论文标题
从头算计算低能核散射
Ab initio calculations of low-energy nuclear scattering using confining potential traps
论文作者
论文摘要
测试了一种最近修改的方法，可以从谐波电位陷阱中限制的目标项目簇的离散能级中提取低能核散射结果。我们报告了中子的令人鼓舞的结果 - $α$和中子 - $^{24} \ MATHRM {O} $弹性散射，分析使用两种不同的核结构方法计算得出的捕获水平。 $ n $ - $α$结果也已针对直接的AB INTILE反应计算进行了检查。 $ n $ - $^{24} \ MATHRM {O} $结果证明了该方法适用于大量系统的适用性，前提是可以通过AB INTIOL方法计算其陷阱中的光谱。一个关键的成分是对从头算方法中不可避免的希尔伯特空间截断引起的计算能量水平中的误差的严格理解。
A recently modified method to enable low-energy nuclear scattering results to be extracted from the discrete energy levels of the target-projectile clusters confined by harmonic potential traps is tested. We report encouraging results for neutron--$α$ and neutron--$^{24}\mathrm{O}$ elastic scattering from analyzing the trapped levels computed using two different ab initio nuclear structure methods. The $n$--$α$ results have also been checked against a direct ab initio reaction calculation. The $n$--$^{24}\mathrm{O}$ results demonstrate the approach's applicability for a large range of systems provided their spectra in traps can be computed by ab initio methods. A key ingredient is a rigorous understanding of the errors in the calculated energy levels caused by inevitable Hilbert-space truncations in the ab initio methods.
