Asymptotic normalization coefficients for 11B + p → 12C from the 11B(10B, 9Be)12C reaction and the 11B(p, γ)12C astrophysical S-factor

IF 4.4 2区物理与天体物理 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Results in Physics Pub Date : 2024-11-20 DOI:10.1016/j.rinp.2024.108050

S.K. Sakhiyev , S.V. Artemov , N. Burtebayev , S.B. Sakuta , S.B. Igamov , Maulen Nassurlla , K. Rusek , M. Wolińska-Cichocka , N. Amangeldi , Marzhan Nassurlla , A. Trzcińska , G. Yergaliuly , F.Kh. Ergashev , O.R. Tojiboev , I.Ya. Son , A. Sabidolda , R. Khojayev , Y.B. Mukanov , D.A. Issayev

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Abstract

The ¹¹B(¹⁰B,⁹Be)¹²C reaction was studied at the energy of 41.3 MeV with transitions to the ground (0⁺) and low-lying excited 4.44 MeV (2⁺) and 9.64 MeV (3⁻) states of ¹²C nucleus. The analysis of the measured angular distributions was carried out using a modified distorted wave (MDWBA) method, assuming a one-step proton transfer mechanism. It was shown that at small angles (in the region of the main diffraction maximum) this reaction occurs on the nuclear surface with the dominance of a one-step process. This made possible to determine the values of asymptotic normalization coefficients (ANC) for ¹¹B + p → ¹²C. The squared ANCs equal to 322 ± 76 fm⁻¹, 32.8 ± 8.4 fm⁻¹ and 1.26 ± 0.44 fm⁻¹ for 0⁺, 2⁺ and 3⁻ states of the ¹²C nucleus respectively were obtained. These values were used to take into account the contribution of the direct process in the calculation of astrophysical S-factors for the radiative capture of a proton by the ¹¹B nucleus at astrophysical energies.

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来自 11B(10B,9Be)12C 反应和 11B(p,γ)12C 天体 S 因子的 11B + p → 12C 的渐近归一化系数

研究了能量为 41.3 MeV 的 11B(10B,9Be)12C 反应，以及 12C 核的基态（0+）和 4.44 MeV (2+) 及 9.64 MeV (3-) 低激发态的跃迁。在假设质子一步转移机制的情况下，使用改进的扭曲波（MDWBA）方法对测量到的角度分布进行了分析。结果表明，在小角度（主要衍射最大值区域），这一反应发生在核表面，主要是一步过程。这使得确定 11B + p → 12C 的渐近归一化系数 (ANC) 值成为可能。对于 12C 核的 0+、2+ 和 3-态，得到的平方归一化系数分别为 322 ± 76 fm-1、32.8 ± 8.4 fm-1 和 1.26 ± 0.44 fm-1。在计算天体物理能量下 11B 原子辐射俘获质子的天体物理 S 因子时，这些值被用来考虑直接过程的贡献。

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

Results in Physics MATERIALS SCIENCE, MULTIDISCIPLINARYPHYSIC-PHYSICS, MULTIDISCIPLINARY

CiteScore

8.70

自引率

9.40%

发文量

754

审稿时长

50 days

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