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  次级束物理组始建于1997年,因建造兰州第一条放射性次级束流线RIBLL1以及利用此装置开展不稳定核物理研究而得名。随着兰州重离子加速器冷却存储环CSR的建成并投入使用,次级束物理组的研究工作有了较大的拓展。目前,研究组的主要工作是基于兰州第二条放射性次级束流线RIBBL2和外靶实验终端等装置,开展次级束物理、重离子碰撞核反应机制、核物质状态方程、探测器和大型探测器装置等方面的研究和研制工作。

  目前,次级束物理组拥有研究人员约12名,科研项目主要来源于中国科学院和国家自然科学基金委的支持。自建组以来,经全组老师和同学的共同努力,作出了很多具有创新特色的研究工作,在国内外重要期刊发表了多篇优秀的学术论文。

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  Radioactive Ion Beams (RIBs)

  The properties of isotopes far from the stability line have been one of the hot research fields in nuclear physics and astrophysics. As an important tool for promoting these researches, the radioactive ion beam facilities, RIBLL2 and ETF, have been established in HIRFL-CSR. By projectile fragmentation or fission reactions of the beams provided by CSRm with a kinetic energy of several hundred MeV to GeV, RIBs can be produced for studying the properties of exotic nuclei.

  Nuclear Matter Equation of State

  The Cooling Storage Ring (CSR) at Lanzhou, China is a heavy-ion facility that can accelerate nuclei up to 238U with a kinetic projectile energy of several hundred MeV to GeV. By utilizing the CSR heavy-ion beam on an external target, dense QCD matter can be created. The equation of state (EoS) of the strongly coupled matter can be studied via properly chosen physical observables, among which the π-/π+ production ratio probes the symmetry energy, Esym(r), of the asymmetrical nuclear matter at high densities. An External Target Experiment is currently proposed for this study based on first-stage simulation and experimental work. To provide precise measurements and solid constraint to theory and models, experiment design and systematic requirements must be carefully studied.

  3. DArk Matter Particle Exploration (DAMPE)

  In astronomy and cosmology, dark matter is a currently unknown type of matter hypothesized to account for a large part of the total mass in the universe. Dark matter neither emits nor absorbs light or other electromagnetic radiation, and so cannot be directly seen with telescopes.   

  Dark matter came to the attention of astrophysicists due to discrepancies between the mass of large astronomical objects determined from their gravitational effects, and mass calculated from the "luminous matter" they contain. It was first postulated by Jan Oort in 1932 and Fritz Zwicky in 1933.

  2013年
 

1. X.H. Zhang. Modified EPAX2 parameterization for estimating the fragment cross sections at intermediate energies. Nuclear Physics A Vol. 915, 59 (2013). 

2. K. Yue, Z.Y. Sun , S.T. Wang, W.X. Huang, J.L. Chen, S.L. Li, J. Kong, Y. Qian, H.Y. Zhao, H. Su, H.S. Xu, Y.H. Yu, D. Yan, X.H. Zhang, Y. Zhou. A CsI (Tl) gamma detection array at the external target hall of CSRm. Nucl. Instr. Meth. Phys. Res., Sect. B, In Press. 

3. Liu Longxiang, Sun Zhiyu, Yue Ke, Xiao Guoqing, Chen Ximeng, Yu Yuhong, Zhang Xueheng, Wang Shitao, Tang Shuwen, Zhou Yong, Yan Duo, Fang Fang. The response of the neutron wall for the detection of two neutrons in three-body Borromean halo nuclei breakup reaction by simulation. Chinese Physics C. In Press. 

4. Liu Longxiang, Sun Zhiyu, Xiao Guoqing, Chen Ximeng, Yu Yuhong, Zhang Xueheng, Wang Shitao, Tang Shuwen, Zhou Yong, Yan Duo. Study of the data analysis process of the neutron wall with simulation. Chinese Physics C Vol.37,096201 (2013). 

5. Tang Shuwen, Ma Peng, Duan Limin, Sun Zhiyu, Lu Chengui, Yang Herun, Hu Rongjiang, Huang Wenxue, Xu Hushan. A normal-pressure MWPC for beam diagnostics at RIBLL2. Chinese Physics C Vol.37,066002 (2013).

6. Zhang Xuehengm, Yu Yuhong, Sun Zhiyu, Mao Ruishi, Wang Shitao, Zhou Yong,Yan Duo, Liu Longxiang. A time-of-flight system for the external target facility. Chinese Physics C Vol.37,056002 (2013). 

  2012年
 

1. X. H. Zhang, Z. Y. Sun, R. F. Chen et al. Projectile fragmentation reaction of 40Ar at 57 MeV/nucleon. Physical Review C 85, 024621 (2012). 

2. K. YueS. Bagchi, S. Diebold, et al. Feasibility Studies for the EXL Project at FAIR. Proceedings of Science, 8th International Conference on Nuclear Physics at Storage Rings (STORI11), Pos (STORI11) 014. 

3. 唐述文,段利敏,孙志宇等. 一种用于RIBLL2的纵向场多次取样型电离室. 原子核物理评论. 2012, 29(1): 72-76  

  2011年
 

1.YUE Ke, XU Hu-Shan, SUN Zhi-Yu, SU Guang-Hui, WANG Jian-Song, ZHENG Chuan, LI Song-Lin, HU Zheng-Guo, CHEN Rou-Fu, XIAO Zhi-Gang, HU Qiang, ZHANG Xue-Ying, YU Yu-Hong, CHEN Jun-Ling. Design studies on the 4π γ-ray calorimeter for the ETF experiment at HIRFL-CSR. Chinese Physics C Vol.35,67 (2011) 

 
孙志宇        研究员、组长
郭忠言        研究员、返聘
余玉洪        副研究员、职工
岳珂            副研究员、职工
章学恒        副研究员、职工
陈金达        助理研究员、职工
王世陶        助理研究员、职工
唐述文        助理研究员、职工
刘龙祥        助理研究员、职工
方芳            研究实习员、职工
闫铎             研究实习员、职工
周勇            研究实习员、职工
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