中文摘要：

以相对论多体微扰理论为基础，利用屏蔽理论的思想和方法，引入并改进了与核电荷数Z相关的能量修正函数，计算了C工等电子序列离子（6≤Z≤55）基组态（1s^22s^22p^2）和第一激发态（1s^22s^22p^1）能量．计算过程基于自编的C语言和MATLAB程序，所得结果与实验值符合得很好，大大减小了由于忽略能量高阶项产生的误差，证明此项改进适用于等电子序列离子组态能量的计算．

英文摘要：

Based on the relativistic many-body perturbation theory（RMBPT） and screening theory for many electron atomic system, the energies of C-like sequence ions（ 6 ≤ Z ≤ 55 ） for ground configuration（ 1s^22s^22p^2 ） and the first excited configuration（ 1s^22s^22p^1 ） are calculated. An improved Z-dependent modify function is introduced to increase the accuracy of the result, which makes it excellent agree with the available experimental data. C and MATLAB programs are designed for this calculation. The conclusion is obtained that this modification is suitable for the calculation of the configuration energies of isoelectronic sequence ions.