Theoretical Study of Relativistic Retardation Effects: the Abnormal Fine Structure of O Ⅱ

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2007,（5）
• 页码范围: 1214-1216
• 页数: 3页
• 语种: 英文

摘要

Using multi-configuration Dirac-Fock and relativistic configuration interaction methods with high-order corrections, we report our precise calculation results of the fine-structure energy levels of the ground-state configuration of OⅡ(1s22s22p3). Our calculated fine-structure splittings of 2D3/2,5/2 and 2P1/2,3/2 are abnormal. We elucidate that the transverse (Breit) interaction, i.e. relativistic retardation effect, plays an important role for the abnormal fine-structure splittings. Our calculation results are in good agreement with experimental measurements.