Nuclear Theory: Nuclear Isomers and High-spin States

The quantum number K is a quantum number that measured in the initial frame.

Nuclear isomer has been an interesting object since its decay time is longer than other normal nuclei. Its physical origin comes from the fact that simple transitions(e.g., dipole transition) are forbidden processes in nature. The multipolarity transition has been observed in many nuclei, but even now, it is conspicuous subject in nuclear physics.

Nuclear Astrophysics: What is r-process?