Discovery of the Shape Coexisting 0+ State in 32Mg by a Two Neutron Transfer Reaction

被引：153

作者：

Wimmer, K. ^{[1
]}

Kroell, T. ^{[1
]}

Kruecken, R. ^{[1
]}

Bildstein, V. ^{[1
]}

Gernhaeuser, R. ^{[1
]}

Bastin, B. ^{[2
]}

Bree, N. ^{[2
]}

Diriken, J. ^{[2
]}

Van Duppen, P. ^{[2
]}

Huyse, M. ^{[2
]}

Patronis, N. ^{[2
]}

Vermaelen, P. ^{[2
]}

Voulot, D. ^{[3
]}

de Walle, J. Van ^{[3
]}

Wenander, F. ^{[3
]}

Fraile, L. M. ^{[4
]}

Chapman, R. ^{[5
]}

Hadinia, B. ^{[5
]}

Orlandi, R. ^{[5
]}

Smith, J. F. ^{[5
]}

Lutter, R. ^{[6
]}

Thirolf, P. G. ^{[6
]}

Labiche, M. ^{[7
]}

Blazhev, A. ^{[8
]}

Kalkuehler, M. ^{[8
]}

Reiter, P. ^{[8
]}

Seidlitz, M. ^{[8
]}

Warr, N. ^{[8
]}

Macchiavelli, A. O. ^{[9
]}

Jeppesen, H. B. ^{[9
]}

Fiori, E. ^{[10
]}

Georgiev, G. ^{[10
]}

Schrieder, G. ^{[11
]}

Das Gupta, S. ^{[12
]}

Lo Bianco, G. ^{[12
]}

Nardelli, S. ^{[12
]}

Butterworth, J. ^{[13
]}

Johansen, J. ^{[14
]}

Riisager, K. ^{[14
]}

机构：

[1] Tech Univ Munich, Phys Dept E12, D-85748 Garching, Germany

[2] Katholieke Univ Leuven, Inst Kern Stralingsfys, B-3001 Louvain, Belgium

[3] CERN, CH-1211 Geneva 23, Switzerland

[4] Univ Complutense, Dept Fis Atom Mol & Nucl, Madrid 28049, Spain

[5] Univ W Scotland, Sch Sci & Engn, Paisley PA1 2BE, Renfrew, Scotland

[6] Univ Munich, Fak Phys, D-85748 Garching, Germany

[7] SERC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England

[8] Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany

[9] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[10] Univ Paris 11, CSNSM, IN2P3, CNRS, F-91405 Orsay, France

[11] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany

[12] Univ Camerino, Dipartimento Fis, I-62032 Camerino, Italy

[13] Univ York, Dept Phys, Nucl Phys Grp, York YO10 5DD, N Yorkshire, England

[14] Aarhus Univ, DK-8000 Aarhus C, Denmark

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 25期

基金：

美国能源部;

关键词：

SHELL-MODEL; BETA-DECAY; ISOTOPES;

D O I：

10.1103/PhysRevLett.105.252501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The "island of inversion'' nucleus Mg-32 has been studied by a (t, p) two neutron transfer reaction in inverse kinematics at REX-ISOLDE. The shape coexistent excited 0(+) state in Mg-32 has been identified by the characteristic angular distribution of the protons of the Delta L = 0 transfer. The excitation energy of 1058 keV is much lower than predicted by any theoretical model. The low gamma-ray intensity observed for the decay of this 0(+) state indicates a lifetime of more than 10 ns. Deduced spectroscopic amplitudes are compared with occupation numbers from shell-model calculations.

引用

页数：4

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