Elastic scattering of the proton drip-line nucleus 8 B off a nat Pb target at 170.3 MeV-猫眼课题宝

DOI：

10.1103/physrevc.87.044613

发表时间：

2013-04

期刊：

Physical Review C

影响因子：

3.1

通讯作者：

中科院分区：

物理与天体物理2区

文献类型：

作者：

Y. Yang;Jun Wang;Q. Wang;D. Pang;J. Ma;M. Huang;J. Han;P. Ma;S. Jin;Z. Bai;Q. Hu;L. Jin;J. Chen;N. Keeley;K. Rusek;R. Wada;S. Mukherjee;Z. Sun;R. F. Chen;X. Zhang;Z. Hu;X. Yuan;X. Cao;Z. Xu;S. W. Xu;C. Zhen;Z. Chen;Z. Chen;S. Z. Chen;C. Du;L. Duan;F. Fu;B. Gou;J. Hu;J. He;X. Lei;S. Li;Yingrui Li;Q. Lin;L. X. Liu;F. Shi;S. Tang;G. Xu;X. Xu;L. Zhang;X. Zhang;W. Zhang;Minggang Zhao;Z. Guo;Y. Zhang;H. Xu;G. Xiao

在入射能量为170.3 MeV时，测量了Pb-nat靶对B-8的弹性散射。特别注意的是有限的强度和宽轮廓的二次梁。测量的微分截面角分布表明，在该系统中，库仑核干涉峰（CNIP）没有被抑制，这与重靶在库仑势垒附近的能量散射中子晕核时所观察到的情况相反。采用单折叠型势的光学模型和考虑了断裂-通道耦合到弹性散射的连续介质离散耦合通道（CDCC）方法对角分布进行了分析。微分截面的整体模式是由CDCC计算很好地再现。计算结果表明，在这种情况下，破碎-通道耦合对弹性散射的影响很小。

The elastic scattering of B-8 by a Pb-nat target was measured at an incident energy of 170.3 MeV. Special care was taken with the limited intensity and broad profile of the secondary beam. The measured angular distribution of the differential cross section shows that the Coulomb-nuclear interference peak (CNIP) is not suppressed in this system, in contrast to what was observed in the scattering of neutron halo nuclei by heavy targets at energies around the Coulomb barrier. Analyses of the angular distribution were performed both in terms of the optical model using a single-folding-type potential and the continuum discretized coupled-channels (CDCC) method, which explicitly takes into account the breakup-channel couplings to the elastic scattering. The overall pattern of the differential cross section is well reproduced by the CDCC calculations. The calculations show that the effect of breakup-channel couplings on the elastic scattering is small in the present case.

Elastic scattering of the proton drip-line nucleus 8 B off a nat Pb target at 170.3 MeV

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