In this work, we carry out an comprehensive study for the electron scattering with atomic argon in the framework of relativistic box-variational method. The phase shifts first are extracted from relativistic coupled-cluster-theory calculations. Then the properties including total elastic, momentum transfer, viscosity cross sections, and differential cross sections are evaluated and compared with available experimental and theoretical data. The validity and accuracy of present method are verified by the good agreement with experimental values, especially for the differential cross sections at small angle forward and backward scattering where obvious discrepancies exist between experiments and theories. The predicted scattering length of $-$1.39 $a_0$ for electron-Argon system is only 2$\%$ larger in magnitude than the most recent experimental estimate. In addition, the role of electron correlation effect are also investigated in these properties.

中文翻译：

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相对论耦合簇理论研究低能电子与氩的散射

在这项工作中，我们在相对论盒变分法的框架下对原子氩电子的散射进行了全面的研究。首先从相对论耦合簇理论计算中提取相移。然后评估包括总弹性，动量传递，粘度横截面和微分横截面的特性，并将其与可用的实验和理论数据进行比较。通过与实验值的良好吻合证明了本方法的有效性和准确性，特别是对于小角度前向和后向散射的微分截面，其中实验与理论之间存在明显的差异。预测的散射长度为$-$ 1.39${\mathrm{一种}}_0$ 电子-氩气系统只有2$％$比最近的实验估计值大。此外，还在这些性质中研究了电子相关效应的作用。