In this study we have extended our previous investigations of Cr II spectrum to levels of the 3d${}^4$5s configuration. Once again an overall good agreement is observed for these levels between experimental oscillator strength values and our calculated data using two different approaches, namely the oscillator strength parameterization and the HFR+CPOL methods. Recurring to the latter model we have computed radiative lifetime values for 20 3d${}^4$5s levels, confirming the well founded basis of recent experimental data, given in literature. From the use of the former method and with the help of a least squares fitting procedure to available experimental gf-values we have taken advantage of extracting for the first time the transition radial integral value for 3d${}^4$4p$-$3d${}^4$5s, $〈4p\left|r^1\right|5s〉=1.962\pm 0.005$, which is confirmed favorably by ab initio results, obtained by the HFR method scaled by a factor 0.92 or directly by the HFR+CPOL approach. Finally a long list of semi-empirical oscillator strength, transition probability and branching fraction values is generated for around 500 Cr II transitions depopulating the 3d${}^4$5s levels. Our new gf data are compared successfully with those given by Kurucz.

在这项研究中，我们将先前对Cr II光谱的研究扩展到了3d的水平${}^4$5s配置。再次使用两种不同的方法，即振荡器强度参数化和HFR + CPOL方法，在实验振荡器强度值和我们的计算数据之间观察到了总体良好的一致性。重复使用后一个模型，我们计算了20 3d的辐射寿命值${}^4$5s水平，证实了文献中给出的最新实验数据的良好基础。从使用前一种方法并借助最小二乘拟合程序到可用的实验gf值，我们已经利用了首次提取3d过渡径向积分值的优势${}^4$4p$-$3D${}^4$5秒 $〈4p\left|{\mathrm{[R}}^{\mathrm{1个}}\right|5s〉=\mathrm{1个}。962\pm 0。005$可以通过从头算的结果得到很好的证实，该结果是通过HFR方法获得的，缩放比例为0.92，或者直接通过HFR + CPOL方法获得。最终，生成了约500个Cr II跃迁的半经验振荡器强度，跃迁概率和分支分数值的长列表，该跃迁使3d消失。${}^4$5s级。我们的新gf数据已成功与Kurucz提供的数据进行了比较。