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$${}^{5}$$ 5 He( $${}^{3}$$ 3 He, $${}^{4}$$ 4 He) $${}^{4}$$ 4 He as a three-body reaction via a continuum resonance in the n+ $${}^{4}$$ 4 He system
The European Physical Journal A ( IF 2.7 ) Pub Date : 2020-11-06 , DOI: 10.1140/epja/s10050-020-00293-8
Stefan Typel

The \({}^{5}\)He(\({}^{3}\)He,\({}^{4}\)He)\({}^{4}\)He reaction involving the unstable \({}^{5}\)He nucleus is a possible process in primordial nucleosynthesis to convert \({}^{3}\)He into \({}^{4}\)He in a neutron transfer reaction. Since experimental data for the reaction cross section are not available, a theoretical prediction is needed to estimate the relevance of this process in comparison to other reactions, e.g., \({}^{3}\)He(\({}^{2}\)H,p)\({}^{4}\)He or \({}^{3}\)H(\({}^{2}\)H,n)\({}^{4}\)He. In this work the cross section and the Maxwellian-averaged transition rate of the \({}^{5}\)He(\({}^{3}\)He,\({}^{4}\)He)\({}^{4}\)He reaction are calculated using a post-form distorted-wave Born approximation in a simple cluster model. For that purpose the reaction is treated as a genuine process with three particles, \(\text{ n }+{}^{4}\text{ He }+{}^{3}\text{ He }\), in the entrance channel proceeding through the \(3/2^{-}\) resonance in the \(n-{}^{4}\)He scattering continuum.



中文翻译:

$$ {} ^ {5} $$ 5 He($$ {} ^ {3} $$ 3 He,$$ {} ^ {4} $$ 4 He)$$ {} ^ {4} $$ 4他通过n + $$ {} ^ {4} $$ 4 He系统中的连续共振作为三体反应

\({} ^ {5} \)赫(\({} ^ {3} \)赫,\({} ^ {4} \)赫)\({} ^ {4} \)赫反应涉及不稳定的\({} ^ {5} \) He核是原始核合成中将\({} ^ {3} \) He转换为\({} ^ {4} \) He的可能过程反应。由于没有反应横截面的实验数据,因此需要理论预测来估计该过程与其他反应(例如\({} ^ {3} \) He(\({} ^ { 2} \) H,p)\({} ^ {4} \) He或\({} ^ {3} \) H(\({} ^ {2} \) H,n)\({} ^ {4} \)他。在此工作中,\({} ^ {5} \) He(\({} ^ {3} \) He,\({} ^ {4} \) He的横截面和Maxwellian平均转换率)\({} ^ {4} \)在简单的群集模型中,使用后形式的畸变波Born近似来计算He反应。为此目的,反应被视为真正过程具有三个颗粒,\(\文本{N} + {} ^ {4} \文本{他} + {} ^ {3} \文本{他} \),在进入通道在\(n-{} ^ {4} \) He散射连续体中通过\(3/2 ^ {-} \)共振进行。

更新日期:2020-11-06
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