Isomeric decays with multipolarity $$\lambda \ge$$ 3

Abstract

AbstractIsomeric decays with multipolarity $$\lambda \ge 3$$ λ ≥ 3 are discussed. Parity changing E3, M4, E5 decays are more widespread within the nuclide chart when compared to parity conserving M3, E4 and M5 transitions, which is the consequence of the properties of the nuclear shell model. The E3 transitions around $$^{208}$$ 208 Pb are classified depending on their origins. Systematics of M4 and E5 transitions are presented. These provide an excellent test to the study of shell evolution in different parts of the nuclide chart as well as the nature of the effective charges.