It is normally assumed that induced transitions, by e.g. hyperfine, magnetic field or spin interaction, arise due to mixing in the upper levels. In this paper we discuss an example when mixing in the lower levels through an externally applied magnetic field gives rise to a magnetic field induced transition. We discuss the theory for such a transition and give an example from Fe X, which is relevant for the determination of the magnetic field of the solar corona. To make this possible, it is important to determine the energy difference between the 3 p 4 3 d 4 D 5/2 and 4 D 7/2 , which are accidentally very close in energy in Fe X. The splitting of these levels is expected to be around 3.5 cm −1 whereas their excitation energies are about 388 709 cm −1 . We discuss how this fine structure can be determined, by observing transitions from levels that decay into this pair which have a lo...

中文翻译：

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观察由外部磁场在较低状态下混合引起的跃迁的建议：以Fe X为例

通常假定由于上层的混合而产生例如由超细，磁场或自旋相互作用引起的感应跃迁。在本文中，我们讨论一个示例，该示例通过外部施加的磁场在较低级别进行混合会引起磁场感应的跃迁。我们讨论了这种转变的理论，并从Fe X给出了一个例子，该例子与确定太阳日冕的磁场有关。为了使之成为可能，确定3 p 4 3 d 4 D 5/2和4 D 7/2之间的能量差非常重要，这两个能量偶然在Fe X中的能量非常接近。预期会分裂这些能级为约3.5cm -1，而它们的激发能为约388709cm -1。我们讨论如何确定这种精细结构，