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2-15 Research Progress of Heavy Ion Reaction Group

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IMP & HIRFL Annual Report 2015年第1期 69-70页

作者： Wang Jiansong Yang Yanyun ma Peng Jin Shilun ma junbing Liu Xingquan Bai Zhen ma Weihu Wang Qi Hu Qiang Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China University of Chinese Academy of Sciences Beijing 100049 China

Alignment of RIBLL1 is adjusted and the control system of the power supply of the magnets of RIBLL1 is upgraded in 2015. 8 experiments, more than 1 000 h beams, have been carried out at the Radioactive Ion Beam Line in Lanzhou (RIBLL1) in 2015. many research topics are included, such as the mechanism study of -delayed di-proton decay and the correlation measurement of emitted two protons for 22Si and 23Si, elastic scattering of 17F, the study of molecular state of 20O, Coulomb excitation of 37S and decay of 37P, study of the effects of dynamic polarization in low energy reaction induced by the proton-rich exotic nuclei, decay of proton-rich fp shell nuclei with mass around 50.

关键词： Heavy Ion Reaction

5 - 19 Application of A AE-E Telescope in Radioactive Beam Experiment

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IMP & HIRFL Annual Report 2013年第1期 220-221页

作者： Jin Shilun Wang Jiansong Yang Yanyun Wang Qi Huang Meirong ma Peng ma junbing Li Yong Zhao Minghui

Research Progress of Heavy Ion Reaction Group in 2018

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IMP & HIRFL Annual Report 2018年第1期 39-40页

作者： Wang Jiansong Yang Yanyun ma Peng ma junbing Liu Xingquan Bai Zhen Hu Qiang Jin Shilun Yu Gongming DPatel Duan Fangfang Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Lanzhou University Chongqing 400715China

Heavy Ion Reaction Group is in charge of the operation and maintenance of the 1st Radioactive Ion Beam Line in Lanzhou(RIBLL1).Their research works are focused on the direct reactions induced by radioactive ion beams,nuclear reaction dynamics at Fermi energy and some international *** progress achieved in 2018 are as the following.

关键词： Fermi collaboration maintenance

5 - 18 Development of A High-performance Charged Particle Detector Module

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IMP & HIRFL Annual Report 2013年第1期 219-220页

作者： Li Yong Jin Shilun Wang Jiansong Yang Yanyun Huang Meirong ma Peng ma junbing Zhao Minghui Bai Zhen Zhou Yuanjie ma Weihu Wang Qi

Experimental Measurement of Elastic and Breakup Channels for the ^(11)Be+^(208)Pb System at above the Coulomb Barrier

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IMP & HIRFL Annual Report 2017年第1期 42-43页

作者： Yang Yanyun Wang Jiansong Liu Xingquan Duan Fangfang Gao Zhihao DPatel ma Peng ma junbing Bai Zhen Hu Qiang Yu Yuechao Yu Gongming ma Weihu 不详

Our previous experimental result for proton-rich nucleus ^(8)B at above the Coulomb barrier shows that in spite of its low proton separation energy(0.136 MeV)there is no strong breakup coupling effects[1].The fact is in contrast to the observation of neutron-rich nuclei ^(11)Be around the Coulomb barrier.A systematic study for elastic scattering cross sections of neutron-rich nucleus ^(11)Be and the proton-halo nucleus ^(8)B at low and higher energies shows that the Coulomb rainbow in the elastic scattering of ^(11)Be is still strongly suppressed at high energies[2].In order to examine the predictions,experimental measurements for 11Be elastic scattering and breakup for ^(11)Be+^(208)Pb system at 141 and 209 MeV were performed at the National Laboratory of Heavy Ion Research of the Institute of Modern Physics,Lanzhou,China.

关键词： Elastic separation system

A Newly Developed Silicon Detector Array for Radioactive Beam Experiments at HIRFL-RIBLL

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IMP & HIRFL Annual Report 2017年第1期 44-45页

作者： Duan Fangfang Yang Yanyun Gao Zhihao Liu Xingquan ma Peng Wang Jiansong Bai Zhen ma junbing Hu Qiang Jin Shilun Jin Shuya Yu Gongming 不详

With the development of radioactive beam facilities,several exciting results were provided concerning the understanding of fundamental nuclear ***,typical-beam intensities are always low and the production is often in very small quantities,so,new generation detectors need to be developed with large solid angle and angular coverage,which can identify particle effectively as well as possesses high energy resolution,high spatial resolution and high geometric *** new detector based on Double Side Silicon Strip Detector(DSSD)is foreseen for the study of the reaction production in the experiment of direct nuclear reaction above the Coulomb barrier using RIBLL[1,2]at the HIRFL[3,4].However,the disadvantage of the RIBs is that it has a broad distribution in coordinate ***,new detector system with high resolution and a large solid angle was developed successfully for performing nuclear reaction experiments using *** geometric efficiency of the new detector array with 5 large area DSSD telescopes increases up to 70%.

关键词： resolution disadvantage beam

2-27 Experimental Measurement of 7Be,8B and 9C on natPb Elastic Scattering Above the Coulomb Barriers

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IMP & HIRFL Annual Report 2016年第1期 64-65页

作者： Yang Yanyun Liu Xingquan Wang Jiansong Duan Fangfang ma Peng ma junbing Jin Shilun Bai Zhen Gao Zhihao Hu Qiang ma Weihu Yu Yuechao Yu Gongming 不详

The experiment was performed at the National Laboratory of Heavy Ion Research of the Institute of Modern Physics,Lanzhou,*** secondary beams of radioactive isotopes were produced by the fragmentation of the 12C6+primary on a 9Be target with a thickness of 2 652 m[1;2].The secondary beams,7Be,8B and 9C beams were delivered by the Radioactive Ion Beam Line in Lanzhou(RIBLL)[3,4]and impinged on a natPb target at RIBLL *** energies of the secondary beams,at the physical target,were about three times the Coulomb barriers,130 MeV for 7Be,178 MeV for 8B and 227 MeV for 9C,respectively.

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Experimental Study of the Elastic Scattering and Breakup Reactions of Proton Drip-line Nucleus^(8)B on^(208)Pb at energies around Four Times of Coulomb Barrier

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IMP & HIRFL Annual Report 2019年第1期 55-56页

作者： Wang Kang Yang Yanyun Duan Fangfang Pang Danyang Wang Jiansong Gao Zhihao ma Peng Xu Shiwei Liu Xingquan ma junbing Bai Zhen Hu Qiang Jin Shuya Sun Zhiyu 不详

First measurement of the angular distribution of breakup reaction for^(8)B on a^(208)Pb target at an energy around four times of Coulomb barrier was carried out at the National Laboratory of Heavy Ion Research of Inst... 详细信息

关键词： Elastic angular Scattering

2-24 Research Progress of Heavy Ion Reaction Group

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IMP & HIRFL Annual Report 2016年第1期 60-61页

作者： Wang Jiansong Yang Yanyun ma Peng Jin Shilun ma junbing Liu Xingquan Bai Zhen ma Weihu Wang Qi Hu Qiang Yu Gongming D.Patel Gao Zhihao Duan Fangfang Zhang Xing Jiao Lei Yu Yuechao Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Southwest University Chongqing 400715China Chongqing University Chongqing 400044China Yunnan University Kunming 650091China

In 2016,the environment of the power supply of RIBLL1 is improved by building a closed space with air *** will be good for the magnetic stability which is directly affected by the stability of the power *** are 9 experiments,more than 1 165.5 h beam-time,carried out at the *** users are from Peking University,China Institute of Atomic Energy,Shanghai Institute of Applied Physics,National Space Science Center,Institute of High Energy Physics and Institute of Modern Physics.

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