Observation of the near-threshold intruder 0- resonance in 12Be

被引：14

作者：

Chen, J. ^{[1
,2
,3
]}

Wang, S. M. ^{[3
]}

Fortune, H. T. ^{[4
]}

Lou, J. L. ^{[1
,2
]}

Ye, Y. L. ^{[1
,2
]}

Li, Z. H. ^{[1
,2
]}

Michel, N. ^{[5
,6
]}

Li, J. G. ^{[1
,2
]}

Yuan, C. X. ^{[7
]}

Ge, Y. C. ^{[1
,2
]}

Li, Q. T. ^{[1
,2
]}

Hua, H. ^{[1
,2
]}

Jiang, D. X. ^{[1
,2
]}

Yang, X. F. ^{[1
,2
]}

Pang, D. Y. ^{[1
,2
]}

Xu, F. R. ^{[1
,2
]}

Zuo, W. ^{[5
,6
]}

Pei, J. C. ^{[1
,2
]}

Li, J. ^{[1
,2
]}

Jiang, W. ^{[1
,2
]}

Sun, Y. L. ^{[1
,2
]}

Zang, H. L. ^{[1
,2
]}

Aoi, N. ^{[8
]}

Ong, H. J. ^{[5
,8
]}

Ideguchi, E. ^{[8
]}

Ayyad, Y. ^{[3
,8
]}

Hatanaka, K. ^{[8
]}

Tran, D. T. ^{[8
]}

Bazin, D. ^{[3
]}

Lee, J. ^{[9
]}

Zhang, Y. N. ^{[10
]}

Wu, J. ^{[1
,2
,9
]}

Liu, H. N. ^{[1
,2
,9
]}

Wen, C. ^{[1
,2
,9
]}

Yamamoto, T. ^{[8
]}

Tanaka, M. ^{[8
]}

Suzuki, T. ^{[8
]}

机构：

[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China

[2] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[3] Michigan State Univ, FRIB NSCL Lab, E Lansing, MI 48824 USA

[4] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

[5] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China

[6] Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China

[7] Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Guangdong, Peoples R China

[8] Osaka Univ, Res Ctr Nucl Phys, Osaka 5670047, Japan

[9] RIKEN Inst Phys & Chem Res, 2-1 Hirosawa, Wako, Saitama 3510198, Japan

[10] Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA

来源：

PHYSICAL REVIEW C | 2021年 / 103卷 / 03期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

SHELL-MODEL; STATE; KNOCKOUT; LINE;

D O I：

10.1103/PhysRevC.103.L031302

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

A resonant state at 3.21(-0.04)(+0.12) MeV, located just above the one-neutron separation threshold, was observed for the first time in Be-12 from the Be-11(d, p) Be-12 one-neutron transfer reaction in inverse kinematics. This state is assigned a spin-parity of 0(-) according to the systematics of the level scheme of the N = 8 isotones and decay-width analysis. Gamow coupled-channel and Gamow shell-model calculations show the importance of the continuum coupling, which dramatically influences the excitation energy and ordering of low-lying states. Various exotic structures associated with cross-shell intruding configurations in Be-12 and in its isotonic nucleus Li-11 are comparably discussed.

引用

页数：6

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