Chinese Physics C > 1995, Vol. 19 > Issue(7): 646-652

Studies of Some Exotic Properties of^6—11Li Nuclei in the Framework of Shell Model

Dai Lianrong^,,
Gu Jinnan

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000

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Abstract：
The possible microscopic mechanisms of some exotic properties of ^6—11Li nuclei,especially for dripline nucleus ¹¹Li are investigated in the framework of Shell Model. The quadrupole moment of the ground state of ⁶Li is primarily sensitive to the tensor components of interactions. The electromagnetic transition probabilities of the first excited states of ^6—8Li nuclei are extremely enhanced. The collectiveness possibly results from cluster structures. In the vicinity of 3≤Z ≤5 and N≈8,there may exist the phenomenon of crossed-shell excitation and/or N＝8 shell gap disappeariance.

References

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M.G.Mayer,J.H.D.Jensen,Elementary theory of nuclear structure,John.Wiley:NewYork（1955）.[2]J.P.Elliott,Nucl.Phys.,A507（1990）15c-24c.[3]T.Kobayashietal,Phys.Lett.,B232（1989）51.[4]P.G.Hansen,B.Jonson,Europhysics Lett.,4（1987）409.[5]Y.Suzuki,K.Ikada Phys.Rev.,C38（1988）410.[6]M.Nishimana,Annual Report RCNP（1987）.[7]DieterKurath,Phys.Rev.,C43（1991）43.[8]F.Ajzenberg-Selove,Nucl.Phys,A490（198）1-225.[9]B.A.Brown,E.K.Warburton,B.H.Wildenthal,MSUCL-715（1990）.[10]Proc.ofInt.Suymp.on Structure and Reactions of Unstable Nucl,Nigata,Japan1991,editedbyK.Ikeda and Y.Suzuki,World Scientific P252,158,189,233.[11]H.G.Bohlem,B.Gebauer et al,Z.Phys.,A344（1993）381.[12]S.Cohen,D.Kurath,Nucl.Phys.,73（1965）1.[13]N.Kumar,Nucl.Phys,A225（1974）221.[14]A.G.M.VanHees,A.A.Wolters,P.W.M.Glaudemans,Nucl.Phys.,A476（1988）61.[15]D.J.Millener,D.Kurath,Nucl.Phys.,A255（1975）315.

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Dai Lianrong and Gu Jinnan. Studies of Some Exotic Properties of ^6—11Li Nuclei in the Framework of Shell Model[J]. Chinese Physics C, 1995, 19(7): 646-652.

Dai Lianrong and Gu Jinnan. Studies of Some Exotic Properties of ^6—11Li Nuclei in the Framework of Shell Model[J]. Chinese Physics C, 1995, 19(7): 646-652. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Studies of Some Exotic Properties of^6—11Li Nuclei in the Framework of Shell Model

Dai Lianrong^,
Gu Jinnan

Corresponding author:Dai Lianrong,

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1995-07-05

Abstract:The possible microscopic mechanisms of some exotic properties of^6—11Li nuclei,especially for dripline nucleus¹¹Li are investigated in the framework of Shell Model. The quadrupole moment of the ground state of⁶Li is primarily sensitive to the tensor components of interactions. The electromagnetic transition probabilities of the first excited states of^6—8Li nuclei are extremely enhanced. The collectiveness possibly results from cluster structures. In the vicinity of 3≤Z ≤5 and N≈8,there may exist the phenomenon of crossed-shell excitation and/or N＝8 shell gap disappeariance.