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Atomic structure and collision dynamics with highly charged ions

Chinese Physics B 2022年第9期31卷 13-40页

作者： Xinwen Ma Shaofeng zhang Weiqiang Wen Zhongkui Huang Zhimin Hu Dalong Guo Junwen Gao Bennaceur Najjari Shenyue Xu Shuncheng Yan Ke Yao ruitian zhang Yong Gao Xiaolong Zhu Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province College of Physics and Electronic EngineeringNorthwest Normal UniversityLanzhou 730070China Key Laboratory of Radiation Physics and Technology of the Ministry of Education Sichuan UniversityChengdu 610064China Department of Physics Hangzhou Normal UniversityHangzhou 311121China Shanghai EBIT Laboratory Key Laboratory of Nuclear Physics and Ion-Beam Application(MOE)Fudan UniversityShanghai 200433China

The research progresses on the investigations of atomic structure and collision dynamics with highly charged ions based on the heavy ion storage rings and electron ion beam traps in recent 20 years are *** structure part covers test of quantum electrodynamics and electron correlation in strong Coulomb field studied through dielectronic recombi-nation spectroscopy and VUV/x-ray *** collision dynamics part includes charge exchange dynamics in ion-atom collisions mainly in Bohr velocity region,ion-induced fragmentation mechanisms of molecules,hydrogen-bound and van de Waals bound clusters,interference,and phase information observed in ion-atom/molecule *** this achievements,two aspects of theoretical studies related to low energy and relativistic energy collisions are *** applications of data relevant to key atomic processes like dielectronic recombination and charge exchanges involving highly charged ions are *** the end of this review,some future prospects of research related to highly charged ions are proposed.

关键词： highly charged ion atomic structure collision dynamics quantum electrodynamics fragmentation mechanisms relativistic effects electron correlation

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Geometric structure of N_(2)O^(q+)(q=5,6)studied by Ne^(8+)ion-induced Coulomb explosion imaging

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Chinese Physics B 2021年第11期30卷 309-317页

作者： Xi Zhao Xu Shan Xiaolong Zhu Lei Chen Zhenjie Shen Wentian Feng Dalong Guo Dongmei Zhao ruitian zhang Yong Gao Zhongkui Huang Shaofeng zhang Xinwen Ma Xiangjun Chen Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China

We report the study on the complete three-body Coulomb explosion(CE)of N_(2)O^(q+)(q=5,6)induced by 56-keV/u Ne8+ion collision with N2O gaseous *** CE channels for N_(2)O^(5+)and seven for N_(2)O^(6+)are identified by measuring three ionic fragments and the charge-changed projectile in quadruple *** the kinetic energy release(KER)and momentum correlation angle(MCA)distributions of three ionic fragments for each of the CE channels are also *** computation is presented to reconstruct the geometric structure of N_(2)O^(q+0prior to dissociation based on the measured KER and *** N–N and N–O bond lengths and the N–N–O bond angles of N_(2)O^(q+)for each of the channels are determined.

关键词： Coulomb explosion kinetic energy release molecular geometry ion collision nitrous oxide(N_(2)O)

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偏载对铁路货车轴颈轴承概率寿命的影响

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机械工程学报 2015年第24期51卷 177-183页

作者：张瑞田赵永翔蔡慧神华铁路货车运输有限责任公司北京100036 西南交通大学机械工程学院成都610031

偏载恶化车辆服役动力学性能,增加零部件服役载荷,降低动力部件服役寿命。参考标准EN13103/EN 13104/JIS E 4501进一步考虑惯性和结构细节效应,建立新的铁路货车及轮对的偏载简化动力学模型。依据这一模型建立包含轴颈轴承在内的铁路货... 详细信息

偏载恶化车辆服役动力学性能,增加零部件服役载荷,降低动力部件服役寿命。参考标准EN13103/EN 13104/JIS E 4501进一步考虑惯性和结构细节效应,建立新的铁路货车及轮对的偏载简化动力学模型。依据这一模型建立包含轴颈轴承在内的铁路货车相关动力部件服役载荷确定方法。结合标准ISO 281,考虑铁路货车双列圆锥滚动轴承的产品特点及顺序轮对服役的载荷特点,建立轴承载荷和概率寿命的评估方法。通过某35.7 t轴重铁路货车轴颈轴承的偏载效应分析,揭示了偏载引起轴承谱当量载荷非线性增长、概率寿命呈非线性下降,要控制寿命下降率低于30%,服役管理的临界横向偏载程度不大于15 mm,临界纵向偏载程度不大于30 mm。

关键词：铁路货车偏载轴承概率寿命

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Visual Analysis of the Application and Development Trend of Cinnamon in the Field of Traditional Chinese Medicine Based on CiteSpace

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Agricultural Biotechnology 2024年第5期13卷 43-48,54页

作者： Changbang CHEN ruitian zhang Yongxi LAI Yang YANG Tianying LAN Xiangling LI Ning LIANG Guangxi University of Chinese Medicine Nanning 530001China

[Objectives]This study was conducted to explore the application and development trend of Chinese medicinal material cinnamon in the field of traditional Chinese medicine.[Methods]Articles published from 2008 to 2023 were exported using"cinnamon"as the subject word in the Chinese database of *** graphs were drawn by CiteSpace software on the number of articles published,the institutions publishing articles,and keyword clustering,and the data were sorted by *** with the extracted information,the application of cinnamon in traditional Chinese medicine and integrated traditional Chinese and Western medicine was analyzed,and its development trend was discussed and prospected,providing further reference for researchers.[Results]The number of articles published showed an overall upward trend and maintained a high number of *** the analysis of the journals publishing articles,the journal with the largest number of articles was West China Journal of Pharmaceutical Sciences,which had certain *** the analysis of institutions publishing articles,the institution with the largest number of articles was Beijing University of Chinese Medicine,and most institutions had little *** categories was obtained in keyword clustering,respectively,general research,component identification,production process and product development of cinnamon."Glycyrrhizin"was the keyword with the earliest burst time,and the hot words that have received much attention in recent years are"medication law"and"data mining".[Conclusions]The application of cinnamon in the field of traditional Chinese medicine is mainly to treat diseases and as raw materials for traditional Chinese medicine *** development trend is"quality control"and"product research and development".Further research and development of cinnamon in traditional Chinese medicine need to promote the participation of more institutions to participate,and cooperation and communication b

关键词： Cinnamon CiteSpace Application and development trend Visual analysis Traditional Chinese medicine Knowledge graph

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Visual Analysis of Application and Development Trend of Agarwood Based on CiteSpace

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Agricultural Biotechnology 2024年第1期13卷 36-42页

作者： ruitian zhang Changbang CHEN Hui HUANG Shanghua HUANG Kaiwen WEI Yang YANG Ning LIANG Guangxi University of Chinese Medicine Nanning 530001China

The Chinese traditional medicine,agarwood,is a commonly used medicine for regulating qi,which has many clinical applications because of its unique curative *** this study,CiteSpace software was used to visually analyze the application and development trend of agarwood in the literature from CNKI website in the period of *** analysis results showed that the research on agarwood has basically formed core groups of authors,and universities and their affiliated hospitals are main publishing ***,in this study,several research directions of agarwood were also summarized,including clinical research,chemical composition,structural identification and quality standards,showing that agarwood has rich and flexible application prospects in many *** this basis,several suggestions were put forward:strengthening the cooperation between universities and research institutes and building a scientific research cooperation community,and promoting the combination of clinical research and laboratory research.

关键词： Agarwood CiteSpace Knowledge graph Visual analysis Chinese medicine Traditional Chinese Medicine(TCM)

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4 Atomic Physics——4 - 1 Image of Emitted Electrons in Transfer Ionization in Proton-neon Collision at Intermediate Energy

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IMP & HIRFL Annual Report 2012年第1期 199-199,201页

作者： Feng Wentian Ma Xinwen Zhu Xiaolong zhang Shaofeng Liu Huiping Li Bin Yan Shuncheng Xu Shenyue zhang ruitian zhang Pengju Guo Dalong

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钢锭模用灰铸铁服役工况下的组织与力学行为研究

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机械工程学报 2014年第2期50卷 116-124页

作者：兰鹏李阳原卓浩张家泉张瑞天北京科技大学钢铁冶金新技术国家重点实验室北京100083 北京科技大学冶金与生态工程学院北京100083 鞍钢附企综合企业公司鞍山114051

依据灰铁钢锭模的铸造工艺制作试样,通过试验手段,模拟其服役热历程,分析微观组织、力学行为与使用寿命的关系。重点考察不同热作用历程后铸铁的石墨基体与拉伸性能的变化规律。研究发现,珠光体灰铁试样在400℃附近存在抗拉强度随温度... 详细信息

依据灰铁钢锭模的铸造工艺制作试样,通过试验手段,模拟其服役热历程,分析微观组织、力学行为与使用寿命的关系。重点考察不同热作用历程后铸铁的石墨基体与拉伸性能的变化规律。研究发现,珠光体灰铁试样在400℃附近存在抗拉强度随温度升高而增大的反常区,并认为这可能与预先热模拟处理后造成的内耗变化有关。试样经800℃保温3 h并控温冷却后,其600℃以下的抗拉强度可提高45%以上;同时,试样各温度下的抗拉强度均随热循环作用的次数(最多热循环处理50次)增加而减小,且这一现象在20次循环处理后尤为显著。基于光学显微镜、扫描电镜和能谱分析等表征手段,揭示其拉伸性能、变形行为与基体组织形貌的相关性,并探讨大型灰铁钢锭模的失效机制和合理使用工艺。

关键词：铸铁钢锭模组织力学行为

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60年来中国高等教育大众化进程

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现代大学教育 2009年第6期25卷 27-32页

作者：杨德广张瑞田上海师范大学华东师范大学高教研究所

本文剖析了1949年到1978年中国高等教育大众化进程缓慢的原因,以及改革开放后中国高等教育大众化发展的动因,论述了中国高等教育大众化发展的途径:国家增加经费投入,老校挖潜,新建大学园区、大学城,大力发展民办教育、独立学院,积极开... 详细信息

本文剖析了1949年到1978年中国高等教育大众化进程缓慢的原因,以及改革开放后中国高等教育大众化发展的动因,论述了中国高等教育大众化发展的途径:国家增加经费投入,老校挖潜,新建大学园区、大学城,大力发展民办教育、独立学院,积极开展高等教育自学考试,发挥成人教育、远程教育、电视大学的作用,高校扩招加快了高等教育大众化步伐。

关键词：高等教育大众化动因途径

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3-1 Probing the Geometry of Ar2N2 Cluster by Heavy Ions Impact

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IMP & HIRFL Annual Report 2016年第1期 77-78页

作者： Zhu Xiaolong Yan Shuncheng Feng Wentian Guo Dalong Gao Yong zhang ruitian zhang Shaofeng Wang Hanbing Huang Zhongkui zhang Min Hai Bang Zhao Dongmei Wen Weiqiang zhang Pengjun Qian Dongbin Ma Xinwen 不详

The molecular complexes play an important role in planet’s atmosphere and chemical reactions of *** investigation of geometry configurations for molecular complexes is an important subject both in experimental and theoretical *** a prototype molecular system,the investigation of geometry configuration of van der Waals cluster Ar2N2 attracts considerable attention *** different equilibrium configurations of Ar2N2 cluster were reported by experiments as linear conformation[1;2]and theoretical calculations as linear or spatial X-shaped conformations[3-6].

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Orientation Effect in Ar Dimer Fragmentation by Ne^(8+) Ion Impact

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IMP & HIRFL Annual Report 2018年第1期 65-66页

作者： Zhu Xiaolong Yan Shuncheng Feng Wentian Ma Xinwen Chuai Xiaoya Guo Dalong Gao Yong zhang ruitian zhang Pengju zhang Shaofeng Zhao Dongmei Xu Shenyue Wang Hanbing Huang Zhongkui Qian Dongbin 不详

The experiment was carried out using the Reaction Microscope mounted at the 320 kV platform for multidisciplinary research with highly charged ions at the Institute of Modern Physics,CAS[1,2].For reaction channel of(Ar2)^(2+)→Ar^(+)+Ar^(+),the kinetic energy release(KER)distribution clearly shows two *** left peak locates at 3.7 eV approximately,and the right one lies at about 5.3 *** the classical reflection approximation KER/(Z1-Z2)=R,the internuclear distance R can be *** find that the corresponding internuclear distance of the left peak is 3.8˚A,which is the equilibrium internuclear distance of the Ar2 *** indicates that coulomb explosion takes place immediately after the double ionization process,without the involvement of the geometry change of the cluster ***,the left peak dominantly arises from two-site double ionization.

关键词： mounted double approximate

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