Chinese Physics C > 2006, Vol. 30 > Issue(11): 1058-1061

Exotic Behavior of Elastic Scattering Differential Cross-Sections of Weakly Bound Nucleus¹⁷F at Small Angles

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China3 Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator of Lanzhou, Lanzhou 730000, China4 Department of Physics, Nanjing University, Nanjing 210008, China5 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China6 Centro de Ciencias F\'{\i}sicas, National University of Mexico UNAM, Cuernavaca, Mexico7 Center for Nonlinear Physics, RSPhysSE, The Australian National University, Canberra ACT 0200, Australia

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The differential cross-sections for elastic scattering of ¹⁷F and ¹⁷O on ²⁰⁸Pb have been measured at Radioactive Ion Beam Line at Lanzhou (RIBLL). The variation of the logarithms of differential cross-sections with the square of scattering angles shows clearly that there exists a turning point in the range of small scattering angles (6°—20°) for ¹⁷F having exotic structure, while no turning point was observed in the ¹⁷O elastic scattering. The experimental results have been compared with previous data. Systematical analysis on the available data seems to conclude that there is an exotic behavior of elastic scattering differential cross-sections of weakly bound nuclei with halo or skin structure as compared with that of the ordinary nuclei near stable line. Therefore the fact that the turning point of the logarithms of differential cross-sections appears at small angle for weakly bound nuclei could be used as a new probe to investigate the halo and skin phenomenon.

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HAN Jian-Long, WANG Qi, XIAO Zhi-Gang, XU Hu-Shan, SUN Zhi-Yu, HU Zheng-Guo, ZHANG Xue-Yin, WANG Hong-Wei, MAO Rui-Shi, YUAN Xiao-Hua, XU Zhi-Guo, ZHAO Tie-Cheng, Exotic Behavior of Elastic Scattering Differential Cross-Sections of Weakly Bound Nucleus ¹⁷F at Small Angles[J]. Chinese Physics C, 2006, 30(11): 1058-1061.

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Received: 2006-02-19
Revised: 2006-05-25

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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Exotic Behavior of Elastic Scattering Differential Cross-Sections of Weakly Bound Nucleus¹⁷F at Small Angles

Corresponding author:WANG Qi,

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China3 Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator of Lanzhou, Lanzhou 730000, China4 Department of Physics, Nanjing University, Nanjing 210008, China5 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China6 Centro de Ciencias F\'{\i}sicas, National University of Mexico UNAM, Cuernavaca, Mexico7 Center for Nonlinear Physics, RSPhysSE, The Australian National University, Canberra ACT 0200, Australia

Received Date:2006-02-19

Accepted Date:2006-05-25

Available Online:2006-11-05

Abstract:The differential cross-sections for elastic scattering of¹⁷F and¹⁷O on²⁰⁸Pb have been measured at Radioactive Ion Beam Line at Lanzhou (RIBLL). The variation of the logarithms of differential cross-sections with the square of scattering angles shows clearly that there exists a turning point in the range of small scattering angles (6°—20°) for¹⁷F having exotic structure, while no turning point was observed in the¹⁷O elastic scattering. The experimental results have been compared with previous data. Systematical analysis on the available data seems to conclude that there is an exotic behavior of elastic scattering differential cross-sections of weakly bound nuclei with halo or skin structure as compared with that of the ordinary nuclei near stable line. Therefore the fact that the turning point of the logarithms of differential cross-sections appears at small angle for weakly bound nuclei could be used as a new probe to investigate the halo and skin phenomenon.

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Exotic Behavior of Elastic Scattering Differential Cross-Sections of Weakly Bound Nucleus¹⁷F at Small Angles

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