Investigation of Optical Ionization of Strontium via 5s2 1S0 → 5s5p 3P1○ → 5s5d 3D2 → 4dnp (or 4dnf, n=39) for Isotope Selectivity Enhancement
Investigation of Optical Ionization of Strontium via 5s2 1S0 → 5s5p 3P1○ → 5s5d 3D2 → 4dnp (or 4dnf, n=39) for Isotope Selectivity Enhancement
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通过 5s2 1S0 → 5s5p 3P1○ → 5s5d 3D2 → 4dnp（或 4dnf，n=39）研究锶的光电离以增强同位素选择性
DOI：
10.1155/2018/5612360
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发表时间：
2018
影响因子：
2
通讯作者：
Hasegawa Shuichi
中科院分区：
文献类型：
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作者：
Cheon Donguk;Iwata Yoshihiro;Miyabe Masabumi;Wakaida Ikuo;Hasegawa Shuichi
我们研究了锶(Sr)5s21S0⟶ 5s5p3⟶ 5s5d3d2⟶ 4dnp(或4dnf，n= 39)的三步共振电离方案。在第二跃迁中观察到的功率展宽表明，小于0.2 mW的激光功率足以饱和这一跃迁。由于4dnp(或4dnf，n= 39)自电离能级的宽度较窄，应用3d跃迁可以成功地实现同位素分离，为环境应用中痕量~(90)Sr的分析铺平了道路。
We investigated a promising three‐step resonance ionization scheme of strontium (Sr) 5s21S0⟶ 5s5p3⟶ 5s5d3D2⟶ 4dnp (or 4dnf,n= 39) using the first‐step intercombination transition for the enhancement of isotope selectivity. The power broadening observed in the 2ndtransition indicates that laser power of less than 0.2 mW is sufficient for saturating this transition. Isotope separation can be successfully expected with application of the 3rdtransition due to the narrow width of the 4dnp (or 4dnf,n= 39) autoionization level, paving the way for analysis of trace90Sr in environmental applications.