【摘要】 作者用多体微扰理论 (MBPT) ,对开壳层钠和钾原子的最外满壳层单光子电离过程进行了研究和理论计算 .利用多体微扰理论的Goldstone图示法 ,对主要的电子关联作用进行了分析 ,给出了完整的从零级到二级的图示 ,其中二级近似包括了Therandom phaseapproximation(RPA)及重要的Brueckner orbital(BO)和Structure radiation(SR)关联 .考虑了分波截面在不同近似级下的变化 .给出了截面的长度形式和速度形式 ,这两种形式符合较好 ,而且总截面与实验值亦符合较好更多还原

【Abstract】 The single photoionization of the outermost fully occupied shell in Na,K is studied within the framework of many body perturbation theory. The main electron correlation is analyzed and the diagrams from zero order to second order were given. It is showed that RPA,BO and SR correlation are dominant in the second order correlations which are present in Goldstone diagram. The length and velocity forms and the improvement for the partial cross sections within different correlations were given. The results are compared with measurements and theoretical calculations.更多还原