论文标题
$ \ pmb {（n，γ）^{127}} $ SB横截面的间接测量
Indirect measurement of the $\pmb{(n,γ)^{127}}$Sb cross section
论文作者
论文摘要
$^{135} $ i区域中的核已被确定为\ textit {i}过程的可能的瓶颈。在这里，我们提供了$^{126} \ text {sb}（n，γ）$的麦克斯韦平均横截面的间接测量。使用OSLO方法从$^{124} $ sn $（α，pγ）^{127} $ sb数据提取的$^{127} $ sb的核水平密度和$γ$ -Ray强度函数。低兴奋能源区域的水平密度与已知离散水平非常吻合，高兴奋能源区域遵循与恒温模型兼容的指数曲线。 $e_γ\ $ 1.5-8.0之间的强度函数呈现出几个功能，例如上升和可能是双层侏儒的结构。核反应代码中包含的理论模型似乎都无法再现实验数据。 $^{126} $ sb $（n，γ）^{127} $ sb反应的麦克斯韦平均横截面已通过使用我们的水平密度和强度函数数据作为对TALY的输入来实验限制。我们观察到与Jina Reaclib，Terdl和Bruslib库有很好的一致性，而ENDF/B-VIII.0库的预测率明显高于我们的结果。
Nuclei in the $^{135}$I region have been identified as being a possible bottleneck for the \textit{i} process. Here we present an indirect measurement for the Maxwellian-averaged cross section of $^{126}\text{Sb}(n,γ)$. The nuclear level density and the $γ$-ray strength function of $^{127}$Sb have been extracted from $^{124}$Sn$(α,pγ)^{127}$Sb data using the Oslo method. The level density in the low-excitation-energy region agrees well with known discrete levels, and the higher-excitation-energy region follows an exponential curve compatible with the constant-temperature model. The strength function between $E_γ\approx$ 1.5-8.0 MeV presents several features, such as an upbend and a possibly double-peaked pygmy-like structure. None of the theoretical models included in the nuclear reaction code TALYS seem to reproduce the experimental data. The Maxwellian-averaged cross section for the $^{126}$Sb$(n,γ)^{127}$Sb reaction has been experimentally constrained by using our level-density and strength-function data as input to TALYS. We observe a good agreement with the JINA REACLIB, TENDL, and BRUSLIB libraries, while the ENDF/B-VIII.0 library predicts a significantly higher rate than our results.
