典型文献
Manipulation of nuclear isomers with lasers:mechanisms and prospects
文献摘要：
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 isomer 234mPa.After that,step by step,it was real-ized 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 change AI of a transi-tion is very large.The larger △I,the lower the electromagnetic tran-sition 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 conserv-ing transitions around semi-magic nuclei,where the seniority,which corresponds to the number of unpaired nucleons,is a rea-sonably pure quantum number[2].For a so-called shape isomer,the inhibition of the decay transition comes from the associated shape changes.It is caused by that a nucleus is trapped in a deformed shape which is its secondary minimum and is hard to decay back to its ground state[2].
文献关键词：
中图分类号：
作者姓名：
Zhiguo Ma;Changbo Fu;Wanbing He;Yugang Ma
作者机构：
Key Laboratory of Nuclear Physics and Ion-beam Application(MoE),Institute of Modern Physics,Fudan University,Shanghai 200433,China
文献出处：
引用格式：
[1]Zhiguo Ma;Changbo Fu;Wanbing He;Yugang Ma-.Manipulation of nuclear isomers with lasers:mechanisms and prospects)[J].科学通报（英文版）,2022(15):1526-1529
A类：
234mPa,seniority,conserv,sonably
B类：
Manipulation,nuclear,isomers,lasers,mechanisms,prospects,Over,one,hundred,years,have,passed,since,was,first,introduced,analogy,chemical,describe,lived,excited,states,In,Otto,Hahn,discovered,After,that,step,by,real,ized,different,types,including,spin,shape,fission,occurs,when,very,larger,lower,electromagnetic,rates,longer,half,lives,exists,due,significant,where,projection,total,angular,momentum,symmetry,axis,arise,small,probability,transitions,around,semi,magic,nuclei,which,corresponds,number,unpaired,nucleons,pure,quantum,For,called,inhibition,decay,comes,from,associated,changes,It,caused,nucleus,trapped,deformed,its,secondary,minimum,hard,back,ground
AB值：
0.500748
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