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在ＨＦＲ方法的基础上，考虑束缚组态间的相互作用，解决了Ｃｏｗａｎ程序光电计算过程中小能量区间误差偏大及一次计算自由电子能量范围受限制的问题，确定了阈能点的计算方式，从而使大量计算成为可能．分析证明了计算结果的正确性并估计了计算精度．并对锂、钠与铯原子计算的结果与参考文献做了比较，从理论上分析了能极水平光电截面求和后的结果与轨道水平光电截面的过渡关系与差别．
On the basis of HFR method, considering the interaction between the confinement configurations, the problem of large error of small energy range and limited free energy range of electrons in the calculation of Cowan program are solved, and the calculation method of threshold energy point is determined. So that a large number of calculations possible. The analysis proves the correctness of the calculation results and estimates the calculation accuracy. The calculated results of lithium, sodium and cesium atoms are compared with the references, and the transitional relationships and differences between the results obtained at the very level of the photoelectric cross section and the orbital photoelectric cross sections are theoretically analyzed.