Half-life of the 15/2<SUP>+</SUP> state of <SUP>135</SUP>I: A test of <i>E</i>2 seniority relations



Spagnoletti, P, Simpson, GS, Carroll, R, Regis, J-M, Blanc, A, Jentschel, M, Koster, U, Mutti, P, Soldner, T, de France, G
et al (show 27 more authors) (2017) Half-life of the 15/2<SUP>+</SUP> state of <SUP>135</SUP>I: A test of <i>E</i>2 seniority relations. PHYSICAL REVIEW C, 95 (2). 021302-.

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Abstract

The half-life of the 15/21+ state of the 3-valence-proton nucleus I135 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 U235 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 Te134 and I135, 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.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5110 Synchrotrons and Accelerators, 51 Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 13 Jan 2020 08:53
Last Modified: 21 Jun 2024 10:58
DOI: 10.1103/PhysRevC.95.021302
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3070066