论文标题
在Cu和Ag上使用扭曲的电子束进行半偏见（E，2E）研究
Semi-relativistic (e,2e) study with twisted electron beam on Cu and Ag
论文作者
论文摘要
在此交流中，我们报告了相对论（E，2E）过程的三重差分横截面（TDC）的计算，该过程在Co Coplanar不对称几何模式下使用Cu和Ag原子靶标的扭曲的电子束进行计算。理论形式主义是在第一个诞生的近似（FBA）中开发的，在该近似值（FBA）中，我们使用狄拉克平面波以及入射电子束的扭曲电子波研究扭曲电子束的各种参数对（E，2E）过程的影响。我们分别为分散的，弹出和K壳电子使用狄拉克平面波，半相对论库仑波和达尔文波函数。我们将扭曲电子冲击（E，2E）过程的TDC的角曲线与平面波的角度进行了比较。我们将TDC隔离到电荷 - 充电相互作用和电流相互作用与它们的干扰项，并研究扭曲电子束对它们的不同参数对它们的影响。该研究还扩展到宏观CU和Ag靶标，以进一步研究扭曲电子束对TDC的开头的影响。还研究了由极化入射电子束引起的TDC中的自旋不对称，以阐明扭曲的电子束对（E，2E）过程的影响。
In this communication, we report our calculations of Triple Differential Cross-Section (TDCS) for the relativistic (e,2e) process with a twisted electron beam on Cu and Ag atomic targets in coplanar asymmetric geometry mode. The theoretical formalism has been developed in the first Born approximation (FBA) in which we use the Dirac plane wave as well as the twisted electron wave for the incident electron beam to study the effect of various parameters of the twisted electron beam on the (e,2e) process. We use Dirac plane wave, semi relativistic Coulomb wave and Darwin wave function for the scattered, ejected and K-shell electron respectively. We compare the angular profiles of the TDCS of the twisted electron impact (e,2e) process with that of the plane wave. We segregate the TDCS for charge-charge interaction and current-current interaction with their interference term and study the effect of different parameters of the twisted electron beam on them. The study is also extended to the macroscopic Cu and Ag targets to further investigate the effect of the opening angle of the twisted electron beam on TDCS. The spin asymmetry in TDCS caused by polarized incident electron beam is also studied to elucidate the effects of the twisted electron beam on the (e,2e) process.
