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离子束抛光对单晶硅表面质量影响的分子动力学模拟研究

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原子与分子物理学报 2025年第6期42卷 113-121页

作者：赵仕燕郭海林黄思玲张旭夏超翔王大森聂凤明裴宁李晓静中国兵器科学研究院宁波分院宁波315103

离子束抛光作为一种超精密加工技术,被应用于材料表面抛光的精抛阶段,而其原子量级的去除效果使得它的加工过程与加工效果难以直接观察,因此为了能够从微观尺度研究离子束抛光的加工效果以及加工参数对材料表面粗糙度与表面损伤的影响,... 详细信息

离子束抛光作为一种超精密加工技术,被应用于材料表面抛光的精抛阶段,而其原子量级的去除效果使得它的加工过程与加工效果难以直接观察,因此为了能够从微观尺度研究离子束抛光的加工效果以及加工参数对材料表面粗糙度与表面损伤的影响,提出使用分子动力学模拟的方法研究离子束抛光过程,通过对氩离子轰击单晶硅的仿真模拟,分析加工参数对单晶硅表面粗糙度与晶格损伤的影响规律,指导实际的加工工艺设计.研究发现,在不同加工角度下,离子剂量对于表面粗糙度的影响规律不同,低角度(0°~40°)低剂量以及高角度(>50°)高剂量的加工有助于达到较低的表面粗糙度;随着加工角度的增加,离子束对晶体表面造成的损伤逐渐减少,当加工角度大于40°时能够大幅度减少晶格损伤.模拟结果显示在实际的离子束抛光过程中,为了得到高质量的表面,应该采取高角度高剂量的加工方式以达到既降低材料表面粗糙度又减小对材料表面晶格产生损伤的目的.

关键词：离子束抛光表面质量分子动力学单晶硅加工角度

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Extracorporeal membrane oxygenation in curing a young man after modified Fontan operation:A case report

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World Journal of Clinical Cases 2022年第29期10卷 10614-10621页

作者： He-Bing Guo Jian-Bo Tan Yong-chao Cui Hao-feng Xiong Chuan-Sheng li Yu-feng liu Yao Sun lin Pu Pan Xiang Ming zhang Jing-Jing Hao ning-ning Yin Xiao-Tong Hou Jing-Yuan liu Department of Critical Care Medicine Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China Center for Cardiac Intensive Care Beijing Anzhen HospitalCapital Medical UniversityBeijing 100029China

BACKGROUND The Fontan operation is the only treatment option to change the anatomy of the heart and help improve patients’ *** successful operation,patients typically recover the ability to engage in general physical *** a better ventilatory strategy,extracorporeal membrane oxygenation(ECMO) provides gas exchange via an extracorporeal circuit,and is increasingly being used to improve respiratory and circulatory *** the modified Fontan operation,circulation is different from that of patients who are not subjected to the *** paper describe a successful case using ECMO in curing influenza A infection in a young man,who was diagnosed with Tausing-Bing syndrome and underwent Fontan operation 13 years *** special cardiac structure and circulatory characteristics are explored in this *** SUMMARY We report a successful case using ECMO in curing influenza A infection in a 23-year-old man,who was diagnosed with Tausing-Bing syndrome and underwent Fontan operation 13 years *** man was admitted to the intensive care unit with severe acute respiratory distress syndrome as a result of influenza A *** was initially treated by veno-venous(VV) ECMO,which was switched to veno-venous-arterial ECMO(VVA ECMO) 5 d *** circulation and respiratory function gradually improved,the VVA ECMO equipment was removed on May 1,*** patient was successfully withdrawn from artificial ventilation on May 28,2018 and then discharged from hospital on May 30,*** After the modified Fontan operation,circulation is different compared with that of patients who are not subjected to the *** are certainly many differences between them when they receive the treatment of *** to the special cardiac structure and circulatory characteristics,an individualized liquid management strategy is necessary and it might be better for them to choose an active circulation support earlier.

关键词： Acute respiratory distress syndrome Extracorporeal membrane oxygenation Modified Fontan operation Tausing-Bing syndrome Case report

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羽叶千里光中一个新的双黄酮

中国药科大学学报 2008年第1期39卷 20-22页

作者：李宁张朝凤张勉中国药科大学现代中药教育部重点实验室生药学研究室南京210038

目的:对羽叶千里光(Senecio argunensis Turcz.)全草的化学成分进行研究。方法:应用柱层析色谱技术分离羽叶千里光全草提取物,根据理化性质和光谱数据鉴定各化合物结构。结果:分离鉴定了11个化合物,分别为8,8″-亚甲基双(3,3′,4′,5,7... 详细信息

目的:对羽叶千里光(Senecio argunensis Turcz.)全草的化学成分进行研究。方法:应用柱层析色谱技术分离羽叶千里光全草提取物,根据理化性质和光谱数据鉴定各化合物结构。结果:分离鉴定了11个化合物,分别为8,8″-亚甲基双(3,3′,4′,5,7-五羟基黄酮)(1)、异鼠李素(2)、克氏千里光碱(3)、琥珀酸(4)、β-胡萝卜苷(5)、槲皮素、金丝桃苷、槲皮素-5-O-β-D-葡萄糖苷、千里光碱、千里光菲林碱和β-谷甾醇。结论:化合物1为新化合物,命名为8,8″-亚甲基双槲皮素,化合物2～5为首次从该植物中分得。

关键词：羽叶千里光化学成分 8,8″-亚甲基双槲皮素黄酮吡咯里西啶生物碱

Structural characteristics of the KPR-CBR triple-junction inferred from gravity and magnetic interpretations,Philippine Sea Plate

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China Geology 2021年第4期4卷 541-552页

作者： Lu-ning Shang Pan-feng li Run-lin Du feng-long Bai Gang Hu Wen-chao Lü Xia li Xi Mei Tian-yu zhang Hou-zhen Cao Jing-yi Cong Xian-yao Shi Qingdao Institute of Marine Geology China Geological SurveyMinistry of Natural ResourcesQingdao 266071China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and TechnologyQingdao 266000China China Geological Survey Ministry of Natural ResourcesBeijing 100037China

The intersection of the Kyushu-Palau Ridge(KPR)and the Central Basin Rift(CBR)of the West Philippine Basin(WPB)is a relic of a trench-trench-rift(TTR)type triple-junction,which preserves some pivotal information on the cessation of the seafloor spreading of the WPB,the emplacement and disintegration of the proto-Izu-Bonin-Mariana(IBM)Arc,and the transition from initial rifting to steady-state spreading of the Parece Vela Basin(PVB).However,the structural characteristics of this triple-junction have not been thoroughly *** this paper,using the newly acquired multi-beam bathymetric,gravity,and magnetic data obtained by the Qingdao Institute of Marine Geology,China Geological Survey,the authors depict the topographic,gravity,and magnetic characteristics of the triple-junction and adjacent *** including the upward continuations and total horizontal derivatives of gravity anomaly are also performed to highlight the major structural features and *** on these works,the morphological and structural features and their formation mechanisms are *** results show that the last episode amagmatic extension along the CBR led to the formation of a deep rift valley,which extends eastward and incised the *** morphological and structural fabrics of the KPR near and to the south of the triple-junction are consistent with those of the western PVB,manifesting as a series of NNE-SSW-and N-S-trending ridges and troughs,which were produced by the extensional faults associated with the initial rifting of the *** superposition of the above two reasons induced the prominent discontinuity of the KPR in deep and shallow crustal structures between 15°N‒15°30′N and 13°30′N‒14°*** with previous authors’results,we propose that the stress produced by the early spreading of the PVB transmitted westward and promoted the final stage amagmatic extension of the *** eastward propagation of the CBR destroyed the KPR,of which the magmatis

关键词： Kyushu-Palau Ridge Central Basin Rift Tecto-morphological features Gravity and magnetic anomalies Back-arc spreading Structural discontinuities Philippine Sea Plate Marine scientific survey

Anatomical variation of infra-pyloric artery origination： A prospective multicenter observational study (IPA-Origin)

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Chinese Journal of Cancer Research 2018年第5期30卷 500-507页

作者： Rulin Miao Jianjun Qu Zhengrong li Daguang Wang Jiang Yu Weidong Zang Yong li fenglin liu Jian zhang Wu Song Kai Ye Su Yan Wei Wang Shuangyi Ren Lu Zang Changqing Jing li zhang Kuan Wang Weihua Fu lin Fan Bin liang Gang Zhao Jun Cai li Yang Jiaming Zhu Jun You Kun Yang Qingxing Huang Zhaojian Niu ning ning Xingfeng Qiu Gang Ji feng liang Hua Huang chao Gao Fei Shan Shuangxi li Yongning Jia lianhai zhang Xiangji Ying Yan zhang Zhaode Bu Xiangqian Su Gang Zhao Ziyu li Jiafu Ji Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing) Gastrointestinal Cancer Center Peking University Cancer Hospital & Institute Beijing 100142 China Department of Surgical Oncology Weifang People's Hospital Weifang 261000 China Department of General Surgery the First Affiliated Hospital of Nanchang University Nanchang 330006 China Department of Gastrointestinal Surgery the First Hospital of Jilin University Changehun 130021 China Department of General Surgery Nanfang Hospital Southern Medical University Guangzhou 510515 China Department of Gastrointestinal Cancer Surgery Fujian Provincial Cancer Hospital Fuzhou 350014 China Department of General Surgery Guangdong General Hospital Guangdong Academy of Medical Sciences Guangzhou 510080 China Department of General Surgery Zhongshan Hospital Fudan University Shanghai 200032 China Department of Gastrointestinal Surgery Hangzhou First People's Hospital Hangzhou 310006 China Department of Gastrointestinal Surgery the First Affiliated Hospital Sun Yat-sen University Guangzhou 510080 China Department of Surgical Oncology the Second Affiliated Hospital of Fujian Medical University Quanzhou 362000 China Department of Surgical Oncology Affiliated Hospital of Qinghai University Xining 810001 China Department of Gastrointestinal Surgery Guangdong Provincial Hospital of Chinese Medicine Guangzhou 510120 China Department of General Surgery the Second Hospital of Dalian Medical University Dalian 116023 China Department of General Surgery Shanghai Ruijin Hospital Shanghai Jiaotong University School of Medicine Shanghai 200025 China Department of Gastrointestinal Surgery Shandong Provincial Hospital Affiliated to Shandong University Jinan 250021 China Department of Gastrointestinal Surgery Harbin Medical University Cancer Hospital Harbin 150081 China Department of General Surgery Tianjin Medical University General Hospital Tianjin 300052 China Department of General Surgery the Firs

Objective： Infra-pyloric artery （IPA） is an important anatomical landmark in treatment of gastric cancer and is the key vessel for pylorus-preserving gastrectomy and subgroup of infra-pyloric lymph nodes. However, its anatomical variation is not thoroughly understood. Our study aimed to clarify the origination of the IPA. Methods： We did this prospective, multicenter, open-label, observational study at gastric surgery departments of 34 hospitals in China. Gastric cancer patients aged 18 years or older and scheduled to undergo elective total or distal gastrectomy were assigned. During the surgery, IPA dissecting and exposing the origination point with photographs or video clips were required. The primary outcome was the origination of the IPA. Analysis of variance, χ2 tests and Fisher＇s tests were used to analyze the differences between groups. The study is registered at *** （No. NCT03071237）. Results： Between May 8 and July 31, 2017, 429 patients were assigned for the study, and 419 （97.7%） patients had the IPA dissected and recorded through photograph or video and were included in the primary outcome analysis. The median age was 62 years old, and 73.7% were male. Among the patients, 78.5% received laparoscopic surgery. Single IPA origination was identified in 398 （95.0%） patients, including gastroduodenal artery （GDA） in 154 （36.8%） patients, anterior superior pancreaticoduodenal artery （ASPDA） in 130 （31.0%） patients, and right gastroepiploic artery （RGEA） in 114 （27.2%） patients. Fifteen （3.6%） patients were identified with multiple IPA and 6 （1.4%） patients were identified as IPA absence. The differences in the distribution of surgical approach （P=0.003） and geographic area （P=0.030） were statistically significant. No difference was shown in sex, age, gastrectomy type, tumor location, and clinical T, N and M stage. Conclusions： Our study found that the IPA originates from GDA, ASPDA and RGEA in similar proportions. Laparoscopic surgery may be more

关键词： Infra-pyloric artery origination anatomy gastric cancer

Centralized isolation of Helicobacter pylori from multiple centers and transport condition influences

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World Journal of Gastroenterology 2015年第3期21卷 944-952页

作者： Ya-Nan Gong You-Ming li ning-Min Yang Hong-zhang li feng Guo Lang lin Qun-Ying Wang Jia-Kun zhang Zi-Zhong Ji Ji-Bo Mao Jun-liang Mao Zheng-chao Shi Wu-Heng Tang Xin-Jian Zhu Wei Shao Xiao-feng zhang Xing-Hua Wang Yue-feng Tong Mi-Zu Jiang Guang-Lan Chen Zhi-Yong Wang Hui-Min Tu Guo-Fa Jiang Jian-Sheng Wu Xu-Peng Chen Qiu-Long Ding Hong Ouyang feng-Zhe Jin Yan-li Xu Jian-Zhong zhang State Key Laboratory for Infectious Disease Prevention and Control National Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and Prevention Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases The First Affiliated Hospital College of MedicineZhejiang University Zhiyuan Medical Inspection Institute Co. Ltd. Sanmen People’s Hospital The First People’s Hospital of Xiaoshan District The First People’s Hospital of Cangnan Jinhua Municipal Central Hospital The First People’s Hospital of Pingyang The First Hospital of Jiaxing Zhoushan Hospital The First People’s Hospital of Wenling Rui’an People’s Hospital Maternal and Child Health Hospital of Zhoushan City Shangyu People’s Hospital People’s Hospital of Putuo District Zhoushan Hangzhou First People’s Hospital Qingtian People’s Hospital The First People’s Hospital of Yongkang The Children’s Hospital Zhejiang University School of Medicine lishui People’s Hospital The Affiliated Hospital of Hangzhou Normal University Wuxi No.4 Hospital Affiliated to Suzhou University Jinhua Wenrong Hospital The First Affiliated Hospital of Wenzhou Medical College Yueqing People’s Hospital Tiantai People’s Hospital lin’an people’s Hospital Rui’an City TCM Hospital Medical College of Hebei University of Engineering

AIM:To evaluate the efficacy of centralized culture and possible influencing ***:From January 2010 to July 2012,66452 patients with suspected Helicobacter pylori(***) infection from 26 hospitals in Zhejiang and Jiangsu Provinces in China underwent gastrointestinal *** mucosal biopsies were taken from the antrum for *** biopsies were transported under natural environmental temperature to the central laboratory in Hangzhou city and divided into three groups based on their transport time:5,24 and 48 *** culture results were reported after 72 h and the positive culture rates were analyzed by a χ2 *** additional 5736 biopsies from ***-positive patients(5646 rapid urease test-positive and 90 14C-urease breath test-positive) were also cultured for quality control in the central laboratory ***:The positive culture rate was 31.66%(21036/66452) for the patient samples and 71.72%(4114/5736) for the ***-positive quality control *** the 5 h transport group,the positiveculture rate was 30.99%(3865/12471),and 32.84%(14960/45553) in the 24 h transport *** contrast,the positive culture rate declined significantly in the 48 h transport group(26.25%; P lined from 36.67%(1462/3987) to 24.12%(1799/7459).When the temperature exceeded 24℃,the positive culture rate decreased significantly,especially in the 48 h transport group(23.17%).CONCLUSION:Transportation of specimens within 24 h and below 24℃ is reasonable and acceptable for centralized culture of multicenter *** samples.

关键词： Centralized isolation Helicobacter pylori Influenc

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

采煤工作面瓦斯涌出量的固有模态SVM建模预测

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系统工程理论与实践 2013年第2期33卷 505-511页

作者：刘俊娥安凤平林大超郭章林张立宁河北工程大学经济管理学院邯郸056038 华北科技学院土木工程系北京101601

首先提出了一个依据EMD(empirical mode decomposition)方法提取固有模态分量进行SVM建模实现采煤工作面瓦斯涌出量预测的技术方法.利用瓦斯涌出量的历史记录数据,通过EMD分解得出其固有模态函数,即IMF分量,然后,对应于每个固有模态分... 详细信息

首先提出了一个依据EMD(empirical mode decomposition)方法提取固有模态分量进行SVM建模实现采煤工作面瓦斯涌出量预测的技术方法.利用瓦斯涌出量的历史记录数据,通过EMD分解得出其固有模态函数,即IMF分量,然后,对应于每个固有模态分别利用SVM函数拟合方法进行外推预测,再把不同固有模态的预测结果进行叠加重构合成,获得瓦斯涌出量的理论预测结果.从监测结果的实例分析发现,与常规SVM方法相比,EMD方法的引入能够大幅度提高理论模型的预测精度,并给出监测数据极为吻合的预测结果.实际应用表明,在采煤工作面瓦斯涌出量预测建模中,固有模态的提取和SVM方法的实施都充分利用了样本数据本身驱动的自适应性质,从而为保障优异的预测效果提供了良好的理论基础.

关键词：瓦斯涌出量预测采煤工作面固有模态支持向量机

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

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

作者： Xing-Yan liu Yi-Wei Yang Rong liu Jie Wen Zhong-Wei Wen Zi-Jie Han Zhi-Zhou Ren Qi An Huai-Yong Bai Jie Bao Ping Cao Qi-Ping Chen Yong-Hao Chen Pin-Jing Cheng Zeng-Qi Cui Rui-Rui Fan Chang-Qing feng Min-Hao Gu feng-Qin Guo Chang-Cai Han Guo-Zhu He Yong-Cheng He Yue-feng He Han-Xiong Huang Wei-ling Huang Xi-Ru Huang Xiao-Lu Ji Xu-Yang Ji Hao-Yu Jiang Wei Jiang Han-Tao Jing ling Kang Ming-Tao Kang Bo li Lun li Qiang li Xiao li Yang li Yang li Shu-Bin liu Guang-Yuan Luan Ying-lin Ma Chang-Jun ning Bin-Bin Qi Jie Ren Xi-chao Ruan Zhao-Hui Song Hong Sun Xiao-Yang Sun Zhi-Jia Sun Zhi-Xin Tan Hong-Qing Tang Jing-Yu Tang Peng-Cheng Wang Qi Wang Tao-feng Wang Yan-feng Wang Zhao-Hui Wang Zheng Wang Qing-Biao Wu Xiao-Guang Wu Xuan Wu li-Kun Xie Han Yi li Yu Tao Yu Yong-Ji Yu Guo-Hui zhang Jing zhang lin-Hao zhang li-Ying zhang Qing-Min zhang Qi-Wei zhang Xian-Peng zhang Yu-liang zhang Zhi-Yong zhang Ying-Tan Zhao liang Zhou Zu-Ying Zhou Dan-Yang Zhu Ke-Jun Zhu Peng Zhu Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics State Key Laboratory of Particle Detection and Electronics Chinese Academy of Sciences(CAS) Department of Modern Physics University of Science and Technology of China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking University Key Laboratory of Nuclear Data China Institute of Atomic Energy Institute of High Energy Physics Chinese Academy of Sciences(CAS) Spallation Neutron Source Science Center University of South China Northwest Institute of Nuclear Technology Department of Engineering and Applied Physics University of Science and Technology of China Beihang University Xi’an Jiaotong University

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

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