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Insight into the radial sensitivity of phenomenological nucleus-nucleus interaction potentials

机译：洞察现象学核 - 核相互作用电位的径向敏感性

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摘要

The optical model potential, which reflects an overall feature of the nuclear property and reaction dynamics, has been widely adopted to describe the nucleus-nucleus interaction phenomenologically. Experimentally, knowledge of the optical potential can only be learned in the vicinity of a sensitive radius. In this study, the notch technique was applied to extract the radial sensitive regions of the tightly bound system O-16 + (208)pb and weakly bound systems Be-9 + Pb-208 and He-6 + Bi-209 at energies around the Coulomb barrier. It is the first time that we observed two distinct sensitive regions, corresponding to the inner volume absorption and the outer surface absorption processes. Strong energy dependence of the sensitive regions was found as well. Based on this result, we further investigated the interaction property of Be-9 + Pb-208 and found that the threshold anomaly was observed in the volume interaction, whereas the abnormal near-threshold behavior was presented in the surface part.
机译：反映核属性和反应动力学的整体特征的光学模型电位已被广泛采用以描述核 - 核相互作用。在实验上，可以在敏感半径附近学习光学电位的知识。在该研究中，应用凹口技术以提取紧密束缚的系统O-16 +（208）Pb的径向敏感区域和弱束缚的系统在它们周围的能量下为-9 + PB-208和He-6 + Bi-209库仑屏障。我们第一次观察到两个不同的敏感区域，对应于内部容积吸收和外表面吸收过程。还发现了敏感区域的强能量依赖性。基于该结果，我们进一步研究了Be-9 + Pb-208的相互作用性能，发现在体积相互作用中观察到阈值异常，而异常接近阈值行为在表面部分中呈现。

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  • 来源
    《Physical review, C》 |2020年第5期|共4页
  • 作者

    Yang L.; Lin C. J.; Jia H. M.; Wang D. X.; Wen P. W.; Yang F.; Zhong E. P.; Zhong S. H.; Luo T. P.;

  • 作者单位

    China Inst Atom Energy POB 275 10 Beijing 102413 Peoples R China;

    China Inst Atom Energy POB 275 10 Beijing 102413 Peoples R China;

    China Inst Atom Energy POB 275 10 Beijing 102413 Peoples R China;

    China Inst Atom Energy POB 275 10 Beijing 102413 Peoples R China;

    China Inst Atom Energy POB 275 10 Beijing 102413 Peoples R China;

    China Inst Atom Energy POB 275 10 Beijing 102413 Peoples R China;

    China Inst Atom Energy POB 275 10 Beijing 102413 Peoples R China;

    China Inst Atom Energy POB 275 10 Beijing 102413 Peoples R China;

    China Inst Atom Energy POB 275 10 Beijing 102413 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 原子核物理学、高能物理学;
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