Quantum theory of post-collision interaction in inner-shell photoionization
Quantum theory of post-collision interaction in inner-shell photoionization
复制标题
内壳光电离中碰撞后相互作用的量子理论
DOI：
10.1007/bf01436929
复制
发表时间：
1987
期刊：
影响因子：
--
通讯作者：
M. Chen
中科院分区：
文献类型：
--
作者：
J. Tulkki;G. Armen;T. Åberg;B. Crasemann;M. Chen
我们对x射线诱导的氩K-L2 L3（1D）俄歇和氙L2-L3 N4（J=3）科斯特-克罗尼格电子发射中的碰撞后相互作用效应进行了完全的量子力学和相对论计算。Dirac-Fock计算包括一个完整的集成在中间的一个空穴连续态的共振双光电离截面的最低阶表达式。结果与同步辐射测量的碰撞后相互作用位移非常吻合。我们还对氩K − L2 L3（1D）和氙L3 − M4 M5（1G 4）俄歇电子线的形状进行了非相对论性的哈特里-福克检验计算。量子力学的结果进行了比较与严格的半经典计算，已不使用固定相位近似。这种计算分析的结果被解释在一个分析线形公式的基础上渐近库仑波函数。因此，最显着的特点后碰撞相互作用的内壳层光电离的解释。
We have performed fully quantum-mechanical and relativistic calculations of the post-collision-interaction effect in x-ray-induced argonK−L2L3(1D) Auger and xenonL2−L3N4(J=3) Coster-Kronig-electron emission. The Dirac-Fock computations include a complete integration over intermediate one-hole continuum states in the lowest-order expression of the resonant double-photoionization cross section. The results are in excellent agreement with synchrotron-radiation measurements of the post-collision-interaction shifts. We have also made nonrelativistic Hartree-Fock test calculations of the argonK−L2L3(1D) and xenonL3−M4M5(1G4) Auger-electron line shapes. The quantum-mechanical results are compared with rigorous semiclassical calculations which have been made without using the stationary-phase approximation. The results of this computational analysis are interpreted in terms of an analytical line-shape formula based on asymptotic Coulomb wave functions. As a consequence the most salient features of the post-collision interaction in inner-shell photoionization are explained.