Effect of Pairing Correlation on the Ground State and Collective Excitations of Nucleus

CAO Li-Gang; MA Zhong-Yu

Chinese Physics C> 2005, Vol. 29> Issue(4) : 354-360

Effect of Pairing Correlation on the Ground State and Collective Excitations of Nucleus

CAO Li-Gang ^, ,
MA Zhong-Yu

Institute of High Energy Physics,CAS Beijing 1000492 China Institute of Atomic Energy,Beijing 1024133 China,CAS,and Technology World Laboratory,Beijing 1000804 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 7300005 Institute of Theoretical Physics,CAS,Beijing 100080

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Abstract：
The contribution of the resonant continuum to pairing correlations is properly treated in the RMF+BCS approximation with a constant pairing strength. The results show that the contribution of the proper treatment of the resonant continuum to pairing correlations for those nuclei close to neutron drip line is important. The quasiparticle relativistic random phase approximation (QRRPA) is applied to investigate the collective excitations of open shell nucleus. The numerical calculations are performed in the case of various isoscalar giant resonances of nucleus 120Sn. The calculated results show that the QRRPA approach could satisfactorily reproduce the experimental data of the energies of low-lying states.

References

[1]

Ring P. Prog. Part. Nucl. Phys. ,1996,37:1972 Dobaczewski J, Nazarewicz W, Wemer T R et al. Phys月iev.,1996,053:28093 MENG J, Ring P. Phys. Rev. Lett.,1996,77:39634 MENG J, Ring P. Phys. Rev. Lett.,1998,88:4b05 MENG J. Nucl. Phys.,1998,A635:36 LI Jun-Qing, MA Zhong-Yu, CHEN Bao-Qiu et al. Phys. Rep,2002, 065:0643057 Dobaczewski J, Flocard H, Treiner J. Nucl. Phys,1984,A422:1038 Sandulescu N, Liotta R J Wyss R. Phys. Lett.,1997,B394:69 Sandulescu N, Nguyen Van Giai, Liotta R J. Phys. Rev,2000, 061:061301(R)10 Del Estal M, Centelles M, Vinas X et al. Phys. Rev, 2001,C63:04432111 Gambhir Y K et al. Ann. Phys. ,1990,198:13212 Kamerdzhiev S, Liotta R J, Litvinova E et al. Phys. Rev. ,1998, 058:17213 Khan E,Nguyen Van Giai.Phys. Lett.,2000,8472:25314 Masayuki Matsuo. Nucl . Phys. , 2001, A696: 37115 Hagino K, Sagawa H . Nucl . Phys . , 2001, A695: 8216 Paar N, Ring P, Nik#353;i#233; T et al. Phys. Rev. , 2003, C67:03431217 MA Z Y. Commun. Theo. Phys. ,1999,32:49318 MA Z Y, Giai N V, Wandelt A et al. Nucl. Phys. , 2001, A686:17319 Ring P, MAZY , Giai N V et al . Nucl . Phys . , 2001, A694: 24920 MA Z Y, Wandelt A, Giai N V et al. Nucl. Phys. ,2002, A703:22221 CAOLG, MA Z Y. Phys. Rev. , 2002, 066:02431122 Sandulescu N , GENG L S , Toki H et al . Phys. Rev . , 2003 , C68: 05432323 Greiner W. Relativistic Quantum Mechanics-Wave Equation. Berlin:Springer-Verlag,199024 Ring P, Schuck P. The Nuclear Many-Ba卜Problem. Berlin: Springer-Verlag,198025 Lalazissis G A et al. Phys. Rev,1997,C55:54026 Kurasawa H et al . Nucl . Phys. ,1985 , A445:68527 L'Huillier M et al. Phys. Rev. ,1989, C39:202228 Shepard J R et al. Phys. Rev. ,1989, C40:232029 Serot B D, Walecka J D. Adv. Nucl. Phys. ,1986,16:130 MA Z Y, Giai N V Toki H et al. Phys. Rev.,1997 , C55: 2385 ; MA Z Y et al . Nucl . Phys，1997,A627:131 Vretenar D et al . Nucl . Phys,1999,A649:29c32 Lepr#234;tre A et al . Nucl . Phys . ,1974 , A219: 3933 Audi G et al . Nucl . Phys. ,1995 , A595:40934 Bryssinck J et al. Phys. Rev.,1999,059:1930

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[16]	KONG Ling-Jiang , LIU Ji-Feng . ON THE LOW-EXCITED STATES OF THE HYPERNUCLEUS ¹³C AND ¹⁷O. Chinese Physics C, 1990, 14(5): 435-443.
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[18]	ZHAO ZHI-ZHENG , SUN XI-JUN . LIFETIME MEASUREMENTS OF EXCITED STATES IN ⁷⁶Kr. Chinese Physics C, 1982, 6(2): 255-260.
[19]	LI GUANG-LIE , SHEN JIAN-PING , ZHANG ZONG-YE . SOME PROPERTIES OF THE HYPERNUCLEAR EXCITED STATES IN 1P SHELL. Chinese Physics C, 1978, 2(2): 168-173.
[20]	Zhang Zong-ye , Wang Ying-cai . THE AVERAGE FIELD OF THE ISOBAR △(1232) IN NUCLEI. Chinese Physics C, 1978, 2(1): 75-82.

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CAO Li-Gang and MA Zhong-Yu. Effect of Pairing Correlation on the Ground State and Collective Excitations of Nucleus[J]. Chinese Physics C, 2005, 29(4): 354-360.

CAO Li-Gang and MA Zhong-Yu. Effect of Pairing Correlation on the Ground State and Collective Excitations of Nucleus[J]. Chinese Physics C, 2005, 29(4): 354-360. shu

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Received: 2004-08-16
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

Effect of Pairing Correlation on the Ground State and Collective Excitations of Nucleus

Corresponding author: CAO Li-Gang,

Institute of High Energy Physics,CAS Beijing 1000492 China Institute of Atomic Energy,Beijing 1024133 China,CAS,and Technology World Laboratory,Beijing 1000804 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 7300005 Institute of Theoretical Physics,CAS,Beijing 100080

Received Date: 2004-08-16

Accepted Date: 1900-01-01

Available Online: 2005-04-05

Abstract: The contribution of the resonant continuum to pairing correlations is properly treated in the RMF+BCS approximation with a constant pairing strength. The results show that the contribution of the proper treatment of the resonant continuum to pairing correlations for those nuclei close to neutron drip line is important. The quasiparticle relativistic random phase approximation (QRRPA) is applied to investigate the collective excitations of open shell nucleus. The numerical calculations are performed in the case of various isoscalar giant resonances of nucleus 120Sn. The calculated results show that the QRRPA approach could satisfactorily reproduce the experimental data of the energies of low-lying states.

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Effect of Pairing Correlation on the Ground State and Collective Excitations of Nucleus

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