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

Pietro Spagnoletti; G. S. Simpson; Robert Carroll; J. -M. Regis; A. Blanc; M. Jentschel; U. Koester; P. Mutti; T. Soldner; G. de France; C. Ur; W. Urban; A. Bruce; F. Drouet; L. M. Fraile; L. P. Gaffney; D.G. Ghita; S. Ilieva; J Jolie; W. Korten; Th. Kroell; C. Larijarni; S. Lalkovski; R. Lica; H. Mach; N. Marginean; V. Paziy; Zs. Podolyak; P. H. Regan; Marcus Scheck; N. Saed-Samii; G. Thiamova; C. Townsley; A. Vancraeyenest; V. Vedia; A. Gargano; P. Van Isacker

doi:10.1103/PhysRevC.95.021302

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

Pietro Spagnoletti, G. S. Simpson, Robert Carroll, J. -M. Regis, A. Blanc, M. Jentschel, U. Koester, P. Mutti, T. Soldner, G. de France, C. Ur, W. Urban, A. Bruce, F. Drouet, L. M. Fraile, L. P. Gaffney, D.G. Ghita, S. Ilieva, J Jolie, W. KortenTh. Kroell, C. Larijarni, S. Lalkovski, R. Lica, H. Mach, N. Marginean, V. Paziy, Zs. Podolyak, P. H. Regan, Marcus Scheck, N. Saed-Samii, G. Thiamova, C. Townsley, A. Vancraeyenest, V. Vedia, A. Gargano, P. Van Isacker

School of Computing, Engineering and Physical Sciences

Research output: Contribution to journal › Article › peer-review

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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.

Original language	English
Article number	021302(R)
Journal	Physical Review C
Volume	95
DOIs	https://doi.org/10.1103/PhysRevC.95.021302
Publication status	Published - 15 Feb 2017

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10.1103/PhysRevC.95.021302

2017 01 20 Spagnoletti et al Half-life acceptedAccepted author manuscript, 249 KBLicence: CC BY-NC-ND

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Spagnoletti, P., Simpson, G. S., Carroll, R., Regis, J. .-M., Blanc, A., Jentschel, M., Koester, U., Mutti, P., Soldner, T., de France, G., Ur, C., Urban, W., Bruce, A., Drouet, F., Fraile, L. M., Gaffney, L. P., Ghita, D. G., Ilieva, S., Jolie, J., ... Van Isacker, P. (2017). Half-life of the 15/2⁺ state of ¹³⁵I: A test of E2 seniority relations. Physical Review C, 95, Article 021302(R). https://doi.org/10.1103/PhysRevC.95.021302

@article{5213bf80e8a8491f99016a7936805c2a,

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

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.",

author = "Pietro Spagnoletti and Simpson, {G. S.} and Robert Carroll and Regis, {J. -M.} and A. Blanc and M. Jentschel and U. Koester and P. Mutti and T. Soldner and {de France}, G. and C. Ur and W. Urban and A. Bruce and F. Drouet and Fraile, {L. M.} and Gaffney, {L. P.} and D.G. Ghita and S. Ilieva and J Jolie and W. Korten and Th. Kroell and C. Larijarni and S. Lalkovski and R. Lica and H. Mach and N. Marginean and V. Paziy and Zs. Podolyak and Regan, {P. H.} and Marcus Scheck and N. Saed-Samii and G. Thiamova and C. Townsley and A. Vancraeyenest and V. Vedia and A. Gargano and {Van Isacker}, P.",

year = "2017",

month = feb,

day = "15",

doi = "10.1103/PhysRevC.95.021302",

language = "English",

volume = "95",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

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Spagnoletti, P, Simpson, GS, Carroll, R, Regis, J-M, Blanc, A, Jentschel, M, Koester, U, Mutti, P, Soldner, T, de France, G, Ur, C, Urban, W, Bruce, A, Drouet, F, Fraile, LM, Gaffney, LP, Ghita, DG, Ilieva, S, Jolie, J, Korten, W, Kroell, T, Larijarni, C, Lalkovski, S, Lica, R, Mach, H, Marginean, N, Paziy, V, Podolyak, Z, Regan, PH, Scheck, M, Saed-Samii, N, Thiamova, G, Townsley, C, Vancraeyenest, A, Vedia, V, Gargano, A & Van Isacker, P 2017, 'Half-life of the 15/2⁺ state of ¹³⁵I: A test of E2 seniority relations', Physical Review C, vol. 95, 021302(R). https://doi.org/10.1103/PhysRevC.95.021302

TY - JOUR

T1 - Half-life of the 15/2+ state of 135I

T2 - A test of E2 seniority relations

AU - Spagnoletti, Pietro

AU - Simpson, G. S.

AU - Carroll, Robert

AU - Regis, J. -M.

AU - Blanc, A.

AU - Jentschel, M.

AU - Koester, U.

AU - Mutti, P.

AU - Soldner, T.

AU - de France, G.

AU - Ur, C.

AU - Urban, W.

AU - Bruce, A.

AU - Drouet, F.

AU - Fraile, L. M.

AU - Gaffney, L. P.

AU - Ghita, D.G.

AU - Ilieva, S.

AU - Jolie, J

AU - Korten, W.

AU - Kroell, Th.

AU - Larijarni, C.

AU - Lalkovski, S.

AU - Lica, R.

AU - Mach, H.

AU - Marginean, N.

AU - Paziy, V.

AU - Podolyak, Zs.

AU - Regan, P. H.

AU - Scheck, Marcus

AU - Saed-Samii, N.

AU - Thiamova, G.

AU - Townsley, C.

AU - Vancraeyenest, A.

AU - Vedia, V.

AU - Gargano, A.

AU - Van Isacker, P.

PY - 2017/2/15

Y1 - 2017/2/15

N2 - 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.

AB - 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.

UR - https://doi.org/10.1103/PhysRevC.95.039901

U2 - 10.1103/PhysRevC.95.021302

DO - 10.1103/PhysRevC.95.021302

M3 - Article

SN - 2469-9985

VL - 95

JO - Physical Review C

JF - Physical Review C

M1 - 021302(R)

ER -

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

Abstract

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Publisher's note: Half-life of the 15/2⁺ state of ¹³⁵I: a test of E2 seniority relations [Phys. Rev. C 95, 021302(R) (2017)]

Cite this

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

Abstract

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Research output

Publisher's note: Half-life of the 15/2+ state of 135I: a test of E2 seniority relations [Phys. Rev. C 95, 021302(R) (2017)]

Cite this

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

Publisher's note: Half-life of the 15/2⁺ state of ¹³⁵I: a test of E2 seniority relations [Phys. Rev. C 95, 021302(R) (2017)]