Optical potentials for the rare-isotope beam era
Optical potentials for the rare-isotope beam era
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稀有同位素束时代的光学潜力
DOI：
10.1088/1361-6471/acc348
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Burrows, M.
中科院分区：
文献类型：
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作者：
Hebborn, C.;Nunes, F. M.;Potel, G.;Dickhoff, W. H.;Holt, J. W.;Atkinson, M. C.;Baker, R. B.;Barbieri, C.;Blanchon, G.;Burrows, M.
我们回顾了核子弹性散射和反应截面理论分析中广泛使用的核光学势的最新进展，并提出了进一步发展的必要性。在核图中远离稳定性的区域，这是今后十年核科学的前沿领域，将在世界各地新的稀有同位素束流设施中进行探索，需要有针对性地量化和减少理论反应模型的不确定性，特别是与核光学势有关的不确定性。我们首先描述了改进对涉及短寿命同位素的核反应的描述的主要物理动机，重点是它对基础科学发现和在医学、能源和安全方面的应用的好处。然后，我们概述了今天用来建立光学势能的各种方法，从唯象方法、微观方法和从头算方法开始，特别强调了每种方法的优点和缺点。然后，我们讨论公开可用的工具和资源，促进向从业者传播该领域的最新进展。最后，我们为该领域提供了一系列开放的挑战和建议，以推进稀有同位素束流时代核反应研究的基础科学目标。这篇论文是2022年3月在FRIB举行的稀有同位素束流理论联盟(FRIB-TA)专题计划“核物理中的光学势”的成果。它的内容不是详尽的，是由参与者选择的，反映了他们在光学潜力方面的努力。
We review recent progress and motivate the need for further developments in nuclear optical potentials that are widely used in the theoretical analysis of nucleon elastic scattering and reaction cross sections. In regions of the nuclear chart away from stability, which represent a frontier in nuclear science over the coming decade and which will be probed at new rare-isotope beam facilities worldwide, there is a targeted need to quantify and reduce theoretical reaction model uncertainties, especially with respect to nuclear optical potentials. We first describe the primary physics motivations for an improved description of nuclear reactions involving short-lived isotopes, focusing on its benefits for fundamental science discoveries and applications to medicine, energy, and security. We then outline the various methods in use today to build optical potentials starting from phenomenological, microscopic, and ab initio methods, highlighting in particular, the strengths and weaknesses of each approach. We then discuss publicly-available tools and resources facilitating the propagation of recent progresses in the field to practitioners. Finally, we provide a set of open challenges and recommendations for the field to advance the fundamental science goals of nuclear reaction studies in the rare-isotope beam era. This paper is the outcome of the Facility for Rare Isotope Beams Theory Alliance (FRIB-TA) topical program'Optical Potentials in Nuclear Physics' held in March 2022 at FRIB. Its content is non-exhaustive, was chosen by the participants and reflects their efforts related to optical potentials.