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

Abstract
HTML
Reference
Related

PDF

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

[1]	HUA Wei , ZHOU Xiao-Hong , ZHANG Yu-Hu , GUO Ying-Xiang , LEI Xiang-Guo , XIE Cheng-Ying , SONG Li-Tao , WANG Hua-Lei . Study of Multi-Quasiparticle Excited States in ¹³⁹Ce. Chinese Physics C, 2007, 31(4): 357-360.
[2]	CHE Xing-Lai , ZHU Sheng-Jiang , LI Ming-Liang , YU Ying-Nan , CHEN Yong-Jing , DING Hui-Bo , XU Qiang , ZHU Li-Hua , WU Xiao-Guang , LI Guang-Sheng , LIU Ying , HE Chuang-Ye . Level Structure with High Excitation States in ¹³⁴Ba. Chinese Physics C, 2007, 31(7): 621-624.
[3]	ZHANG Jun-Shun , ZHANG Rui-Ping , LUO Yan-An , PAN Feng . SD Pair Shell Model: Influence of Pair Structure on the Collectivity of Low-lying States. Chinese Physics C, 2006, 30(8): 755-758.
[4]	Shi Yu , MA Yu-Gang , CHEN Jin-Geng , FANG De-Qing , WANG Kun , YAN Ting-Zhi , MA Chun-Wang , LIU Gui-Hua , TIAN Wen-Dong , WANG Hong-Wei , GUO Wei , MA Er-Jun , SU Qian- , . Exotic Structure of the Single Nucleon Excited States in the Medium Nuclei near the Stability Line. Chinese Physics C, 2006, 30(S2): 180-182.
[5]	GUO Bing , LI Zhi-Hong , LIU Wei-Ping , BAI Xi-Xiang . Study of Halo for the Ground State and Proton Widths for the First Two Excited States of ²⁷P. Chinese Physics C, 2006, 30(S2): 183-185.
[6]	LI Qiong , XIA Bing-Shu , LUO Yan-An , PAN Feng , NING Ping-Zhi . SD Pair Shell Model: Collectivity of Low-Lying State for Even-Even Pt Isotopes. Chinese Physics C, 2006, 30(9): 854-857.
[7]	ZHOU Feng-Qun , LUO Jun-Hua , YI Yan-Ling , TUO Fei , KONG Xiang-Zhong . A General Formula Used to Deduct the Effect of Excited State to Base State Was Deduced in Measurement of Cross Section of Nuclear Reaction. Chinese Physics C, 2005, 29(8): 741-744.
[8]	LIU Zu-Hua . Neutron Halo of the Excited States in ¹⁴C. Chinese Physics C, 2003, 27(2): 135-137.
[9]	LIU Zu-Hua , LIN Cheng-Jian , ZHANG Huan-Qiao , LI Zhi-Chang , ZHANG Jing-Shang , WU Yue-Wei , YANG Feng , RUAN Ming , LIU Jian-Cheng , LI Shu-Yuan , PENG Shao-Hua . Nuclear Asymptotic Normalization Coefficientsand Neutron Halo of the Excited States. Chinese Physics C, 2002, 26(7): 696-702.
[10]	LIU Zhong . A Test Experiment for the Study of Excited States in Z≈56, N≈80 Nuclei Via Deep Inelastic Reactions. Chinese Physics C, 2001, 25(9): 845-849.
[11]	Yu Xiaohan , Shi Shuanghui , Gu Jiahui , Liu Jingyi , Li Wenxin , Zeng Jiping , Tian Jiaqi , Li Yan , Zhou Jianzhong . Low-lying Level Structure of ⁸³Rb. Chinese Physics C, 1998, 22(12): 1082-1091.
[12]	Liu Zhong , Sun Xiangfu , Zhou Xiaohong , Lei Xiangguo , Jin Hanjuan , Guo Yingxiang , Pan Qiangyan , Zhang Yuhu , Chen Xinfeng , Luo Yixiao , Wen Shuxian , Yuan Guanjun , Li Guangsheng , Yang Chunxiang . Identification of Excited States in ¹¹⁷Xe. Chinese Physics C, 1995, 19(2): 106-109.
[13]	Xie Wenfang , Bao Chengguang . Analysis of Symmetry on the Ground and Low-Excited States of ¹²C. Chinese Physics C, 1995, 19(9): 848-851.
[14]	Wang Baolin . Analytical Study of Low-Lying States in the Transitional Regions. Chinese Physics C, 1994, 18(8): 724-729.
[15]	Zhang Dali , Liu Yuxin , Han Qizhi . An IBM2 Description on the Low-lying States of Even-even Xe Isotopes. Chinese Physics C, 1994, 18(12): 1130-1136.
[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.
[17]	ZHAO Zhi-Zheng , GUO Ying-Xiang , PAN Zong-You , XIAO Jian-Min , LEI Xiang-Guo , LIU Hong-Ye , SUN Xi-Jun . OBSERVATION OF EXCITED STATES IN ¹²⁸Ba. Chinese Physics C, 1986, 10(3): 363-366.
[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.

Access

Get Citation

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

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2004-08-16
Revised: 1900-01-01

Article Metric

Article Views(3202)
PDF Downloads(543)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, [email protected]

1.
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.

HTML

Reference (1)

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

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, [email protected]

Email This Article