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arXiv 2104.04712nucl-th
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单中子晕核碎裂的程函反应理论的详细研究

Detailed Study of the Eikonal Reaction Theory for the breakup of one-neutron halo nuclei

Chloë Hebborn, Pierre Capel

摘要:

背景资料:单中子去除反应被用来研究不稳定核的单粒子结构,特别是奇异晕核。Eikonal反应理论(ERT)是由Yahiro,Ogata和Minomo在Prog. Theor. 126,167(2011),以包括动力学效应,这是在这些反应的通常程函描述失踪。与更精细的反应模型相比,总破碎截面得到了令人鼓舞的结果。目的:我们将这些比较扩展到更多的微分破碎截面,表示为核心和晕中子之间的相对能量或平行动量的函数。方法:将这些截面的ERT预测与最新计算进行比较。结果:验证了ERT所依据的假设,并明确了其有效性范围。演化算子的实际排序{影响ERT微分}截面和特定的选择导致与参考计算的极好一致。在处理中子-靶相互作用中的动力学效应在可观测的平行动量中可能是显著的。结论:不同的相互作用的动力学的分裂反应的单中子晕核的作用得到了更好的理解和改进的ERT的建议。

英文摘要:

Background: One-neutron removal reactions are used to study the single-particle structure of unstable nuclei, and in particular the exotic halo nuclei. The Eikonal Reaction Theory (ERT) has been developed by Yahiro, Ogata and Minomo in Prog. Theor. Phys. 126, 167 (2011) to include dynamical effects, which are missing in the usual eikonal description of these reactions. Encouraging results have been obtained for total breakup cross sections in comparison to more elaborate reaction models. Purpose: We extend these comparisons to more differential breakup cross sections expressed as functions of the relative energy or parallel momentum between the core and halo neutron. Method: ERT predictions of these cross sections are compared to state-of-the-art calculations. Results: The hypotheses upon which the ERT is based are confirmed and their range of validity is made clearer. The actual ordering of the evolution operators {affects ERT differential} cross sections and a specific choice leads to excellent agreement with the reference calculation. Dynamical effects in the treatment of the neutron-target interaction can be significant in the parallel-momentum observable. Conclusions: The role of the different interactions in the dynamics of breakup reactions of one-neutron halo nuclei are better understood and improvements to the ERT are suggested.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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