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Half-life of the15/2+state ofI135: A test ofE
Author(s) -
P. Spagnoletti,
G. S. Simpson,
R. Carroll,
J.-M. Régis,
Aurélien Blanc,
M. Jentschel,
U. Köster,
P. Mutti,
T. Söldner,
G. de France,
C. A. Ur,
W. Urban,
A. M. Bruce,
F. Drouet,
L. M. Fraile,
L. P. Gaffney,
D. Ghiţă,
S. Ilieva,
J. Jolie,
W. Korten,
T. Kröll,
C. Larijarni,
S. Lalkovski,
R. Lică,
H. Mach,
N. Mărginean,
V. Paziy,
Zs. Podolyák,
P. H. Regan,
M. Scheck,
N. Saed-Samii,
G. Thiamová,
C. Townsley,
A. Vancraeyenest,
V. Vedia,
A. Gargano,
P. Van Isacker
Publication year - 2017
Publication title -
physical review. c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.679
H-Index - 235
eISSN - 2469-9993
pISSN - 2469-9985
DOI - 10.1103/physrevc.95.021302
Subject(s) - physics , valence (chemistry) , atomic physics , quantum mechanics
International audienceThe half-life of the 15/2+1 state of the 3-valence-proton nucleus 135I has been measured to be 1.74(8) ns using the EXILL-FATIMA mixed array of Ge and LaBr3 detectors. The nuclei were produced following the cold neutron-induced fission of a 235U target at the PF1B beam line of the Institut Laue-Langevin. The extracted B(E2;15/2+→11/2+) value enabled a test of seniority relations for the first time between E2 transition rates. Large-scale shell-model calculations were performed for 134Te and 135I, and reinterpreted in a single-orbit approach. The results show that the two-body component of the E2 operator can be large whereas energy shifts due to the three-body component of the effective interaction are small

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