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2005国际暨第八届全国头颈肿瘤大会

作者： liu wei-wei wu qiu-liang wu guo-hao chen zhi-hua zeng zong-yuan

＜正＞ Objectives:Postirradiation osteosarcoma（PIOS）arising after radiation ofnasopharyngeal cancer（NPC）is rare and seldom *** aim of this articleis to report its clinicopathological features,outcome after treatment andprognosis. Study Design:Retrospective cohort ***:Fifteen patients with NPC were determined to have PIOS after reviewing 426patients with osteogenic *** clinical records,image and pathologicalslides,and follow-up data after treatment were collected to perform ***:The incidence rate of PIOS in NPC was about 0. 037%（15/40719）,which occupiedabout 3.5%（15/426）among all kinds of osteogenic *** onset time intervalof PIOS ranged from 4 to 27 years with a mean of 13.3 years after irradiation *** location where PIOS arose included 5 from maxilla,7 from mandible,and3 from a mixture of nasal cavity and paranasal *** tissue mass,bonedestruction and tumor new bone formation were the main characteristics in X-ray filmsand CT *** subtypes included 53.3%（8/15）of fibroblasticosteosarcoma,33.3%（5/15）of chondroblastic osteosarcoma and 13.3%（2/15）of mixedtype *** all patients with PIOS,9 patients received surgery alone,2 patients received surgery and postoperative chemotherapy using HD-MTX regimen,1 patient received surgery plus postoperative radiotherapy（dose 40 Gy）,and 3patients received palliative chemotherapy *** 12 patients undertaken ablativesurgery in curative aim,1 patient had residual tumor after surgery and 6 patientshad tumor recurrence from 5 to 19 months with a mean of 9 months after *** duration for all patients ranged from 7 to 41 months with a mean of 18 ***-Meier estimates of one-year and two-year survival rates in 15 patients withPIOS were 60% and 24% *** and tumor bone formation are thesignificant factors that can influence the ***:PIOS in NPC is a high malignant disease with poorer prognosis than

关键词： Radiation-induced neoplasms Osteosarcoma Nasopharyngeal neoplasms.

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Self-powered solar-blind photodiodes based on EFG-grown(100)-dominant β-Ga_(2)O_(3) substrate

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Chinese Physics B 2021年第1期30卷 483-486页

作者： Xu-Long Chu zeng liu Yu-Song zhi yuan-yuan liu Shao-Hui Zhang Chao wu Ang Gao Pei-Gang Li Dao-You guo Zhen-Ping wu wei-hua Tang Laboratory of Information Functional Materials and Devices School of Science&State Key Laboratory of Information Photonics and Optical CommunicationsBeijing University of Posts and TelecommunicationsBeijing 100876China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China The Engineering Research Center for Semiconductor Integrated Technology Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China China Aerospace System Simulation Technology Co. Ltd.(Beijing)Beijing 100195China Division of Interdisciplinary and Comprehensive Research&Platform for Characterization and Test Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Center for Optoelectronics Materials and Devices&Key Laboratory of Optical Field Manipulation of Zhejiang Province Department of PhysicsZhejiang Sci-Tech UniversityHangzhou 310018China School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026China College of Electronic and Optical Engineering&College of Microelectronics Nanjing University of Posts and TelecommunicationsNanjing 210046China National and Local Joint Engineering Laboratory for RF Integration and Micro-Packing Technologies Nanjing University of Posts and TelecommunicationsNanjing 210046China

We report the edge-defined-film-fed(EFG)-grown β-Ga_(2)O_(3)-based Schottky *** device has a reverse leakage current of ~nA and a rectified ratio of ~10^(4) at ±5 *** addition,the photodiode detector shows a dark current of 0.3 pA,a photo-responsivity(R) of 2.875 mA/W,a special detectivity(D*) of 10^(10) Jones,and an external quantum efficiency(EQE) of 1.4% at zero bias,illustrating a self-powered *** work may advance the development of the Ga_(2)O_(3)-based Schottky diode solar-blind photodetectors.

关键词： β-Ga_(2)O_(3)substrate Schottky photodiode solar-blind detection

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Epidemiological Survey of Hemoglobinopathies Based on Next-Generation Sequencing Platform in Hunan Province,China

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Biomedical and Environmental Sciences 2023年第2期36卷 127-134页

作者： XI Hui liu Qin XIE Dong hua ZHOU Xu TANG Wang Lan TANG De guo zeng Chun Yan WANG Qiong NIE Xing Hui PENG Jin Ping GAO Xiao Ya wu Hong liang ZHANG hao Qing qiu Li FENG zong Hui WANG Shu yuan ZHOU Shu Xiang HE Jun ZHOU Shi hao ZHOU Fa Qun ZHENG Jun Qing WANG Shun Yao chen Shi Ping ZHENG zhi Fen MA Xiao yuan FANG Jun Qun liang Chang Biao WANG hua NHC Key Laboratory of Birth Defect for Research and Prevention Hunan Provincial Maternal and Child Health Care HospitalChangsha 410028HunanChina Yongzhou Hospital for Maternal and Child Health Care Yongzhou 425000HunanChina Changde Hospital for Maternal and Child Health Care Changde 415099HunanChina Hengyang Hospital for Maternal and Child Health Care Hengyang 421009HunanChina Shaoyang Hospital for Maternal and Child Health Care Shaoyang 422001HunanChina Yiyang Hospital for Maternal and Child Health Care Yiyang 413099HunanChina Yueyang Hospital for Maternal and Child Health Care Yueyang 414021HunanChina Center of Prenatal Diagnosis Chenzhou No.1 People’s HospitalChenzhou 423099HunanChina Loudi Hospital for Maternal and Child Health Care Loudi 417599HunanChina huaihua Hospital for Maternal and Child Health Care Huaihua 418099HunanChina Xiangtan Hospital for Maternal and Child Health Care Xiangtan 411104HunanChina Zhuzhou Hospital for Maternal and Child Health Care Zhuzhou 412008HunanChina Changsha Hospital for Maternal and Child Health Care Changsha 410007HunanChina Xiangxi Tujia and Miao Autonomous Prefecture Hospital for Maternal and Child Health Care Jishou 416000HunanChina Zhang Jiajie Centre for maternal and child health family planning services Zhangjiajie 427299HunanChina BGI Genomics BGI-ShenzhenShenzhen 518083GuangdongChina Clinical Laboratory of BGI Health BGI-ShenzhenShenzhen 518083GuangdongChina BGI-wuhan Clinical Laboratories BGI-ShenzhenWuhan 430074HubeiChina SEBIA Representative Office Shanghai 200001China

Objective This study was aimed at investigating the carrier rate of,and molecular variation in,α-andβ-globin gene mutations in Hunan *** We recruited 25,946 individuals attending premarital screening from 42 districts and counties in all 14 cities of Hunan *** screening was performed,and molecular parameters were *** The overall carrier rate of thalassemia was 7.1%,including 4.83%forα-thalassemia,2.15%forβ-thalassemia,and 0.12%for bothα-andβ-*** highest carrier rate of thalassemia was in Yongzhou(14.57%).The most abundant genotype ofα-thalassemia andβ-thalassemia was-α^(3.7)/αα(50.23%)andβ^(IVS-Ⅱ-654)/β^(N)(28.23%),***α-globin mutations[CD108(ACC>AAC),CAP+29(G>C),Hb Agrinio and Hb Cervantes]and sixβ-globin mutations[CAP+8(C>T),IVS-Ⅱ-848(C>T),-56(G>C),beta nt-77(G>C),codon 20/21(-TGGA)and Hb Knossos]had not previously been identified in ***,this study provides the first report of the carrier rates of abnormal hemoglobin variants andα-globin triplication in Hunan Province,which were 0.49%and 1.99%,*** Our study demonstrates the high complexity and diversity of thalassemia gene mutations in the Hunan *** results should facilitate genetic counselling and the prevention of severe thalassemia in this region.

关键词： Thalassemia Carrier rate Molecular spectrum Abnormal hemoglobin variants α-globin triplication

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Prospective study of light dark matter search with a newly proposed DarkSHINE experiment

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Science China(Physics,Mechanics & Astronomy) 2023年第1期66卷 124-138页

作者： Jing chen Ji-yuan chen Jun-Feng chen Xiang chen Chang-Bo Fu Jun guo Le He Zheng-Ting He Kim Siang Khaw Jia-Lin Li liang Li Shu Li Meng Lv Dan-Ning liu Han-Qing liu Kun liu Qi-Bin liu Yang liu Ze-Jia Lu Cen Mo Si-yuan Song Xiao-Long Wang Yu-Feng Wang Zhen Wang Zi-Rui Wang wei-hao wu Dao Xiang Hai-Jun Yang Jun-hua Zhang Yu-Lei Zhang zhi-Yu Zhao Xu-liang Zhu Chun-Xiang Zhu Yi-Fan Zhu Tsung-DaoLee Institute Shanghai Jiao Tong UniversityShanghai 201210China Institute of Nuclear and Particle Physics School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Key Laboratory for Particle Astrophysics and Cosmology(MOE) Shanghai Key Laboratory for Particle Physics and Cosmology(SKLPPC)Shanghai 200240China Center for High Energy Physics Peking UniversityBeijing 10087lChina School of Mechanical and Electronic Engineering Suzhou UniversitySuzhou 234000China School of Aeronautics and Astronautics Shanghai Jiao Tong UniversityShanghai 200240China School of Electronics Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China R&D Center Shanghai Instituteof CeramicsChinese Academyof SciencesShanghai 20189China Key Laboratory of Nuclear Physics and lon-beam Application(MOE) Fudan UniversityShanghai 200443China Institute of Modern Physics Fudan UniversityShanghai 200443China IKey Laboratory for Laser Plasmas(MOE) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Zhangjiang Institute for Advanced Study Shanghai JiaoTong UniversityShanghai 200240.China College of Literature Scienceand the ArtsUniversity of MichiganAnn Arbor MI 48109-1040USA Deparment of Physics Swiss Federal Institnute of Technology ZurichZurich 8093Swizerland

Dark photons have been well motivated as strong candidates for dark force carriers and light dark matter in the sub-GeV mass *** with collider experiments,fixed-target experiments provide a complementary approach to searching for dark photons,particularly in the lower mass *** have studied the physics potential of the electron-on-target experiment based on the Shanghai SHINE facility,which provides 10 MHz single electron beam at 8 GeV *** analysis focuses on dark photons being produced via electron and nucleon interaction and then decays to dark matter candidates,which escape detection as missing momentum in the *** experiment takes advantage of using missing momentum to enhance signal versus background separation *** this study,signal samples as a function of dark photon mass and an inclusive background sample with 2.5 billion events are simulated with *** better background estimates,major rare background processes have also been *** paper presents the experiment and detector design,signal and background simulations,analysis strategy,and the prospective study of the experiment *** 9×10^(14) electron-on-target events(about three years running),this experiment is expected to rule out most of the sensitive regions predicted by popular dark photon models.

关键词： dark matter dark photon electron-on-target experiment

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鼻咽癌放疗后骨肉瘤的临床病理特点和预后

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中华耳鼻咽喉头颈外科杂志 2005年第11期40卷 814-818页

作者：刘巍巍陈直华吴秋良伍国号曾宗渊中山大学肿瘤防治中心综合三科广州510060 中山大学肿瘤防治中心病理科中山大学肿瘤防治中心头颈科广州510060

目的本文探讨鼻咽癌放疗后骨肉瘤的临床病理特征、治疗和预后。方法回顾1964—2003年于中山大学肿瘤防治中心治疗的426例骨肉瘤患者,其中15例诊断为鼻咽癌放疗后骨肉瘤。描述其发生率,发生时间,好发部位,影像学特征,病理亚型以及治疗情... 详细信息

目的本文探讨鼻咽癌放疗后骨肉瘤的临床病理特征、治疗和预后。方法回顾1964—2003年于中山大学肿瘤防治中心治疗的426例骨肉瘤患者,其中15例诊断为鼻咽癌放疗后骨肉瘤。描述其发生率,发生时间,好发部位,影像学特征,病理亚型以及治疗情况。随访并应用KaplanMeier法统计生存率并分析影响预后的相关因素。结果12例行根治性手术治疗患者中1例局部残留,6例术后局部复发。复发间隔时间5～19个月(平均9个月)。所有患者生存时间介于7～41个月,平均18个月。1年和2年累积生存率分别为60%和24%。影像学上有大量骨形成的女性患者较仅有少量或无骨形成男性患者的生存率明显增高。预后分析显示年龄、放疗剂量、放疗后骨肉瘤发生时间、肿瘤大小和治疗情况可能不是预后的影响因素。结论鼻咽癌放疗后骨肉瘤是高度恶性的肿瘤,预后差。手术联合术前术后化疗有可能改善预后。

关键词：鼻咽肿瘤肿瘤,辐射性骨肉瘤病理学,临床预后

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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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10B-doped MCP detector developed for neutron resonance imaging at Back-n white neutron source

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Nuclear Science and Techniques 2024年第8期35卷 58-68页

作者： Qiang Li Li‑Jiao Wang Jing‑Yu Tang Xiang‑Biao qiu Zhen chen Mao‑yuan Zhao Chang‑Jun Ning Kai Pan wei Xu Tao Li Su‑Peng Lu Han Yi Rui‑Rui Fan Chang‑Qing Feng Rong Zhang Xiao‑Yang Sun Qi An hao‑Fan Bai Jiang‑Bo Bai Jie Bao Ping Cao Qi‑Ping chen Yong‑hao chen zeng‑Qi Cui An‑Chuan Fan Fan‑Zhen Feng Min‑hao Gu Chang‑Cai Han Zi‑Jie Han guo‑Zhu He Yong‑cheng He Yang Hong Yi‑wei Hu Han‑Xiong huang wei Jiang zhi‑Jie Jiang Zheng‑Yao Jin Ling Kang Bo Li Gong Li Xiao Li Yang Li Jie liu Rong liu Shu‑Bin liu Yi‑Na liu Guang‑yuan Luan Jie Ren zhi‑Zhou Ren Xi‑Chao Ruan Zhao‑Hui Song Kang Sun zhi‑Xin Tan Sheng‑Da Tang Jin‑cheng Wang Peng‑cheng Wang Zhao‑Hui Wang Zhong‑wei Wen Xiao‑Guang wu Xuan wu Cong Xia Yong‑Ji Yu guo‑Hui Zhang Hang‑Chang Zhang Lin‑hao Zhang Qi‑wei Zhang Xian‑Peng Zhang Yu‑liang Zhang Yue Zhang zhi‑Yong Zhang zhi‑hao Zhou Ke‑Jun Zhu Chong Zou 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 Physics Chinese Academy of SciencesBeijing 100049China Dongguan Songshan Lake Future School Dongguan 523808China 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 North Night Vision Science and Technology(Nanjing)Research Institute Co.Ltd Nanjing 211106China 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 Modern Physics Fudan UniversityShanghai 200433China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China China Academy of Engineering Physics Institute of Nuclear Physics and ChemistryMianyang 621900China 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 China Shipbuilding Trading Co. LtdBeijing 100044China

Neutron resonance imaging(NRI)has recently emerged as an appealing technique for neutron *** complexity surpasses that of conventional transmission imaging,as it requires a high demand for both a neutron source and ***,the progression of NRI technology has been sluggish since its inception in the 1980s,particularly considering the limited studies analyzing the neutron energy range above *** white neutron source(Back-n)at the China Spallation Neutron Source(CSNS)provides favorable beam conditions for the development of the NRI technique over a wide neutron energy range from eV to ***-sensitive microchannel plates(MCP)have emerged as a cutting-edge tool in the field of neutron detection owing to their high temporal and spatial resolutions,high detection efficiency,and low *** this study,we report the development of a 10B-doped MCP detector,along with its associated electronics,data processing system,and NRI experiments at the *** heavy elements such as gold,silver,tungsten,and indium can be easily identified in the transmission images by their characteristic resonance peaks in the 1–100 eV energy range;the more difficult medium-weight elements such as iron,copper,and aluminum with resonance peaks in the 1–100 keV energy range can also be *** particular,results in the neutron energy range of dozens of keV(Aluminum)are reported here for the first time.

关键词： Neutron resonance imaging 10B doped MCP detector White neutron source Sample nuclide identification

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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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SAPT:a synchrotron-based proton therapy facility in Shanghai

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Nuclear Science and Techniques 2023年第10期34卷 36-46页

作者： Man-Zhou Zhang De-Ming Li Li-Ren Shen Hai-Rong Zhang zhi-Ling chen Han-Wen Du Ming Gu Rui Li De-Kang liu Yue-Hu Pu Jun-Feng Yu Jian-Feng chen Chu chen Chun-Long guo hao guo Ge-Yang Jiang zhi-Qiang Jiang Lin Jin Wen-Jing Li Xiu-Fang Li Ye Lin Ming liu Yong-hao liu Ya-Juan liu Ming Lv Qing-Ru Mi Lian-hua Ouyang wei-guo Shi Hang Shu Qi-Sheng Tang Kun Wang zhi-Shan Wang Jun wu Xiao-Bing wu Jia-Qiang Xu Wen-Zhen Xu Chong-Xian Yin cheng Yu Ren-Xian yuan Qi-Bing yuan Hai-Qun Zhang Miao Zhang Wen-zhi Zhang Li-Ying Zhao wei-Min Zhou Shou-Xian Fang Xi-Dong Sun Zhen-Tang Zhao Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201204China APACTRON Particle Equipment Co. Ltd.Shanghai 201815China The Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China

Because of its excellent dose distribution,proton therapy is becoming increasingly popular in the medical application of cancer treatment.A synchrotron-based proton therapy facility was designed and constructed in *** synchrotron,beam delivery system,and other technical systems were commissioned and reached their expected *** a clinical trial of 47 patients was finished,the proton therapy facility obtained a registration certificate from the National Medical Products *** characteristics of the accelerator and treatment systems are described in this article.

关键词： Proton therapy Synchrotron Slow extraction Gantry Beam delivery system

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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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