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Half-life of the 15/2+ state of 135I: A test of E2 seniority relations

Spagnoletti, P, Simpson, GS, Carroll, R, Regis, J-M, Blanc, A, Jentschel, M, Koster, U, Mutti, P, Soldner, T, de France, G , Ur, CA, Urban, W, Bruce, AM, Drouet, F, Fraile, LM, Gaffney, LP, Ghit˘a, DG, Ilieva, S, Jolie, J, Korten, W, Kroll, T, Larijarni, C, Lalkovski, S, Lica, R, Mach, H, Marginean, N, Paziy, V, Podolyak, Zsolt, Regan, Patrick, Scheck, M, Saed-Samii, N, Thiamova, G, Townsley, C, Vancraeyenest, A, Vedia, V, Gargano, A and Van Isacker, P (2017) Half-life of the 15/2+ state of 135I: A test of E2 seniority relations Physical Review C: Nuclear Physics, 95, 021302.

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Abstract

The 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.

Item Type: Article
Subjects : Physics
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Spagnoletti, P
Simpson, GS
Carroll, R
Regis, J-M
Blanc, A
Jentschel, M
Koster, U
Mutti, P
Soldner, T
de France, G
Ur, CA
Urban, W
Bruce, AM
Drouet, F
Fraile, LM
Gaffney, LP
Ghit˘a, DG
Ilieva, S
Jolie, J
Korten, W
Kroll, T
Larijarni, C
Lalkovski, S
Lica, R
Mach, H
Marginean, N
Paziy, V
Podolyak, ZsoltZ.Podolyak@surrey.ac.uk
Regan, PatrickP.Regan@surrey.ac.uk
Scheck, M
Saed-Samii, N
Thiamova, G
Townsley, C
Vancraeyenest, A
Vedia, V
Gargano, A
Van Isacker, P
Date : 15 February 2017
Identification Number : 10.1103/PhysRevC.95.021302
Copyright Disclaimer : ©2017 American Physical Society
Depositing User : Symplectic Elements
Date Deposited : 22 Feb 2017 13:52
Last Modified : 31 Oct 2017 19:08
URI: http://epubs.surrey.ac.uk/id/eprint/813599

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