8He+4He 散射和共振行为的耦合通道分析

IF 5.4 3区材料科学 Q2 CHEMISTRY, PHYSICAL

ACS Applied Energy Materials Pub Date : 2024-08-12 DOI:10.1016/j.physletb.2024.138955

Y. Kucuk , N. Keeley , M. Freer , I. Boztosun

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引用次数: 0

摘要

利用耦合反应通道（CRC）形式分析了之前测量到的从4He靶散射的8He的弹性散射和双中子转移角分布[Phys Lett. B 75, 58-62，2017]，并考察了1、2和4中子转移对弹性散射和6He + 6He通道的影响。CRC 计算发现，1n 和 2n 转移是产生 6He 的主要过程，而 4He 核心之间的 4n 转移对弹性散射的影响很小。根据对两组数据的拟合计算出的激发函数表明，类似共振的行为集中在 12Be 激发能量约 13 MeV 和 14-16 MeV 处，两者都与 L=2 和 4 偏波有关，并与中间 12Be 系统的分子结构相一致。

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Coupled channels analysis of 8He+4He scattering and resonant behaviour

Previously measured elastic scattering and two-neutron transfer angular distributions for ⁸He scattered from a ⁴He target [Phys Lett. B 75, 58-62, 2017] are analysed using the coupled reaction channels (CRC) formalism and the effect of 1, 2 and 4-neutron transfers on both the elastic scattering and ⁶He + ⁶He channels is examined. The CRC calculations find that 1n and 2n transfers are the dominant processes in the production of ⁶He while the influence on the elastic scattering of 4n transfer between the ⁴He cores is small. Calculated excitation functions based on fits to both data sets suggest resonant-like behaviour centred at ¹²Be excitation energies of about 13 MeV and 14-16 MeV, both associated with the $L = 2$ and 4 partial waves and consistent with molecular structures in the intermediate ¹²Be system.

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来源期刊

ACS Applied Energy Materials Materials Science-Materials Chemistry

CiteScore

10.30

自引率

6.20%

发文量

1368

期刊介绍： ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.