Spectroscopy on the proton drip-line: Probing the structure dependence of isospin nonconserving interactions

被引：16

作者：

Henderson, J. ^{[1
]}

Jenkins, D. G. ^{[1
]}

Kaneko, K. ^{[2
]}

Ruotsalainen, P. ^{[3
]}

Sarriguren, P. ^{[4
]}

Auranen, K. ^{[3
]}

Bentley, M. A. ^{[1
]}

Davies, P. J. ^{[1
]}

Gorgen, A. ^{[5
]}

Grahn, T. ^{[3
]}

Greenlees, P. T. ^{[3
]}

Hay, A. ^{[1
]}

Henry, T. W. ^{[1
]}

Herzan, A. ^{[3
]}

Jakobsson, U. ^{[3
]}

Julin, R. ^{[3
]}

Juutinen, S. ^{[3
]}

Konki, J. ^{[3
]}

Leino, M. ^{[3
]}

McPeake, C. ^{[6
]}

Milne, S. ^{[1
]}

Nichols, A. J. ^{[1
]}

Pakarinen, J. ^{[3
]}

Papadakis, P. ^{[3
]}

Partanen, J. ^{[3
]}

Peura, P. ^{[3
]}

Rahkila, P. ^{[3
]}

Sahin, E. ^{[5
]}

Sandzelius, M. ^{[3
]}

Saren, J. ^{[3
]}

Scholey, C. ^{[3
]}

Siciliano, M. ^{[3
,7
]}

Sinclair, L. ^{[1
]}

Sorri, J. ^{[3
]}

Stolze, S. ^{[3
]}

Uusitalo, J. ^{[3
]}

Wadsworth, R. ^{[1
]}

Zielinska, M. ^{[8
]}

机构：

[1] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England

[2] Kyushu Sangyo Univ, Dept Phys, Fukuoka 8138503, Japan

[3] Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland

[4] CSIC, Inst Estruct Mat, E-28006 Madrid, Spain

[5] Univ Oslo, Dept Phys, N-0316 Oslo, Norway

[6] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England

[7] Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy

[8] CEA Saclay, IRFU Serv Phys Nucl, F-91191 Gif Sur Yvette, France

来源：

PHYSICAL REVIEW C | 2014年 / 90卷 / 05期

基金：

欧盟第七框架计划; 英国科学技术设施理事会; 芬兰科学院;

关键词：

GE;

D O I：

10.1103/PhysRevC.90.051303

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：

The recoil-beta tagging technique was used to identify transitions associated with the decay of the 2(+) and, tentatively, the 4(+) excited states in Sr-74. Combining these results with published data for the A = 74 isobars, triplet energy differences (TEDs) have been extracted, the heaviest case for which these values have been evaluated. State-of-the-art shell-model calculations using the JUN45 interaction and incorporating a J = 0 isospin nonconserving (INC) interaction with an isotensor strength of 100 keV can reproduce the trend in the TED data, with particularly good agreement for the 2(+) state. This agreement for the TED data taken together with the fact that agreement has also been shown between shell-model calculations with the same strength of INC interaction in the f(7/2) shell and recently for A = 66 strongly suggests that such an interaction exists throughout the nuclear chart and cannot have a strong dependence on details of nuclear structure such as which nuclear orbitals are occupied. It also supports the hypothesis that only a J = 0 component of the INC interaction need be included to explain the observed TEDs.

引用

页数：4

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