We have taken advantage of the existence of some experimental Mn II hyperfine magnetic dipole constant ($A$) values given in literature with low uncertainties to achieve for a first time an accurate hyperfine structure (hfs) parametric study. The monoelectronic hfs parameter values were extracted in their entirety for the alone stable ⁵⁵Mn II. For example for 3d⁴4s configuration we obtain: $a_{4\mathrm{s}}^{10}=198.08$ mk and $a_{3\mathrm{d}}^{01}=17.14$ mk. These semi-empirically extracted single-electron parameters were analyzed and compared with ab-initio calculations. In this first part of a global work, devoted particularly to even-parity levels we have at beginning studied a fine structure of two hundred levels, giving their leading eigenvector percentages and their calculated Landé-factor $g_J$. We present also predicted singlet, triplet and quintet positions of missing experimental levels up to 120 000 cm⁻¹, not far from Mn II ionization energy of 126 000 cm⁻¹. We close this work by giving predicted values of magnetic dipole hfs constants of all known levels of the most relevant Mn II even-parity configuration: 3d⁴4s, whose splitting is not yet measured.

我们利用了一些实验性Mn II超细磁偶极常数（$\mathrm{一种}$）具有低不确定性的文献中给出的值，首次实现了精确的超精细结构（hfs）参数研究。对于单独的稳定的⁵⁵ Mn II，完整提取了单电子hfs参数值 。例如，对于3d ⁴ 4s配置，我们获得：${\mathrm{一种}}_{4\mathrm{s}}^{10}=198。08$ mk和 ${\mathrm{一种}}_{3\mathrm{d}}^{01}=17。14$mk。分析了这些半经验提取的单电子参数，并将其与从头算计算进行了比较。在全球工作的第一部分中，我们专门研究了偶数水平，我们一开始就研究了200个水平的精细结构，并给出了其领先的特征向量百分比和计算得出的Landé因子$G_{Ĵ}$。我们目前还预测了高达120000 cm ^-1的实验水平缺失的单重态，三重态和五重态位置，距离Mn II电离能126 000 cm ^-1不远。我们通过给出最相关的Mn II奇偶校验构型的所有已知水平的磁偶极hfs常数的预测值来结束这项工作：3d ⁴ 4s，其分裂尚未测量。