Chinese Physics C > 1990, Vol. 14 > Issue(1): 49-55

MICROSCOPIC STUDY OF QUASI-ROTATIONAL BANDS IN DOUBLE-EVEN Sn NUCLEI

Institute of Particle Physics,Hua-Zhong Normal University,Wuhan1 Department of Physics,Peking University

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Abstract：
Based on the boson expansion and the so-called Jancovici-Schiff substitution,and approach has been developed to study the microscopic foundation of the interacting boson model.In this work an extension of the approach is made,thus one is able to treat the excitations of such system in which several neutron bosons,a proton boson and a proton-hole boson exist.With the consideration of the proton two-particle excitations we have studied the intruder quasi-rotational bands in double-even Sn nuclei.The Calculated results are compared with experiment and some features of the configuration mixture are discussed.

References

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J. Bron, W. H. A. Hesselink,A. Van Poelgeest, J. J.A. Zalmstra, M. J. Uitzinger, H. Verheul, H Heyde,M. Waroquier, P. Van Isacker and H. Vincx,Nucl. Phys., A318(1979), 335.[2] H. W. Fielding, R. E. Anderson, C. D. ZaFiratos,. D. A. Lind, F. E. Cecil, H. H. Wieman and W. P. Alford, Nucl. Phys., A281(r1977), 389[3] J. L. Wood, Nucl. Phys.,A421(1984), 43.[4] P. Van Isacker, K. Heyd M. Waroquier and G. Wenes, Phys. Len., B104(1981), 5; Nucl. Phys., A380(1982), 383.[5] P. D. Duval and B. R. Barrett, Nucl. Phys., A376(1982), 213.[6] 杨泽森、刘庸、田晓岑，高能物理与核物理，6(1982)，472; Chin. Phys.,3(1983),345.[7] Yang Ze-sen, Liu Yong and Qi Hui, Nucl. Phys., A421(1984), 297c.[8] 杨泽森，高能物理与核物理，9(1985),341.[9] J. S. Bell, Nucl. Phys., 12(1959), 119.[10] D. Janssen, F. Donau, S. Frauendorf and R. V. Jobs, Nucl. Phys., A172(1971), 145[11] T. Usui, Progr. Thccr. Phys., 23(1960), 787

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PAN Wu-Ming, LIU Yong and QI Hui. MICROSCOPIC STUDY OF QUASI-ROTATIONAL BANDS IN DOUBLE-EVEN Sn NUCLEI[J]. Chinese Physics C, 1990, 14(1): 49-55.

PAN Wu-Ming, LIU Yong and QI Hui. MICROSCOPIC STUDY OF QUASI-ROTATIONAL BANDS IN DOUBLE-EVEN Sn NUCLEI[J]. Chinese Physics C, 1990, 14(1): 49-55. shu

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

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

MICROSCOPIC STUDY OF QUASI-ROTATIONAL BANDS IN DOUBLE-EVEN Sn NUCLEI

Corresponding author:PAN Wu-Ming,

Institute of Particle Physics,Hua-Zhong Normal University,Wuhan1 Department of Physics,Peking University

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1990-01-05

Abstract:Based on the boson expansion and the so-called Jancovici-Schiff substitution,and approach has been developed to study the microscopic foundation of the interacting boson model.In this work an extension of the approach is made,thus one is able to treat the excitations of such system in which several neutron bosons,a proton boson and a proton-hole boson exist.With the consideration of the proton two-particle excitations we have studied the intruder quasi-rotational bands in double-even Sn nuclei.The Calculated results are compared with experiment and some features of the configuration mixture are discussed.