈｔｈｅｃｏｎｖｅｎｔｉｏｎａｌ... 详细信息

ＩＮＴＲＯＤＵＣＴＩＯＮＨｅａｖｙｉｏｎｓｗｉｔｈｈｉｇｈｌｉｎｅａｒｅｎｅｒｇｙｔｒａｎｓｆｅｒ（ＬＥＴ）ｈａｖｅｔｈｅｆｏｌｏｗｉｎｇａｄｖａｎｔａｇｅｓａｓｃｏｍｐａｒｅｄｗｉｔｈｔｈｅｃｏｎｖｅｎｔｉｏｎａｌＸｒａｙｓａｎｄγｒａｙｓｔｈ...

关键词： liver neoplasms heavy ions micronucleus cell survival tumor cell, cultured