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A proposed direct measurement of cross section at Gamow window for key reaction 19F(p,α) 16O in Asymptotic Giant Branch stars with a planned accelerator in CJPL

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Science China(Physics,Mechanics & Astronomy) 2016年第5期59卷 76-82页

作者： jianJun He ShiWei Xu ShaoBo Ma Jun Hu LiYong Zhang ChangBo Fu NingTao Zhang Gang Lian Jun Su YunJu Li ShengQuan Yan YangPing Shen SuQing Hou baolu jia Tao Zhang XiaoPeng Zhang Bing Guo Shigeru Kubono WeiPing Liu Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China University of Chinese Academy of Sciences Beijing 100049 China Department of Physics Shanghai Jiao Tong University Shanghai 200240 China China Institute of Atomic Energy P. O. Box 275(10) Beijing 102413 China RIKEN Nishina Center 2-1 Hirosawa Wako Saitama 351-0198 Japan

In 2014, the National Natural Science Foundation of China （NSFC） approved the Jinping Underground Nuclear Astrophysics laboratory （JUNA） project, which aims at direct cross-section measurements of four key stellar nuclear reactions right down to the Gamow windows. In order to solve the observed fluorine overabundances in Asymptotic Giant Branch （AGB） stars, measuring the key 19F（p,a）16O reaction at effective burning energies （i.e., at Gamow window） is established as one of the scientific research sub-projects. The present paper describes this sub-project in details, including motivation, status, experimental setup, yield and background estimation, aboveground test, as well as other relevant reactions.

关键词： Jinping Underground Nuclear Astrophysics laboratory (JUNA) direct measurement Gamow window cross section AGBstar nucleosynthesis

2-8 Measurement of 11B(p,r)12 C Astrophysical S Factors at Low Energies

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IMP & HIRFL Annual Report 2015年第1期 61-62页

作者： He jianjun Xu Shiwei jia baolu Chen Size Ma Shaobo Hou Suqing Hu Jun Zhang Liyong Yu Xiangqing 不详

Theoretical models of stellar evolution predict negligible quantities of 6Li, 9Be, and 11B in the hydrogen burning phases of a star’s evolution[1]. The primordial Big-Bang nucleosynthesis (BBN) model might be more generous in its production of these elements[2]. The radiative-capture cross section for proton capture on 11B leading to 12C is small at astrophysically interesting energies because of the large Coulomb barrier.

关键词： Factors Low Energies

2- 14 Calculation of Neutron-induced 232Th Fission Cross Section with TALYS

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IMP & HIRFL Annual Report 2013年第1期 51-52页

作者： Zhang Suyalatu Chen Zhiqiang Jin Zengxue Han Rui Liu Xingquan Lin Weiping Liu jianli Shi Fudong Ren Peipei jia baolu

2 - 13 Benchmarking of Evaluated Neutron Data for Gallium Sample

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IMP & HIRFL Annual Report 2013年第1期 50-51页

作者： Han Rui Chen Zhiqiang Zhang Suyalatu Liu Xingquan Lin Weiping Jin Zengxue Ren Peipei jia baolu Liu jianli Shi Fudong

2- 30 Isotope Yields Ratio Temperatures

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IMP & HIRFL Annual Report 2012年第1期 70-71页

作者： Lin Weiping Liu Xingquang Huang Meirong Zhang Suyalatu Han Rui Liu jianli Shi Fudong Jin Zengxue Ren Peipei jia baolu Chen Zhiqiang Roy Wada

2-25 Interpretation on the Mass Dependent Behavior of Transverse Flow Using Collective-thermal Competition (Percolation) Model

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IMP & HIRFL Annual Report 2014年第1期 63-64页

作者： Liu Xingquan Wada Roy Chen Zhiqiang Huang Meirong Lin Weiping Ren Peipei Zhang Suyalatu Jin Zengxue jia baolu Han Rui Liu jianli Shi Fudong 不详

According to the interplay model proposed in Ref. [1], an improved model, Collective-thermal Competition(Percolation) Model (CTCPM) is developed. The improvements are made by adding the momentum conservationinto the interplay of the thermal motion and the collective motion and limiting the emitting system to be *** a nuclear system at a thermal equilibrium, the momentum of the thermal motion distributes isotropically in x,y, z directions (z is the beam direction) and make no effect on the flow (Px) in average.

关键词： Mass Dependent Behavior

5 - 16 Simulation of Neutron Efficiency for Liquid Scintillator Detector

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IMP & HIRFL Annual Report 2012年第1期 235-236页

作者： Lin Weiping Liu Xingquan Zhang Suyalatu Huang Meirong Liu jianli Shi Fudong Han Rui Jin Zengxue Ren Peipei jia baolu Chen Zhiqiang R. Wada

2-26 Effect on Transverse Flow Definition from Different Reaction Mechanisms in AMD and CoMD — Semi-transparency

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IMP & HIRFL Annual Report 2014年第1期 65-66页

作者： Liu Xingquan Wada Roy Chen Zhiqiang Huang Meirong Lin Weiping Ren Peipei Zhang Suyalatu Jin Zengxue jia baolu Han Rui Liu jianli Shi Fudong 不详

In general, the definition of the transverse flow can be classified into the slope flow[1] and the average flow[2]in the certain mid-rapidity region. For a given type of isotope with mass number A, these two definitio... 详细信息

关键词： Transverse Flow Definition

2- 27 Primary Fragments Reconstruction

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IMP & HIRFL Annual Report 2012年第1期 66-67页

作者： Lin Weiping Liu Xingquan Zhang Suyalatu Huang Meirong Liu jianli Shi Fudong Han Rui Jin Zengxue Ren Peipei jia baolu Zhao Minghui Chen Zhiqiang R. Wada