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α Decay of the New Isotope ^(204)Ac

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IMP & HIRFL Annual Report 2022年第1期 27-28页

作者： Li Zongchi Huang Minghui gan zaiguo Zhang Zhiyuan Ma Long Wang Jianguo Zhang Mingming Yang Huabin Yang Chunli Huang Xinyuan Zhao Zhen Xu Suyang Chen Lixin Wen Xiaojiang Niu Yifei Yuan Cenxi Tian Yulin Wang Yongsheng Wang Junying Liu Minliang Qiang Yunhua Yang Weiqing Zhang Hongbin Lu Ziwei Guo Song Huang Wenxue He Yuan Ren Zhongzhou Zhou Shangui Zhou Xiaohong Xu Hushan V.K.Utyonkov A.A.Voinov Yu.S.Tsyganov A.N.Polyakov CAS Key Laboratory of High Precision Nuclear Spectroscopy Institute of Modern PhysicsChinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000GuangdongChina Guangxi Key Laboratory of Nuclear Physics and Technology Guangxi Normal UniversityGuilin 541004GuangxiChina School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082GuangdongChina School of Physics Science and Engineering Tongji UniversityShanghai 200092China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Center of Theoretical Nuclear Physics National Laboratory of Heavy-Ion AcceleratorLanzhou 730000China Joint Institute for Nuclear Research RU-141980 DubnaRussian Federation

Proton-andα-decay spectroscopy can provide valuable information on the nuclear structure and masses of neutron-de cient *** 1994,the proton drip line of Ac was reached by the detection of^(207)Ac which was identified... 详细信息

关键词： spectroscopy decay neighboring

Study on Superheavy Nuclide 271Ds

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IMP & HIRFL Annual Report 2011年第1期 38-38页

作者： Zhang Zhiyuan gan zaiguo Ma Long Huang Minghui Huang Tianheng Wu Xiaolei Jia Guobin Li Guangshun Yu Lin Ren Zhongzhou Zhou Shangui Zhang Yuhu Zhou Xiaohong Xu Hushan Zhang Huanqiao Xiao Guoqing Zhan Wenlong Nanjing University Nanjing China. Institute of Theoretical Physics Chinese Academy of Sciences Beijing China. China Institute of Atomic Energy Beijing China.

2-3 Lifetime Measurement of the First 7/2^+State in 143Eu Based on Gas-flled Spectroscopy

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IMP & HIRFL Annual Report 2016年第1期 35-35页

作者： Guo Song Wang Kailong Liu Minliang Zheng Yong Zhou Xiaohong Wang Jianguo Qiang Yunhua Zhang Yuhu gan zaiguo Zhang Zhiyuan Ma Long Yang Huabin Yu Lin Ding Bing Jiang Jian Fang Yongde Li Guangshun Zheng Kuankuan 不详

The application of Lanthanum Bromide(LaBr3)detectors provides a unique opportunity to measure lifetime of excited states in picosecond-nanosecond *** the background is of critical importance to get precise *** some excited states feeding from isomers with lifetime longer than 1μs,it can be achieved by the Spectrometer for Heavy Atom and Nuclear Structure(SHANS)[1].143Eu nuclei were populated via the 123Sb(24Mg,4n)fusion-evaporation *** of the evaporation residues at ground state or long-lived isomers were transferred to detection terminal after a flight of about 1.4μs in *** the case of 143Eu,three transitions have been observed(Fig.1).

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^(230)U重离子衰变的观测

高能物理与核物理 1999年第11期23卷 1039-1043页

作者：潘强岩袁双贵杨维凡李宗伟马桃桃郭俊盛刘明义刘洪业徐树威甘再国孔登明乔际民罗紫华张沐天王书鸿中国科学院近代物理研究所兰州730000 中国科学院高能物理研究所北京100039

利用３５ＭｅＶ的质子束轰击ＴｈＯ２粉末靶，通过(２３２)Ｔｈ（ｐ，３ｎ）反应产生(２３０)Ｐａ核，经用放射化学方法分离出(２３０)Ｐａ核并制成(２３０)Ｐａ→(２３０)Ｕ测量源．用聚乙烯对苯二酸酯固体核径迹探测器记录其发射的重... 详细信息

利用３５ＭｅＶ的质子束轰击ＴｈＯ２粉末靶，通过(２３２)Ｔｈ（ｐ，３ｎ）反应产生(２３０)Ｐａ核，经用放射化学方法分离出(２３０)Ｐａ核并制成(２３０)Ｐａ→(２３０)Ｕ测量源．用聚乙烯对苯二酸酯固体核径迹探测器记录其发射的重离子径迹．经２４８天的收集，观测到了两个(２３０)Ｕ→(２０８)Ｐｈ＋(２２)Ｎｅ衰变事件，相对于α衰变的分支比为（１．３±０．８）×１０－１４．

关键词：核径迹探测器化学蚀刻重离子衰变铀230

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^(208)Hgβ^-衰变γ纲图

高能物理与核物理 2000年第9期24卷 823-828页

作者：张立胡青元赵进华郑纪文李占奎李世红甘再国于涌范红梅郭斌张天梅王春芳王同庆靳根明森田浩介吉田敦蒲越虎工藤久昭矢野安重中国科学院近代物理研究所兰州730000 日本理化学研究所回旋加速器室日本新泻大学核化学系

以18 O重离子束轰击厚天然铅靶 ,通过多核子转移反应生成2 0 8Hg核 .辐照铅片放入离线熔化铅靶气相热色谱装置中处理 ,分离并收集汞元素产物 .完成了 4πΔEβγ γ ,γ X(γ)关联事件谱及γ射线时序单谱测量 .建议了 2 1条γ射线 ,以... 详细信息

以18 O重离子束轰击厚天然铅靶 ,通过多核子转移反应生成2 0 8Hg核 .辐照铅片放入离线熔化铅靶气相热色谱装置中处理 ,分离并收集汞元素产物 .完成了 4πΔEβγ γ ,γ X(γ)关联事件谱及γ射线时序单谱测量 .建议了 2 1条γ射线 ,以及能量为 1 3 65,1 72 7keV的两条2 0 8Tl新能级的2 0 8Hgβ- 衰变部分γ纲图 .

关键词：衰变纲图能级 γγ关联核结构

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用于快中子探测的裂变电离室实验及模拟结果比较

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原子核物理评论 2019年第4期36卷 471-476页

作者：关远帆杨贺润段利敏张俊伟袁小华贺智勇张雪荧胡荣江鲁辰桂马朋魏向伦李蒙甘再国杨春莉张宏斌陈亮中国科学院近代物理研究所兰州730000 中国科学院大学北京100049 华北水利电力大学郑州450000

本文报道了一种用于快中子测量的裂变电离室的实验及模拟结果对比,该电离室的裂变材料为238U,分别电镀在电离室的阳极和阴极。裂变电离室通常有三种工作模式:脉冲模式、均方电压模式和电流模式,从而在大动态范围内实现中子注量测量。我... 详细信息

本文报道了一种用于快中子测量的裂变电离室的实验及模拟结果对比,该电离室的裂变材料为238U,分别电镀在电离室的阳极和阴极。裂变电离室通常有三种工作模式:脉冲模式、均方电压模式和电流模式,从而在大动态范围内实现中子注量测量。我们利用252Cf中子源对工作在脉冲模式的裂变电离室效率进行了测量,同时为了评估均方电压模式和电流模式,测量了裂变电离室在不同气压下的脉冲幅度,并通过Geant4蒙特卡罗软件对裂变电离室的脉冲幅度进行了模拟。模拟可以解释实验结果,当工作气压是2.64×10^5 Pa时探测效率最高[(4.30±0.7)×10^-7],且裂变碎片能谱清晰,表明裂变电离室可以工作在不同模式下。

关键词：裂变电离室快中子探测探测效率脉冲幅度蒙特卡罗模拟

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A Gas-lled Recoil Separator,SHANS2,at the China Accelerator Facility for Superheavy Elements

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IMP & HIRFL Annual Report 2022年第1期 42-43页

作者： Xu Suyang Zhang Zhiyuan gan zaiguo Huang Minghui Ma Long Wang Jianguo Zhang Mingming Yang Huabin Yang Chunli Zhao Zhen Huang Xinyuan Chen Lixin Wen Xiaojiang Zhou Hao Jia Huan Sheng Lina Wu Jianqiang Peng Xiaolong Hu Qiang Yang Jing Yao Qinggao Qin Yuanshuai Yan Huaihai Chai Zhen Zhang Jianchuan Zhang Yong Du Ze Xie Hongming Zhao Bo Sun Guozhen Wang Fengfeng Yuan Chenzhang Wu Xiaolei Chen Ruofu Zhang Hongbin Lu Ziwei Yang Herun Xu Xinxing Chen Youxin Feng Anhui Sun Peng Xu Junkui He Yuan Sun Liangting Zhou Xiaohong Xu Hushan V.K.Utyonkov A.A.Voinov Yu.S.Tsyganov ANPolyakov DISolovyev Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516029GuangdongChina Guangxi Key Laboratory of Nuclear Physics and Technology Guangxi Normal UniversityGuilin 541004GuangxiChina Joint Institute for Nuclear Research Dubna 141980Russian Federation

Over the past years,experimentalists have launched an expedition to explore the predicted,centered near the double-magic Z=114,N=184 *** their remarkable e orts,elements from hydrogen up to element 118 at *** discovery of the superheavy elements o ers the possibilities to study properties of nuclei under extremely strong Coulomb elds and to explore the limits of existence of *** fusion evaporation reactions induced by low-energy heavy ions are employed for synthesis and study of superheavy isotopes,and the gas-lled recoil separator technique is always used to e ectively separate the produced evaporation residues from projectile-like and target-like products.

关键词： elements residues centered

Production and Identification of New Isotope 265Bh（Z=107）

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IMP & HIRFL Annual Report 2003年 40-40页

作者： Fan Hongmei, Wu Xiaolei, gan zaiguo, Guo Junsheng, Qin Zhi, Lei Xiangguo, Liu HongyeGuo Bin, Xu Huageng, Chen Ruofu, Dong Chengfu, Zhang Fuming, Wang HualciXie Chengying, Feng Zhaoqing, Zhen Yong, Song Litao, Luo PengXu Hushan, Zhou Xiaohong, Jin Genmin and Ren ZhongzhouDepartment of Physics, Nanjing University, Nanjing.

New Isotope 265Bh was produced in bombardment of a 243Am target with 168 MeV 26Mg ions. The experiment was carried out at the Sector Focus Cyclotron of Heavy Ion Research Facility in Lanzhou in 2003. The reaction prod...

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New Short-lived Neutron-de cient Isotope ^(220)Np

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IMP & HIRFL Annual Report 2019年第1期 44-44页

作者： Zhang Zhiyuan gan zaiguo Yang Huabin Ma Long Huang Minghui Yang Chunli Zhang Mingming Tian Yulin Wang Yongsheng Sun Mingdao Lu Hongyang Zhang Wenqiang Zhou Houbin Wang Xiang Wu Chenguang Duan Limin Huang Wenxue Liu Zhong Ren Zhongzhou Zhou Shangui Zhou Xiaohong Xu Hushan Tsyganov Yury Voinov Alexey Polyakov Alexander 不详

Alpha decay,as a pervasive decay mode of unstable heavy nuclei,plays a crucial role in the identification of new superheavy elements and investigation on nuclear structure of exotic nuclei near the proton drip line.

关键词： decay elements structure