This article reports the study of various inelastic channels such as positronium formation and ionization for positron scattering from group IIA elements. Modified spherical complex optical potential method developed by our group is employed for the present calculations for an extensive energy range from positronium formation threshold to 5 keV. Furthermore, a modified absorption threshold is introduced, which is utilized for targets having ionization threshold < 6.8 eV. Comparison with existing data shows overall good agreement. Due to limited cross section studies on present targets, most of the results presented in this article have been reported for the first time.

本文报道了各种非弹性通道的研究，例如形成IIA组元素的正电子散射的正电子形成和电离。我们小组开发的改进的球形复光学势能方法用于本计算，计算的范围很广，从正电子形成阈值到5 keV。此外，引入了修改后的吸收阈值，该阈值用于电离阈值<6.8 eV的目标。与现有数据的比较显示出总体良好的一致性。由于对当前目标的横断面研究有限，本文首次提出了大多数结果。