论文标题
从头开始计算反应堆抗肿瘤通量具有精确的Lepton波函数
Ab initio calculations of reactor antineutrino fluxes with exact lepton wave functions
论文作者
论文摘要
假设所有衰减分支都允许GT跃迁，则提供同位素反应器抗神经通量的新型\ textit {ab initio}计算。我们说明，分析性费米函数和有限尺寸效应每个都可能具有$ \ MATHCAL {O}（10 \％）$的最大光谱偏差，而它们的组合效果可能导致光谱偏差在5％-10％的水平上。同时，我们还发现几种形式的扩展电荷分布对光谱变化具有可忽略的影响。使用分析单一β衰减频谱进行了使用最新的核数据库，我们的新计算显示了累积的抗雷剂和电子能量的2％-4％的相反频谱偏差，这可能会导致观察到的较高的分析量，我们的新计算在2％-4％的水平上显示了相反的光谱偏差。最后，我们观察到分析β衰变光谱近似的{偏见}对于所有四个散散等同位素来说都是通用的。
New \textit{ab initio} calculations of the isotopic reactor antineutrino fluxes are provided with exact numerical calculations of the lepton wave functions, assuming all the decay branches are allowed GT transitions. We illustrate that the analytical Fermi function and finite size effect each could have the largest spectral deviation of $\mathcal{O}(10\%)$, whereas the effect of their combination could result in spectral deviations at the level of 5%-10%. Meanwhile, we also find that several forms of the extended charge distributions have negligible effects on the spectral variation. Using the state-of-the-art nuclear databases, compared to usual \textit{ab initio} calculations using the analytical single beta decay spectrum, our new calculation shows sizable but opposite spectral deviations at the level of 2%-4% for the cumulative antineutrino and electron energy spectra which may partially contribute to the observed spectral excess in the high energy antineutrino range. Finally we observe that the {bias} of analytical beta decay spectrum approximation is rather universal for all the four fissionable isotopes.
