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变形、晕圈和气泡结构:轻到中等质量原子核中奇异现象的范式转变

Deformation, halo, and bubble structure: A paradigm shift of exotic phenomena in light to medium mass nuclei

R. Barman, R. Chatterjee, W. Horiuchi, M. Kimura, G. Singh, Jagjit Singh, Shubhchintak

arXiv 2607.21730首次发表:更新:

AI 中文总结

研究轻到中等质量原子核中奇异现象,结合微观结构计算与反应理论,用有限范围扭曲波玻恩近似计算可观测量,应用于反转岛原子核,揭示相关特性,探讨对天体物理反应率的影响,统一核结构与反应,凸显滴线的重要性。

AI 中文摘要

奇异核结构的出现,如变形、单中子和双中子晕圈以及气泡构型,标志着我们对远离稳定态的轻到中等质量原子核理解的范式转变,特别是在跨越N = 20 - 28的反转岛附近及内部。本文综述将微观结构计算与反应理论相结合,突出用全量子力学有限范围扭曲波玻恩近似计算可观测量。通过多种可观测量精确探测核密度分布,应用于反转岛的多个原子核,揭示了晕圈扩展增强等,挑战传统壳模型范式,还探讨了对天体物理反应率的敏感性,此统一方法有重要意义。

英文摘要

The emergence of exotic nuclear structures, such as deformation, one- and two-neutron halos, and bubble configurations, marks a paradigm shift in our understanding of light- to medium-mass nuclei far from stability, particularly near and within the island of inversion extending across $N=20-28$. In this review, we integrate microscopic structure calculations using the antisymmetrized molecular dynamics method with reaction theories such as the Glauber model for high-energy collisions, and highlight the use of the fully quantum mechanical finite-range distorted wave Born approximation for calculating both inclusive and exclusive Coulomb breakup observables for these medium mass systems. These theoretical frameworks enable precise probing of nuclear density profiles through observables such as total reaction cross sections, neutron removal cross sections, relative energy spectra, parallel momentum distributions, and angular distributions. Applications to several nuclei in the island of inversion reveal enhanced halo extensions, neutron-neutron correlations in Borromean nuclei, and central density depletions in bubbles, challenging traditional shell-model paradigms. Furthermore, the sensitivity of astrophysical reaction rates to these exotic inputs is explored, demonstrating their role in the refinement of r-process nucleosynthesis models and elemental abundance predictions. This unified approach not only bridges nuclear structure and reactions, but also highlights the driplines as frontiers for unraveling nuclear matter under extreme conditions, with implications for rare-isotope beam experiments and beyond.

CommentsReview article, accepted for publication in "Progress in Particle and Nuclear Physics"

DOI:10.1016/j.ppnp.2026.104262

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