PARTICLE HOLE REPRESENTATIONS AND PHASE TRANSITION IN THE STRUCTURE OF THE ENERGY SPECTRUM FOR Xe ISOTOPES

WANG Yu-Cheng; LIU Yong; QI Hui

Chinese Physics C> 1990, Vol. 14> Issue(3) : 247-252

PARTICLE HOLE REPRESENTATIONS AND PHASE TRANSITION IN THE STRUCTURE OF THE ENERGY SPECTRUM FOR Xe ISOTOPES

Institute of Particle Physics,Huazhong Normal University,Wuhan1 Department of Physics,Peking University,Beijing

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Abstract：
Collective state space truncation causes a difference between particle and hole representations.By taking the midshell ¹²⁰Xe as an example,the problem as well as the dependence of the difference on parameters are studied within the framework of microscopic approach based on boson expansion and the MJS substitution.The phase transition in the energy spectrum structure from vibrational mode to γ——unstable mode for Xe isotopes is also studied.

References

[1]

A.Bohr and B. Mottelson, Nuclear structure Vol.l, W. A. Benjamin, Inc. New York, (1969) p.312[2] S.Pittel, P. D. Duval and R. Barrett, Phys, Rev., 25(1982), 2834.[3] 刘庸，博士论文，北京大学，1984.[4] Interacting Boson-Fermi System in Nuclei, ed. F. Iachello. (Plenum, New York, 1981).[5] T. S. Yang, Y. Liu and H.Qi. Nucl. Phys., A421(1984), 297c.[6] 杨泽森，刘庸，田晓岑，高能物理与核物理，6(1982)，472,[7] 杨泽森，高能物理与核物理，9(1985)，341,[8] T. Otsuka and N. Yoshida, JAER1-M Report, 85一094.[9] M.Saika and Y. Gono, Quasi-ground, quasi-beta and quasi-gamma bands, Preprint INS一J一160(July, 1979).[10] Nucl. Data Sheet, 41(1984), 225; 36(1982), 227; 38(1983), 191.[11] G.Puddu, O.Scholten and T.Otsuka, Nucl. Phys., A348(1980), 109.[12] O.Castanos,P. Federman. A.Frank and S. Pittel, Nucl. Phys., A379(I982), 61.

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WANG Yu-Cheng, LIU Yong and QI Hui. PARTICLE HOLE REPRESENTATIONS AND PHASE TRANSITION IN THE STRUCTURE OF THE ENERGY SPECTRUM FOR Xe ISOTOPES[J]. Chinese Physics C, 1990, 14(3): 247-252.

WANG Yu-Cheng, LIU Yong and QI Hui. PARTICLE HOLE REPRESENTATIONS AND PHASE TRANSITION IN THE STRUCTURE OF THE ENERGY SPECTRUM FOR Xe ISOTOPES[J]. Chinese Physics C, 1990, 14(3): 247-252. 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

PARTICLE HOLE REPRESENTATIONS AND PHASE TRANSITION IN THE STRUCTURE OF THE ENERGY SPECTRUM FOR Xe ISOTOPES

Corresponding author: WANG Yu-Cheng,

Institute of Particle Physics,Huazhong Normal University,Wuhan1 Department of Physics,Peking University,Beijing

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1990-03-05

Abstract: Collective state space truncation causes a difference between particle and hole representations.By taking the midshell ¹²⁰Xe as an example,the problem as well as the dependence of the difference on parameters are studied within the framework of microscopic approach based on boson expansion and the MJS substitution.The phase transition in the energy spectrum structure from vibrational mode to γ——unstable mode for Xe isotopes is also studied.