3d absorption spectra of Sr I through Sr IV.
3d absorption spectra of Sr I through Sr IV.
复制标题
DOI：
10.1103/physreva.51.2053
复制
发表时间：
1995-03
期刊：
影响因子：
--
通讯作者：
McGuinness;O'Sullivan;Carroll;Audley;Mansfield
中科院分区：
文献类型：
--
作者：
McGuinness;O'Sullivan;Carroll;Audley;Mansfield
用双激光等离子体技术在一系列实验中记录了中性到三倍电离锶的极紫外光吸收光谱。在光谱中发现了显著的差异，这可以归因于由于nf波函数收缩，振子强度从3d-np跃迁到3d-nf跃迁。在sr和${\mathm{sr}}^{+}$中，4p子壳打开，3d\susureath{\right tarrow}nf跃迁最强；在${\mathm{sr}}^{2+}$中，4p亚壳打开，3d\susureath{\right tarrow}nf跃迁是最强的特征。计算了3d\ensuremath{\rightarrow}\ensuremath{\varepsilon}f和3d\ensuremath{\rightarrow}\ensuremath{\varepsilon}p光致电离的部分截面，并与实验进行了比较。
The extreme ultraviolet photoabsorption spectra of neutral to three-times-ionized strontium have been recorded in a comprehensive series of experiments with the dual laser-produced plasma technique. Striking differences were found in the spectra, which can be attributed to the transfer of oscillator strength from 3d\ensuremath{\rightarrow}np to 3d\ensuremath{\rightarrow}nf transitions at ${\mathrm{Sr}}^{2+}$ due to nf wave-function contraction. In Sr and ${\mathrm{Sr}}^{+}$, 3d\ensuremath{\rightarrow}5p transitions dominate; in ${\mathrm{Sr}}^{2+}$, 3d\ensuremath{\rightarrow}nf transitions are most intense, while in ${\mathrm{Sr}}^{3+}$ the 4p subshell opens and 3d\ensuremath{\rightarrow}4p transitions are the strongest features. Partial cross sections for 3d\ensuremath{\rightarrow}\ensuremath{\varepsilon}f and 3d\ensuremath{\rightarrow}\ensuremath{\varepsilon}p photoionization were calculated and compared with experiment.