强激光影响核同质异能态:物理机制与前景展望（英文）

作者：马志国; 符长波^*; 何万兵^*; 马余刚

来源：Science Bulletin, 2022, 67(15): 1526-1529.

<正>Over one hundred years have passed since the nuclear isomer was first introduced,in analogy with chemical isomers to describe long-lived excited nuclear states.In 1921,Otto Hahn discovered the first nuclear isomer234mPa.After that,step by step,it was realized that different types of nuclear isomers exist,including spin isomer,K isomer,seniority isomers,and"shape and fission"isomer[1,2].The spin isomer occurs when the spin changeΔI of a transition is very large.The largerΔI,the lower the electromagnetic transition rates,and the longer the half-lives.The K-isomer exists due to the significant change in K,where K is the projection of the total angular momentum on the symmetry axis.The seniority isomers arise due to very small transition probability in seniority conserving transitions around semi-magic nuclei,where the seniority,

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  复旦大学