Theoretical analysis of ionic autoionization spectra of lanthanum via an intermediate state [Xe]5d6d 1P1

• 来源期刊: 中国物理B（英文版）
• 关键词: configuration interaction multi-channel quantum defect theory relativistic multichannel theory autoionization Rydberg series
• 年，卷（期）: 2009,（10）
• 页码范围: 4242-4250
• 页数: 9页
• 语种: 英文

摘要

In the framework of multi-channel quantum defect theory, eigenquantum defectsμa and the transformation matrices Uia of La+ are calculated from first principles by relativistic multi-channel theory, while the dipole matrix elements Da are obtained by fitting with experimental data. Then the ionic autoionization spectra of lanthanum via the intermediate state [Xe]5d6d 1P1 in the energy region of 90213-91905 cm-1 are obtained. Experimental peaks are classified and assigned by comparing with the corresponding calculated spectra. More specifically, four ionic autoionization Rydberg series converging to La2+ 5d5/2 2D5/2 and several states converging to higher lying states of La2+ are found and assigned.