Electromagnetic properties of neutron-rich nuclei adjacent to the Z=50 shell closure

被引:23
|
作者
Rejmund, M. [1 ]
Navin, A. [1 ]
Biswas, S. [2 ]
Lemasson, A. [1 ]
Caamano, M. [3 ]
Clement, E. [1 ]
Delaune, O. [1 ]
Farget, F. [1 ]
de France, G. [1 ]
Jacquot, B. [1 ]
Van Isacker, P. [1 ]
机构
[1] CEA DSM CNRS IN2P3, GANIL, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France
[2] Tata Inst Fundamental Res, DNAP, Homi Bhabha Rd, Bombay 400005, Maharashtra, India
[3] Univ Santiago de Compostela, E-15706 Santiago De Compostela, Spain
关键词
Isotopic identification; Large isospin and high angular momentum; Spin orbit partners; In-Sb isotopes; M1/E2; transitions; Seniority; MAGNETIC-MOMENTS; HIGH-SPIN; TRANSITION-PROBABILITIES; IN-49; ISOTOPES; SB ISOTOPES; STATES; PROTON; DIPOLE; DECAY; SPECTROMETER;
D O I
10.1016/j.physletb.2015.11.077
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Low-lying high-spin yrast states in the exotic odd-odd isotopes Sb124-128 (Z= 51) and In118-128 (Z= 49), studied for the first time, show a striking difference in their observed.-ray decay. With a single valence proton particle/hole occupying the g(7/2)/g(9/2) spin-orbit partners, dominant electric quadrupole transitions occur in Sb as opposed to magnetic dipole transitions in In. The observed properties are explained on the basis of general principles of symmetry and with large-scale shell-model calculations, and reveal novel aspects of the competition between the neutron-proton interaction and the like-nucleon pairing interaction. (C) 2015 The Authors. Published by Elsevier B.V.
引用
收藏
页码:86 / 90
页数:5
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