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Probing the Non-equilibration Component of Tilting Spin Mode

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Chinese journal of nuclear physics 1994年第2期16卷 108-111页

作者： Liu, Zuhua Zhang, Huanqiao Xu, Jincheng Qian, XIng Qiao, Yu lin, chengjian Xu, Kan China Inst of Atomic Energy Beijing China

-The probabilities PNCNE of non-equilibration component of tilting spinmode have been extracted from the experimental fragment anisotropies for thesystems of 16O+232Th,19F+232Th,and 16O+238*** is found that as a function ofBf（〈L〉）/Tsad,the values of PNCNF observed experimentally and expected on the ba-sis of fission before equilibration model have opposite trends.

关键词： Fission Tilting spin mode Non-equilibration

Construction and Application of Identifier Resolution in Automotive Industrial Internet

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ZTE Communications 2020年第1期18卷 55-65页

作者： lin chengjian LIU Xinwei Foton Motor Inc. Beijing 102206China School of Electronic and Computer Engineering Peking UniversityShenzhenGuangdong 518055China

Identifier resolution system in the automotive industrial Internet is necessary for building a fully interconnected infrastructure with people,machines,factories,products and *** resolution system can not only ensure the comprehensive interconnection and efficiency of research and development,procurement,production,sales,and after-sales service in automotive industry,but also promote the integration of automotive industrial data,which facilitates the integrated development of traditional automotive manufacturing and the industrial *** paper focuses on processes and methods of building identifier resolution system for the automotive industry and summarizes the construction and development of secondary node in the automotive industrial Internet in order to explore a suitable road to a rich and completed application ecosystem.

关键词： industrial Internet identifier resolution secondary node auto industry

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质子滴线核在近垒能区的反应机制研究进展

原子核物理评论 2024年第1期41卷 141-147页

作者：尹诚杨磊林承键马南茹贾会明温培威杨峰骆天鹏常昶黄志杰段海锐杨炅和中国原子能科学研究院北京102413

质子滴线核在近垒能区的反应机制,尤其是破裂机制,是当前核物理领域的前沿热点问题。为了深入考察质子滴线核的反应动力学,基于日本东京大学的CRIB终端开展了^(8)B+^(120)Sn和^(17)F+^(58)Ni体系在近垒能区的完全运动学测量。本工作在... 详细信息

质子滴线核在近垒能区的反应机制,尤其是破裂机制,是当前核物理领域的前沿热点问题。为了深入考察质子滴线核的反应动力学,基于日本东京大学的CRIB终端开展了^(8)B+^(120)Sn和^(17)F+^(58)Ni体系在近垒能区的完全运动学测量。本工作在综述前期研究结果的基础上,首次展示了^(8)B+^(120)Sn测量中的熔合截面结果。实验设置方面,针对各自反应体系产物的特点,分别设计了高效率的硅探测器阵列STARE和基于电离室的多层望远镜阵列MITA,实现了反应产物的完全鉴别。对于质子晕核8B+120Sn体系首次实现了破裂碎片的符合测量,重构了完整的破裂过程,揭示了^(8)B出射道瞬时破裂为主的弹性破裂机制。对于质子滴线核^(17)F+^(58)Ni体系则首次实现了全反应道测量,提取了准弹、破裂和总熔合反应的信息,并发现在垒下能区存在熔合截面增强的现象。理论分析表明,这主要是由于破裂连续态的耦合效应所导致,并且8B和17F存在不同的直接反应机制,表明质子晕结构对反应机制存在显著影响。

关键词：质子滴线核库仑势垒能区反应机制

Neutron halo state of ^(13)C

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Chinese Science Bulletin 2001年第1期46卷 43-45页

作者： LIU Zuhua, lin chengjian, LI Zhichang, ZHANG Huanqiao, CHEN Baoqiu, MA Zhongyu, WU Yuewei, LIU Jiancheng & LI ShuyuanChina Institute of Atomic Energy, Beijing 102413, China China Institute of Atomic Energy Beijing China

Angular distributions for the 12C(d, p)13C transfer reactions have been measured at Ed = 11.8 MeV, and compared with those of the DWBA calculations. By means of this comparison, density distributions of the last neutron in the ground state and the first 1/2+ state of 13C are extracted. The properties of these states in 13C have also been studied in the framework of the nonlinear relativistic mean-field theory with NL-SH parameters. It is found that the first l/2+ state in 13C is a neutron halo state shown by both the experimental and theoretical density distributions of the last neutron.

关键词： transfer reaction DWBA relativistic mean-field theory nucleon density distributions neutron halo of excited state.

Enhanced monopole transition strength from the cluster decay of ^(13)C

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Science China(Physics,Mechanics & Astronomy) 2019年第1期62卷 49-55页

作者： Jun Feng Yanlin Ye Biao Yang chengjian lin HuiMin Jia DanYang Pang ZhiHuan Li Jianling Lou QiTe Li XiaoFei Yang Jing Li HongLiang Zang Qiang Liu Wei Jiang ChenGuang Li Yang Liu ZhiQiang Chen HongYi Wu ChunGuang Wang Wei Liu Xiang Wang JingJing Li DiWen Luo Ying Jiang ShiWei Bai JinYan Xu NanRu Ma LiJie Sun DongXi Wang School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University China Institute of Atomic Energy School of Physics and Nuclear Energy Engineering Beihang University Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang University

The inelastic excitations and cluster decay of ^(13)C have been measured using the reaction,9Be(^(13)C, ^(13)C* →~9Be + α)~9Be. We observe strong excitation to the 14.3-MeV(1/2-) resonant state from the cluster-decay channel, leading to an enhanced monopole matrix element of(6.3 ± 0.6) fm^2. This large cluster-related monopole strength is a clear indication of the cluster-structure domination of this state and is consistent with the recent prediction of the orthogonality condition model(OCM). It would be interesting to further explore the three-center molecular rotational band that is initiated from the observed band-head.

关键词： inelastic excitation monopole transition cluster decay

^(17)F+^(58)Ni弹性散射和破裂反应实验装置的设计

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北京航空航天大学学报 2015年第9期41卷 1708-1713页

作者：郑垒林承键张高龙贾会明张焕乔北京航空航天大学物理科学与核能工程学院北京100191 中国原子能科学研究院核物理研究所北京102413

近库仑位垒能区弱束缚原子核的动力学效应研究是当前热点问题之一.但是由于缺乏对其实验方面的研究,没有系统性的结论,因此需要大力开展实验方面的研究工作.针对质子滴线核17F在中重靶核58Ni上的弹性散射和破裂反应设计了实验装置.根据... 详细信息

近库仑位垒能区弱束缚原子核的动力学效应研究是当前热点问题之一.但是由于缺乏对其实验方面的研究,没有系统性的结论,因此需要大力开展实验方面的研究工作.针对质子滴线核17F在中重靶核58Ni上的弹性散射和破裂反应设计了实验装置.根据反应运动学,利用蒙特卡罗程序模拟计算了散射的17F分布,以及破裂产生的16O和质子分布.根据模拟计算,得到了实验装置的参数,包括探测几何效率,覆盖的立体角,反应产物17F、16O和质子的能量沉积和几何关系等.这套装置对16O和质子的符合效率为4.7%±0.1%,这为实验的开展打好了基础.用此装置,将可以在一系列国际大科学装置上开展实验.

关键词：奇特核弹性散射破裂反应探测器模拟符合效率实验装置

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质子滴线核在近库仑势垒能区的反应动力学

Science Bulletin 2023年第8期68卷 775-778页

作者：杨磊林承键马南茹温培威贾会明 Department of Nuclear Physics China Institute of Atomic EnergyBeijing 102413China

The nuclear drip line corresponds to zero binding for protons and neutrons,defining the boundary of nuclide *** the drip lines,nuclei become unbound,in respect to nucleon *** located closest to the drip line,which are commonly referred to as drip line nuclei,may exhibit phenomena untypical for tightly bound nuclei in the valley of stability.

关键词： stability. 反应动力学 boundary

High-lying excited states in ^10Be from the ^9Be(^9Be,^10Be)^8Be reaction

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Science China(Physics,Mechanics & Astronomy) 2017年第6期60卷 48-52页

作者： Wei Jiang Yanlin Ye ZhiHuan Li chengjian lin QiTe Li YuCheng Ge Jianling Lou DongXing Jiang Jing Li ZhengYang Tian Jun Feng Biao Yang ZaiHong Yang Jie Chen HongLiang Zang Qiang Liu PengJie Li ZhiQiang Chen Yun Zhang Yang Liu XiaoHui Sun Jing Ma HuiMing Jia XinXing Xu Lei Yang NanRu Ma LiJie Sun School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University Beijing 100871 China China Institute of Atomic Energy Beijing 102413 China

A transfer-reaction experiment of ~9Be(~9Be,^(10)Be)~8Be was performed at a beam energy of 45 Me *** states in ^(10)Be up to 18.80 Me V are produced using missing mass and invariant mass *** of the observed high-lying resonant states,reconstructed from theα+~6He and t+~7Li decay channels,agree with the previously reported *** addition,two new resonances at 15.6 and 18.8 Me V are identified from the present *** 18.55 Me V state is found to decay into both the t + ~7Lig:s: and t + ~7Li?(0.478 MeV) channels, with a relative branching ratio of 0:93 ± 0:33. Further theoretical investigations are encouraged to interpret this new information on cluster structure in neutron-rich light nuclei.

关键词： transfer reaction high-lying excited states cluster decay invariable mass method

通过4-α衰变观测^(16)O中可能的玻色凝聚态

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原子核物理评论 2024年第1期41卷 292-298页

作者：陈家豪叶沿林马凯韩家兴王东玺林承键贾会明杨磊李根阳黎升胡梓瑶谭智威魏康蒲伟良陈莹楼建玲杨晓菲李奇特杨再宏骆天鹏黄大湖钟善豪李智焕许金艳北京大学物理学院和核物理与核技术国家重点实验室北京100871 中国原子能科学研究院核物理研究所北京102413 广西师范大学物理科学与技术学院广西桂林541004

近期在中国原子能科学研究院北京串列加速器核物理国家实验室开展的^(16)O+^(12)C非弹散射实验,给出了^(16)O中存在4-α玻色凝聚状态的新证据。实验采用多套双面硅微条带电粒子望远镜,首次在^(16)O衰变中实现了4个α粒子的准确识别(Part... 详细信息

近期在中国原子能科学研究院北京串列加速器核物理国家实验室开展的^(16)O+^(12)C非弹散射实验,给出了^(16)O中存在4-α玻色凝聚状态的新证据。实验采用多套双面硅微条带电粒子望远镜,首次在^(16)O衰变中实现了4个α粒子的准确识别(Particle Identification,PID)和符合测量。在此基础上获得了高分辨的反应O值谱并重建了清晰的4-α共振态。其中在阈值附近观察到4个高显著度(大部分高于5σ)的共振态,它们按照^(12)C(Hoyle state)+α的特征模式衰变,与理论预言的类Hoyle-BEC结构及其转动带特征相一致。本观测结果将推动进一步的理论研究,实验上也需要对上述共振态做更多物理量的观测。

关键词：集团结构类Hoyle态 ^(16)O的共振态高激发