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Isospin dependence of electromagnetic transition strengths among an isobaric triplet

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Isospin dependence of electromagnetic transition strengths among an isobaric triplet. / AGATA@GSI Collaboration.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 797, 134835, 10.10.2019.

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Harvard

AGATA@GSI Collaboration 2019, 'Isospin dependence of electromagnetic transition strengths among an isobaric triplet', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 797, 134835. https://doi.org/10.1016/j.physletb.2019.134835

APA

AGATA@GSI Collaboration (2019). Isospin dependence of electromagnetic transition strengths among an isobaric triplet. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 797, [134835]. https://doi.org/10.1016/j.physletb.2019.134835

Vancouver

AGATA@GSI Collaboration. Isospin dependence of electromagnetic transition strengths among an isobaric triplet. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2019 Oct 10;797. 134835. https://doi.org/10.1016/j.physletb.2019.134835

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AGATA@GSI Collaboration. / Isospin dependence of electromagnetic transition strengths among an isobaric triplet. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2019 ; Vol. 797.

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@article{2c3a0e0f3db04b41ac2e8205bb0fe2f0,
title = "Isospin dependence of electromagnetic transition strengths among an isobaric triplet",
abstract = "Electric quadrupole matrix elements, Mp, for the Jπ=2+→0+, ΔT=0, T=1 transitions across the A=46 isobaric multiplet 46Cr-46V-46Ti have been measured at GSI with the FRS-LYCCA-AGATA setup. This allows direct insight into the isospin purity of the states of interest by testing the linearity of Mp with respect to Tz. Pairs of nuclei in the T=1 triplet were studied using identical reaction mechanisms in order to control systematic errors. The Mp values were obtained with two different methodologies: (i) a relativistic Coulomb excitation experiment was performed for 46Cr and 46Ti; (ii) a “stretched target” technique was adopted here, for the first time, for lifetime measurements in 46V and 46Ti. A constant value of Mp across the triplet has been observed. Shell-model calculations performed within the fp shell fail to reproduce this unexpected trend, pointing towards the need of a wider valence space. This result is confirmed by the good agreement with experimental data achieved with an interaction which allows excitations from the underlying sd shell. A test of the linearity rule for all published data on complete T=1 isospin triplets is presented.",
author = "{AGATA@GSI Collaboration} and A. Boso and Milne, {S. A.} and Bentley, {M. A.} and F. Recchia and Lenzi, {S. M.} and D. Rudolph and M. Labiche and X. Pereira-Lopez and S. Afara and F. Ameil and T. Arici and S. Aydin and M. Axiotis and D. Barrientos and G. Benzoni and B. Birkenbach and Boston, {A. J.} and Boston, {H. C.} and P. Boutachkov and A. Bracco and Bruce, {A. M.} and B. Bruyneel and B. Cederwall and E. Clement and Cortes, {M. L.} and Cullen, {D. M.} and P. D{\'e}sesquelles and Zs Dombr{\`a}di and C. Domingo-Pardo and J. Eberth and C. Fahlander and M. Gelain and V. Gonz{\'a}lez and John, {P. R.} and J. Gerl and P. Golubev and M. G{\'o}rska and A. Gottardo and T. Grahn and L. Grassi and T. Habermann and Harkness-Brennan, {L. J.} and Henry, {T. W.} and H. Hess and I. Kojouharov and W. Korten and N. Lalović and M. Lettmann and Scruton, {L. M.} and S. Uthayakumaar",
note = "{\circledC} 2019 The Author(s).",
year = "2019",
month = "10",
day = "10",
doi = "10.1016/j.physletb.2019.134835",
language = "English",
volume = "797",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "Elsevier",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Isospin dependence of electromagnetic transition strengths among an isobaric triplet

AU - AGATA@GSI Collaboration

AU - Boso, A.

AU - Milne, S. A.

AU - Bentley, M. A.

AU - Recchia, F.

AU - Lenzi, S. M.

AU - Rudolph, D.

AU - Labiche, M.

AU - Pereira-Lopez, X.

AU - Afara, S.

AU - Ameil, F.

AU - Arici, T.

AU - Aydin, S.

AU - Axiotis, M.

AU - Barrientos, D.

AU - Benzoni, G.

AU - Birkenbach, B.

AU - Boston, A. J.

AU - Boston, H. C.

AU - Boutachkov, P.

AU - Bracco, A.

AU - Bruce, A. M.

AU - Bruyneel, B.

AU - Cederwall, B.

AU - Clement, E.

AU - Cortes, M. L.

AU - Cullen, D. M.

AU - Désesquelles, P.

AU - Dombràdi, Zs

AU - Domingo-Pardo, C.

AU - Eberth, J.

AU - Fahlander, C.

AU - Gelain, M.

AU - González, V.

AU - John, P. R.

AU - Gerl, J.

AU - Golubev, P.

AU - Górska, M.

AU - Gottardo, A.

AU - Grahn, T.

AU - Grassi, L.

AU - Habermann, T.

AU - Harkness-Brennan, L. J.

AU - Henry, T. W.

AU - Hess, H.

AU - Kojouharov, I.

AU - Korten, W.

AU - Lalović, N.

AU - Lettmann, M.

AU - Scruton, L. M.

AU - Uthayakumaar, S.

N1 - © 2019 The Author(s).

PY - 2019/10/10

Y1 - 2019/10/10

N2 - Electric quadrupole matrix elements, Mp, for the Jπ=2+→0+, ΔT=0, T=1 transitions across the A=46 isobaric multiplet 46Cr-46V-46Ti have been measured at GSI with the FRS-LYCCA-AGATA setup. This allows direct insight into the isospin purity of the states of interest by testing the linearity of Mp with respect to Tz. Pairs of nuclei in the T=1 triplet were studied using identical reaction mechanisms in order to control systematic errors. The Mp values were obtained with two different methodologies: (i) a relativistic Coulomb excitation experiment was performed for 46Cr and 46Ti; (ii) a “stretched target” technique was adopted here, for the first time, for lifetime measurements in 46V and 46Ti. A constant value of Mp across the triplet has been observed. Shell-model calculations performed within the fp shell fail to reproduce this unexpected trend, pointing towards the need of a wider valence space. This result is confirmed by the good agreement with experimental data achieved with an interaction which allows excitations from the underlying sd shell. A test of the linearity rule for all published data on complete T=1 isospin triplets is presented.

AB - Electric quadrupole matrix elements, Mp, for the Jπ=2+→0+, ΔT=0, T=1 transitions across the A=46 isobaric multiplet 46Cr-46V-46Ti have been measured at GSI with the FRS-LYCCA-AGATA setup. This allows direct insight into the isospin purity of the states of interest by testing the linearity of Mp with respect to Tz. Pairs of nuclei in the T=1 triplet were studied using identical reaction mechanisms in order to control systematic errors. The Mp values were obtained with two different methodologies: (i) a relativistic Coulomb excitation experiment was performed for 46Cr and 46Ti; (ii) a “stretched target” technique was adopted here, for the first time, for lifetime measurements in 46V and 46Ti. A constant value of Mp across the triplet has been observed. Shell-model calculations performed within the fp shell fail to reproduce this unexpected trend, pointing towards the need of a wider valence space. This result is confirmed by the good agreement with experimental data achieved with an interaction which allows excitations from the underlying sd shell. A test of the linearity rule for all published data on complete T=1 isospin triplets is presented.

UR - http://www.scopus.com/inward/record.url?scp=85070683080&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2019.134835

DO - 10.1016/j.physletb.2019.134835

M3 - Article

VL - 797

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

M1 - 134835

ER -