We present the theoretical calculations of the electronic isotope shift factors of the $5d^{7}6s^2{}^4{F}_{9/2}\to (\text{odd},J=9/2)$ line at 247.587 nm, that were recently used to extract nuclear mean square radii and nuclear deformations of iridium isotopes [Mukai et al. (2020)]. The fully relativistic multiconfiguration Dirac-Hartree-Fock method and the relativistic configuration interaction method were used to perform the atomic structure calculations. Additional properties such as the sharing rule, Landé g factors or phase tracking were employed to ensure an adequate description of the targeted odd level.

中文翻译：

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Ir的电子同位素转移因子 $5d^{7}6s^2{}^4{F}_{9/2}\to （\text{奇}，Ĵ=9/2）$ 线在247.587 nm

我们介绍了电子同位素位移因子的理论计算 $5d^{7}6s^2{}^4{F}_{9/2}\to （\text{奇}，Ĵ=9/2）$247.587 nm的谱线，最近被用于提取核均方半径和铱同位素的核形变[Mukai 等。（2020）]。完全相对论的多构型Dirac-Hartree-Fock方法和相对论的构型相互作用方法用于进行原子结构计算。如附加属性共享规则，朗德克因子或相位跟踪被用来确保目标奇数级的适当描述。