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Extra resources for Atomic, Molecular, and Optical Physics

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8. 9. 6 -97 -9 -160 -210 -180 -160 -47 -75 -140 -207 where IX is the fine-structure constant, E 0 is the non-relativistic part and E 1 is the fine structure splitting (Sect. 5); it is seen that E 1 oc (iXZf E0 . 1). However, the degeneration of levels with orbital quantum number l in the Dirac formula is removed due to the interaction of the electron with the radiation field described by Quantum ElectroDynamics (QED) and causes the splitting between 2s 112 and 2p 112 levels (Fig. 5). 9]. ==tlj 2P1k 1Sv2 31 Fig.

Yim sin 0 dO <5

12) and S-S transitions are ruled out. , transitions with change of spin AS = 1 (so-called intercombination transitions) are forbidden. , for highly charged ions when the spin-orbit interaction is comparable or larger than the electrostatic one. 14) AM= 0, ± 1, ±2. The quadrupole transitions are possible only between states of the same parity. , transitions between S terms (L = L' = 0) and between S and P terms (L = 0, L' = 1) are ruled out. , it allows transitions between terms with equal multiplicity x.

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