Measurement of excited states in 40Si and evidence for weakening of the N=28 shell gap

被引：46

作者：

Campbell, C. M. ^{[1
]}

Aoi, N.

Bazin, D.

Bowen, M. D.

Brown, B. A.

Cook, J. M.

Dinca, D. -C.

Gade, A.

Glasmacher, T.

Horoi, M.

Kanno, S.

Motobayashi, T.

Mueller, W. F.

Sakurai, H.

Starosta, K.

Suzuki, H.

Takeuchi, S.

Terry, J. R.

Yoneda, K.

Zwahlen, H.

机构：

[1] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA

[2] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[3] Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

[4] Cent Michigan Univ, Dept Phys, Mt Pleasant, MI 48859 USA

[5] Rikkyo Univ, Dept Phys, Tokyo 1718501, Japan

[6] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 11期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.97.112501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Excited states in Si-40 have been established by detecting gamma rays coincident with inelastic scattering and nucleon removal reactions on a liquid hydrogen target. The low excitation energy, 986(5) keV, of the 2(1)(+) state provides evidence of a weakening in the N=28 shell closure in a neutron-rich nucleus devoid of deformation-driving proton collectivity.

引用

页数：4

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