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Radioactive ion beam line in Lanzhou
Authors:Wenlong Zhan  Zhongyan Guo  Guanhua Liu  Jianrong Dang  Ruirong He  Sixin Zhou  Quanmin Yin  Yixiao Luo  Yifang Wang  Baowen Wei  Zhiyu Sun  Guoqing Xiao  Jinchuan Wang  Shanhong Jiang  Jiaxing Li  Xiangwei Meng  Wansheng Zhang  Lijun Qing  Quanjin Wang
Institution:(1) Institute of Modern Physics, Chinese Academy of Sciences, 730000 Lanzhou, China
Abstract:Radioactive ion beam line in Lanzhou (RIBLL) has been constructed for the production of short-lived radioactive nuclei and studies of exotic nuclei far from the β-stability line. It has been put into operation recently at the National Laboratory of Heavy Ion Accelerator Lanzhou. RIBLL consists of two doubly achromatic parts with a solid acceptance ΔΩ⩾6.5 msr, momentum acceptance Δp/p=±5% and maximum magnetic rigidityBp max=4.2 Tm. The second part of RIBLL serving as a spectrometer gives an element resolutionZ/ΔZ>150 and mass resolutionA/ΔA>300. The polarized secondary beams can be obtained by using a swinger dipole magnet to change the incident direction of primary projectile from 0° to 5°. The shortest lift time for secondary beams on RIBLL is less than 1 μs. First experiments were performed with neutron rich nuclei for understanding the properties of halo nuclei and exotic nuclear reactions. Project supported by the Chinese Academy of Sciences, the State Science and Technology Commission of China, the National Natural Science Foundation of China (Grant No. 19675055).
Keywords:radioactive ion beam line in Lanzhou  radioactive nuclear beams  projectile fragmentation
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