Level Inversion and the Mean Field in <SUP>11</SUP>Be

GAO Zao-Chun; CHEN Yong-Shou

近期发现有不法分子冒充我刊与作者联系，借此进行欺诈等不法行为，请广大作者加以鉴别，如遇诈骗行为，请第一时间与我刊编辑部联系确认（《中国物理C》（英文）编辑部电话：010-88235947,010-88236950），并作报警处理。

本刊再次郑重声明：

（1）本刊官方网址为cpc.ihep.ac.cn和https://iopscience.iop.org/journal/1674-1137

（2）本刊采编系统作者中心是投稿的唯一路径，该系统为ScholarOne远程稿件采编系统，仅在本刊投稿网网址（https://mc03.manuscriptcentral.com/cpc）设有登录入口。本刊不接受其他方式的投稿，如打印稿投稿、E-mail信箱投稿等，若以此种方式接收投稿均为假冒。

（3）所有投稿均需经过严格的同行评议、编辑加工后方可发表，本刊不存在所谓的“编辑部内部征稿”。如果有人以“编辑部内部人员”名义帮助作者发稿，并收取发表费用，均为假冒。

《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 2003, Vol. 27> Issue(12) : 1100-1105

Level Inversion and the Mean Field in ¹¹Be

GAO Zao-Chun ^, ,
CHEN Yong-Shou

China Institute of Atomic Energy,Beijing 102413,China2 Institute of Theoretic Physics,CAS,Beijing 100080,China

Abstract
HTML
Reference
Related

PDF

Abstract：
The inversion of 2s_1/2 and 1p_1/2 levels occurred in the one-neutron halo nucleus,¹¹Be, is studied in detail. It is pointed out that, for neutron halo nuclei, such as ¹¹Be, the one neutron separation energy, S_n, and the depth of the last neutron in the potential well, D_g, should have quite different values. After the failure of the Woods-Saxon potential, we construct a new potential, called as Double modified-Woods-Saxon (DMWS) potential, to describe the mean field of ¹¹Be, which has been able perfectly to reproduce this level inversion phenomenon without the help of configuration mixing. It has been shown that the level inversion in the ¹¹Be may indicate that the halo nuclei have a quite different mean field in contrast to the stable ones.

References

[1]

. Tanihata I et al.Phys.Rev.Lett.,1985,55:2676;Phys.Lett.,1985,B160:3802. Tanihata I.J.Phys.,1996,G22:1573. Ozawa A et al.Nucl.Phys.,2001,A691:5994. Sagawa H .Phys.Lett.,1992,B286:7 5. ZHU Z Y ,SHEN W Q ,CAI Y H et al.Phys.Lett.,1994,B328:1 6. MENG J ,Ring P .Phys.Rev.Lett.,1996,77:39637. Deutsch J P et al.Phys.Lett.,1968,B28:1788. Millener D J ,Kurath D .Nucl.Phys.,1975,A225:3159. Otsuka T et al.Phys.Rev.Lett.,1993,70:1385 10. Descouvremont P .Nucl.Phys.,1997,A615:261 11. Mau N V .Nucl.Phys.,1995,A592:33 12. Nunes F M et al.Nucl.Phys.,1996,A596:171 13. Ragnarsson I et al.Nucl.Phys.,1981,A361:1 14. Sagawa H ,Yazaki K .Phys.Lett.,1990,B244:14915. Firestone R B .Table of isotopes(8th edition),1998 16. Millener D J et al.Phys.Rev.,1983,C28:49717. Butler P A ,Nazarewicz W .Rev.Mod.Phys.,1996,68:34918. Kanungo R ,Tanihata I,Ozawa A .Phys.Lett.,2001,B512:26119. Kanungo R et al.Nucl.Phys.,2000,A677:17120. Egelhof P et al.Prog.Part.Nucl.Phys.,2001,46:30721. Dudek J et al.J.Phys.,1979,G5:135922. Cwiok S et al.Comp.Phys.Comm.,1987,46:37923. Hamamoto I et al.Nucl.Phys.,2001,A683:25524. Nakamura T et al.Phys.Lett.,1994,B331:29625. Ozawa A et al.Phys.Rev.Lett.,2000,84:549326. Navin A et al.Phys.Rev.Lett.,2000,85:266

[1]	Jing Geng , Yi-Fei Niu , Wen-Hui Long . Unified mechanism behind the even-parity ground state and neutron halo of ¹¹Be. Chinese Physics C, 2023, 47(4): 044102. doi: 10.1088/1674-1137/acb7cd
[2]	H. Sadeghi , Sh. Nahidinejad , K. Bahraminejad . Structure of A=11 double-Λ hypernuclei studied withthree-body forces. Chinese Physics C, 2013, 37(5): 054101. doi: 10.1088/1674-1137/37/5/054101
[3]	WANG Shou-Yu , ZHANG Shuang-Quan , QI Bin , MENG Jie . πg_9/2⊙νh_11/2 doublet bands in A~100 mass region. Chinese Physics C, 2009, 33(S1): 37-39. doi: 10.1088/1674-1137/33/S1/012
[4]	WANG Hong-Wei , DUAN Li-Min , YUAN Xiao-Hua , FU Fen . The Study of Unbound Nuclei ¹¹N Resonance Energy Level. Chinese Physics C, 2006, 30(1): 18-21.
[5]	PEI Jun-Cen , XU Fu-Rong . Understanding of Halo Nucleus ¹¹Be with Skyrme-Hartree-Fock. Chinese Physics C, 2004, 28(S1): 72-74.
[6]	WANG Ning , LI Zhu-Xia . Study of Fusion Mechanism of Halo Nuclear ¹¹Be+²⁰⁸Pb by Applying QMD Model. Chinese Physics C, 2001, 25(5): 399-404.
[7]	YANG Bin , ZHANG Jing-Shang , SUN Xiu-Quan . Model Calculation and Analysis of n+¹¹B Reactions below 20MeV. Chinese Physics C, 2001, 25(12): 1171-1177.
[8]	Zhang Changhua , Gu Jinnan . Stucture of Nucleus ¹¹Be. Chinese Physics C, 1997, 21(3): 260-263.
[9]	Xing Zheng , Zeng Wenping , Chen Xingqu , Sun Xiangfu , Liu Zhong . Studies of πh_11/2 Bands in Odd-A^117—125Cs Nuclei. Chinese Physics C, 1996, 20(7): 639-643.
[10]	Zhang Xiaodong , Ge Lingxiao . Study of ¹¹Li-Induced Reactions via QMD Model. Chinese Physics C, 1996, 20(3): 270-276.
[11]	Ren Zhongzhou . Further Studies on Halo Nuclei ¹¹Li,¹⁴Be and ¹⁷B. Chinese Physics C, 1995, 19(6): 562-566.
[12]	Dai Lianrong , Gu Jinnan . Studies of Some Exotic Properties of ^6—11Li Nuclei in the Framework of Shell Model. Chinese Physics C, 1995, 19(7): 646-652.
[13]	Ren Zhongzhou , F. Carstoiu . Further Studies on Halo Nuclei ¹¹Li, ¹⁴Be and ¹⁷B. Chinese Physics C, 1995, 19(S3): 313-318.
[14]	Duan Yiwu . Three-Body Model of ¹¹Li. Chinese Physics C, 1995, 19(1): 59-63.
[15]	Sun Xiangfu , Liu Zong , Zhou Xiaohong , Lei Xiangguo , Jin Hanjuan , Pan Qiangyan , Zhang Yuhu , Guo Yingxiang , Cheng Xinfeng , Luo Yixiao , Wen Shuxian , Yuan Guanjun , Li Guangsheng , Yang Chunxiang . Observation of a Possible πh_11/2 band of ¹¹⁷Cs. Chinese Physics C, 1994, 18(S1): 1-4.
[16]	Sun Xiangfu , Liu Zhong , Zhou Xiaohong , Lei Xiangguo , Jin Hanjuan , Pan Qiangyan , Zhang Yuhu , Guo Yingxiang , Cheng Xinfeng , Luo Yixiao , Wen Shuxian , Yuan Guanjun , Li Guangsheng , Yang Chunxiang . Measurement of the h_11/2 Band of ¹¹⁷Cs. Chinese Physics C, 1994, 18(S4): 341-344.
[17]	Duan Yiwu , Liu Guimin . Neutron Halo Structure of ¹¹Li. Chinese Physics C, 1994, 18(8): 736-740.
[18]	CAI Yan-Huang . The Soft Dipole Resonance Extremely Neutron Rich Nucleus ¹¹Li. Chinese Physics C, 1993, 17(9): 839-844.
[19]	REN Zhong-Zhou , XU Gong-Ou . A Three-Body Model of ¹¹Li,¹⁴Be and ¹⁷B. Chinese Physics C, 1991, 15(8): 737-741.
[20]	LIU Bao-Hua , LI Jia-Rong . MEAN-FIELD THEORY AND RESTORATION OF CHIRAL SYMMETRY. Chinese Physics C, 1988, 12(6): 848-851.

Access

Get Citation

GAO Zao-Chun and CHEN Yong-Shou. Level Inversion and the Mean Field in ¹¹Be[J]. Chinese Physics C, 2003, 27(12): 1100-1105.

GAO Zao-Chun and CHEN Yong-Shou. Level Inversion and the Mean Field in ¹¹Be[J]. Chinese Physics C, 2003, 27(12): 1100-1105. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2003-04-10
Revised: 1900-01-01

Article Metric

Article Views(3352)
PDF Downloads(711)
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, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Level Inversion and the Mean Field in ¹¹Be

GAO Zao-Chun ^,
CHEN Yong-Shou

Corresponding author: GAO Zao-Chun,

China Institute of Atomic Energy,Beijing 102413,China2 Institute of Theoretic Physics,CAS,Beijing 100080,China

Received Date: 2003-04-10
Accepted Date: 1900-01-01
Available Online: 2003-12-05

Abstract: The inversion of 2s_1/2 and 1p_1/2 levels occurred in the one-neutron halo nucleus,¹¹Be, is studied in detail. It is pointed out that, for neutron halo nuclei, such as ¹¹Be, the one neutron separation energy, S_n, and the depth of the last neutron in the potential well, D_g, should have quite different values. After the failure of the Woods-Saxon potential, we construct a new potential, called as Double modified-Woods-Saxon (DMWS) potential, to describe the mean field of ¹¹Be, which has been able perfectly to reproduce this level inversion phenomenon without the help of configuration mixing. It has been shown that the level inversion in the ¹¹Be may indicate that the halo nuclei have a quite different mean field in contrast to the stable ones.