Shape coexistence and the N=28 shell closure far from stability

被引：205

作者：

Sarazin, F

Savajols, H

Mittig, W

Nowacki, F

Orr, NA

Ren, Z

Roussel-Chomaz, P

Auger, G

Baiborodin, D

Belozyorov, AV

Borcea, C

Caurier, E

Dlouhy, Z

Gillibert, A

Lalleman, AS

Lewitowicz, M

Lukyanov, SM

de Oliveira, F

Penionzhkevich, YE

Ridikas, D

Sakuraï, W

Tarasov, O

de Vismes, A

机构：

[1] GANIL, F-14076 Caen 05, France

[2] Phys Theor Lab, F-67084 Strasbourg, France

[3] Inst Sci Mat & Rayonnement, LPC, F-14050 Caen, France

[4] Univ Caen, F-14050 Caen, France

[5] Acad Sci Czech Republ, Inst Nucl Phys, CZ-25068 Rez, Czech Republic

[6] Joint Inst Nucl Res, FLNR, Dubna 101000, Moscow, Russia

[7] IAP, Bucharest 76900, Romania

[8] Univ Strasbourg 1, IRES, F-67037 Strasbourg 2, France

[9] CEN Saclay, SPhN, DAPNIA, DSM,CEA, F-91191 Gif Sur Yvette, France

[10] RIKEN, Wako, Saitama 35101, Japan

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.84.5062

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The masses of 31 neutron-rich nuclei in the range A = 29-47 have been measured. The precision of 19 masses has been significantly improved and 12 masses were measured for the first time. The neutron-rich Cl, S, and P isotopes are seen to exhibit a change in shell structure around N = 28. Comparison with shell model and relativistic mean field calculations demonstrate that the observed effects arise from deformed prolate ground state configurations associated with shape coexistence. Evidence for shape coexistence is provided by the observation of an isomer in S-43.

引用

页码：5062 / 5065

页数：4

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