Ab initio处理分子Coster-Kronig衰变使用复杂尺度的运动方程合集群理论
Jan Philipp Drennhaus1, Anthuan Ferino-Pérez1, Florian Matz1
1Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium. thomas.jagau@kuleuven.be.
Physical chemistry chemical physics : PCCP
|September 4, 2024
概括
这项研究将分子奥格尔光谱方法扩展到科斯特-克罗尼格衰变,揭示了自旋轨道合对和硫化衰变分支比的显著影响.
科学领域:
- 原子和分子物理 原子和分子物理
- 量子化学 是一个量子化学.
- 频谱学是一种光谱学.
背景情况:
- 科斯特-克罗尼格衰变涉及L1外空缺的非辐射填充,发射低能电子.
- 这个过程类似于奥格衰变,但在电子运动能量方面是不同的.
- 了解这些衰变对于原子和分子电子结构至关重要.
研究的目的:
- 扩展分子奥格尔光谱的计算方法到科斯特-克罗尼格衰变.
- 在和硫化中计算2s-1状态的电离能和衰变宽度.
- 构建和分析L1L2,3M科斯特-克罗尼格和L1MM奥格尔光谱.
主要方法:
- 使用复杂尺度的运动方程合集群理论.
- 扩展以前开发的Auger光谱构造方法.
- 计算电离能,总和部分衰变宽度.
主要成果:
- 成功计算了L1L2,3M科斯特-克罗尼格和L1MM奥格尔工艺的光谱.
- 对整个光谱的现有实验和理论数据取得了良好的一致性.
- 在分支比率中发现了实质性的分歧,特别是关于旋转轨道合效应.
结论:
- 开发的方法对于模拟科斯特-克罗尼格衰变光谱是有效的.
- 旋转轨道合在科斯特-克罗尼格衰变中起着重要作用,即使对于较轻的元素.
- 进一步调查旋转轨道效应是准确预测的必要条件.
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