All available experimental data on isotope shifts and absolute frequency measurements in the optical spectra of Ca I and Ca II are re-evaluated, and from them complete tables of isotope shifts and energy levels of all Ca isotopes from 36 to 52 are derived. A global least-squares fitting of these data was performed. From this fit, the field and mass shift constants for all involved transitions and energy levels were derived along with improved values for differences of mean squared nuclear charge radii.

中文翻译：

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中性和单离子钙的同位素迁移

重新评估了Ca I和Ca II光谱中所有可用的同位素位移实验数据和绝对频率测量值，并从中得出了从36到52的所有Ca同位素的同位素位移和能级的完整表。对这些数据进行全局最小二乘拟合。通过这种拟合，得出了所有涉及的跃迁和能级的场和质量位移常数，以及核均方根半径平方差的改进值。