Inner-shell photodetachment of Li-
Inner-shell photodetachment of Li-
复制标题
Li-的内壳光脱离
DOI：
10.1088/0953-4075/34/10/107
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
T. Andersen
中科院分区：
文献类型：
--
作者：
H. Kjeldsen;P. Andersen;F. Folkmann;B. Kristensen;T. Andersen
本文用同步辐射与Li ~-离子束重叠的方法测量了Li ~-离子在1 s阈值附近的光剥离截面。对Li 1 s（2s 2 p 3 P）2 P和Li 1 s（2 p3 s 3 P）2 P核激发态的多重激发，即共轭振动，比中性原子或正离子的多重激发强得多，反映了电子关联对负离子的主要影响.多激励的横截面明显大于单激励。
Absolute cross section for photodetachment of Li- ions near the 1s threshold leading to Li+ formation has been measured by overlapping a beam of Li- ions with synchrotron radiation from an undulator. Multiple excitation to the core-excited Li 1s(2s2p 3P) 2P and Li 1s(2p3s 3P) 2P states, i.e. conjugate shakeup, is found to be much stronger than observed for any neutral atom or positive ion, reflecting the dominant influence of electron correlation for negative ions. The cross section for multiple excitation is significantly larger than for single excitation.