Atomic transitions in alkali metals that have zero probability in the absence of a magnetic field but have large probabilities in the presence of a magnetic field are called magnetically induced (MI). They are of interest because of their large probabilities, which exceed the probabilities of usual transitions in a wide magnetic field range. Magnetically induced transitions are classified as type-1 (MI1) and type-2 (MI2) and their total number is about 100. In this work, MI2 transitions are examined between ground F_g and excited levels F_e of the hyperfine structure satisfying the condition \({{F}_{{\text{e}}}} - {{F}_{{\text{g}}}} = \Delta F = \pm 2\), which are forbidden in zero magnetic field but have large probabilities in the presence of a magnetic field. The probabilities of the MI2 transitions with \(\Delta F = + 2\) and the MI transitions with \(\Delta F = - 2\) are maximal in the case of optical radiation with the σ⁺ and σ^– polarizations, respectively. This difference is called type-1 magnetically induced circular dichroism (MICD1). It has been shown for the first time that the probability of the strongest MI2 transition in the ⁸⁵Rb atom corresponding to the D₂ line in magnetic fields >100 G in the case of \({{\sigma }^{ + }}\) radiation is larger than the probability of the strongest MI2 transition in the case of σ^– radiation by a factor of 2.5. This difference is called type-2 magnetically induced circular dichroism (MICD2). It has been shown how to determine the strongest MI transition for any alkali metal atom, which is important for its application in magneto-optical processes. Theoretical curves reproduce well experimental results.

碱金属中在没有磁场的情况下概率为零但在有磁场的情况下概率很大的原子跃迁称为磁感应（MI）。它们是令人感兴趣的，因为它们的概率很大，超过了在很宽的磁场范围内通常转变的概率。磁诱导跃迁分为类型 1 (MI1) 和类型 2 (MI2)，它们的总数约为 100。在这项工作中，研究了满足以下条件的超精细结构的基态F _g和激发能级F _e之间的 MI2 跃迁条件\({{F}_{{\text{e}}}} - {{F}_{{\text{g}}}} = \Delta F = \pm 2\)，这在零磁场中是禁止的，但在有磁场的情况下有很大的概率。MI2 跃迁与\(\Delta F = + 2\)和 MI 跃迁与\(\Delta F = - 2\)的概率在分别具有 σ ⁺和 σ ^-偏振的光辐射的情况下是最大的. 这种差异称为 1 型磁感应圆二色性 (MICD1)。已经示出在第一次，在最强MI2过渡的概率⁸⁵对应于RB原子d ₂中的磁场线>将100g的情况下\（{{\西格玛} ^ {+}} \ )在 σ ^–辐射的情况下，辐射比最强 MI2 跃迁的概率大2.5 倍。这种差异称为 2 型磁感应圆二色性 (MICD2)。已经展示了如何确定任何碱金属原子的最强 MI 跃迁，这对其在磁光过程中的应用很重要。理论曲线很好地再现了实验结果。