Chin. Phys. Lett.  2003, Vol. 20 Issue (1): 53-55    DOI:
Original Articles |
Halo Structure of Nucleus 23Al
ZHAO Yao-Lin1;MA Zhong-Yu1,2,3;CHEN Bao-Qiu1,2;SHEN Wen-Qing4,5
1China Institute of Atomic Energy, Beijing 102413 2Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000 3Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080 4Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800 5College of Sciences, Ningbo University, Ningbo 315211
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ZHAO Yao-Lin, MA Zhong-Yu, CHEN Bao-Qiu et al  2003 Chin. Phys. Lett. 20 53-55
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Abstract The recently measured reaction cross section of 23Al is analysed in the Glauber model with an optical limit or few-body approach. It is found that the conventional fixed core-plus-nucleon model for halo nuclei is unable to explain the observed abnormally large reaction cross section of 23Al by any selection of the halo nucleon configurations. The reaction cross section of 23Al can be described when the core size is enlarged, although the Coulomb barrier largely hinders the formation of a halo structure for proton-rich nuclei. This is consistent with the case in s-d shell neutron-rich nuclei, where an enlarged core was proposed to explain both the reaction cross section and longitudinal momentum distribution data.
Keywords: 25.60.Dz      25.70.Mn      27.30.+t     
Published: 01 January 2003
PACS:  25.60.Dz (Interaction and reaction cross sections)  
  25.70.Mn (Projectile and target fragmentation)  
  27.30.+t (20 ≤ A ≤ 38)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2003/V20/I1/053
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