Threshold anomalies in 9Be + 12C

IF 1.7 4区物理与天体物理 Q2 PHYSICS, NUCLEAR

Nuclear Physics A Pub Date : 2023-11-10 DOI:10.1016/j.nuclphysa.2023.122793

F. Torabi , E.F. Aguilera , B.V. Carlson

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引用次数: 0

Abstract

The extended optical model is used to simultaneously analyze the elastic scattering and fusion data for the weakly-bound system of ⁹Be + ¹²C in the low-energy region. Dynamic polarization potentials $U_{F}$ , $U_{D}$ , associated with fusion and direct couplings, respectively, are introduced. Corresponding fitting parameters leading to dispersive potentials are found, which provide good simultaneous descriptions of elastic and fusion data. The energy-dependent behavior of the polarization potentials establishes a striking difference with respect to that observed for weakly bound projectiles, including ⁹Be, on medium- and heavy-mass targets. Contrary to similar analyses made on weakly-bound systems, the real part of $U_{D}$ is found to be attractive in the present case. The observed behavior is discussed.

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9Be + 12C阈值异常

利用扩展光学模型对9Be + 12C弱束缚体系在低能区的弹性散射和融合数据进行了同步分析。介绍了动态极化电位UF和UD，分别与聚变和直接耦合有关。找到了相应的拟合参数，可以很好地同时描述弹性和融合数据的色散势。极化势的能量依赖行为与观测到的弱束缚弹(包括9Be)在中、重质量目标上的极化势有显著差异。与对弱界系统所作的类似分析相反，在本例中发现UD的实部是吸引的。对观察到的行为进行了讨论。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Physics A 物理-物理：核物理

CiteScore

3.60

自引率

7.10%

发文量

113

审稿时长

61 days

期刊介绍： Nuclear Physics A focuses on the domain of nuclear and hadronic physics and includes the following subsections: Nuclear Structure and Dynamics; Intermediate and High Energy Heavy Ion Physics; Hadronic Physics; Electromagnetic and Weak Interactions; Nuclear Astrophysics. The emphasis is on original research papers. A number of carefully selected and reviewed conference proceedings are published as an integral part of the journal.