中文摘要：

采用多组态相互作用方法及Rayleigh-Ritz变分法，计算了类铍离子等电子系列（Z=4-10）激发态1s^22p^23P^e的非相对论能量，利用截断变分方法得到能量改进量，进一步考虑相对论效应和质量极化效应．从而获得了高精度的能量计算值．给出了类铍离子等电子系列激发态1s^22p^23P^e的相对论能量修正和质量极化效应随核电荷数Z变化的情况．同时还计算了激发态1s^22p^23P^e的精细结构能级和劈裂，以及1s^22p^23P^e到1s^22p^23P^e态的辐射跃迁波长．计算结果与其他理论和实验符合得很好．

英文摘要：

The Rayleigh-Ritz variational method is carried out with a multiconfiguration interaction wave function and restricted variational method to obtain the relativistic energies and fine structure of the low-lying state 1s^22p^23P^e for the beryllium isoelectronie sequence （Z = 4 - 10）. To saturate the wave functional space and to improve the energy, the restricted variational method is used to compute energy contributions from each chosen angular-spin series. To further improve the energy, relativistic corrections and the mass polarization effects are evaluated with the first-order perturbation theory. The relativistic perturbation operators considered in this work are correction to the kinetic energy （P^4）, Darwin term, electron-electron contact term, and orhit-orhit interaction. The relativistic energy corrections and the mass polarization effects of the low-lying excited states 1s^22p^23P^e for beryllium isoelectronic sequence （Z = 4- 10） are demonstrated with figures. The oscillator strengths, transition rates and wavelengths are also calculated. The calculated results are compared with other theoretical and experimental data in the literature.