Isotope shifts of energy levels in the naturally abundant isotopes of strontium and calcium
Isotope shifts of energy levels in the naturally abundant isotopes of strontium and calcium
复制标题
天然丰富的锶和钙同位素中能量水平的同位素变化
DOI：
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复制
发表时间：
1983
期刊：
影响因子：
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通讯作者：
L. Pendrill
中科院分区：
文献类型：
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作者：
C. Lorenzen;K. Niemax;L. Pendrill
碱土元素 Ca 和 Sr 光谱中长系列谱线的同位素位移已通过使用热离子二极管的无多普勒双光子激光光谱测量。过渡同位素位移随跃迁能量的变化产生参考电离极限的能级同位素位移以及这些位移如何随光学活性电子的结合能变化。这些元素中最大的同位素水平变化似乎是由状态混合存在下的比质量效应引起的。
The isotope shifts of long series of spectral lines in the optical spectra of the alkaline-earth elements Ca and Sr have been measured by Doppler-free, two-photon laser spectroscopy with a thermionic diode. The variation of transition isotope shifts with transition energy yields the level isotope shifts with reference to the ionization limit and how these shifts vary with the binding energy of the optically active electron. The largest isotope shifts of levels in these elements appear to arise from the specific-mass effect in the presence of state mixing.