Atomic and Nuclear Transitions

[popffabrik1]

Can anybody tell me why atomic decays are usually only through electric dipole transitions, while nuclear decay often shows many different multipoles? i think that the transition rate for electric dipole transitions is much larger than for magnetic ones, but that doesn't really explain it. would appreciate any help!

 

[Meir Achuz]

Nuclear states are generally more complicated, so lower L values may be forbidden.