spin-orbit multiplet

spin-orbit multiplet

[′spin ¦ȯr·bət ′məl·tə·plət]
(physics)
A collection of atomic or nuclear states which differ in energy only on account of spin-orbit coupling; the total spin angular momentum quantum number S and total orbital angular momentum quantum number L are the same for all states; the energy levels are labeled by the total angular momentum quantum number J.
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