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2 votes
1 answer
147 views

What is the emission spectra of electrons under the Zeeman/Stark effect?

As the Zeeman effect/Stark effect lead to a change in the energy levels of orbital electrons in relation to their spin, similar to hyperfine transitions, I was wondering what the emission spectra of ...
Evamentality's user avatar
2 votes
0 answers
81 views

Is spin-orbit coupling mass dependent?

When comparing spin-orbit coupling in the case of electrons and in the case of nucleons, do nuclear states exhibit a stronger level splitting compared to atomic states because the nucleons are more ...
MrFu's user avatar
  • 255
15 votes
2 answers
3k views

Why do spin-$\frac{1}{2}$ nuclei have zero electric quadrupole moment?

Why do spin-$\frac{1}{2}$ nuclei have zero electric quadrupole moment? How does this come about, and how can one tell in general whether a spin-$j$ nucleus can have a nonzero quadrupole (or higher ...
xiaohuamao's user avatar
  • 3,701