Isospin dependence of electromagnetic transition strengths among an isobaric triplet

A. Boso, S. A. Milne, M. A. Bentley, F. Recchia, S. M. Lenzi, D. Rudolph, M. Labiche, X. Pereira-Lopez, S. Afara, F. Ameil, T. Arici, S. Aydin, M. Axiotis, D. Barrientos, G. Benzoni, B. Birkenbach, A. J. Boston, H. C. Boston, P. Boutachkov, A. Bracco & 60 others A. M. Bruce, B. Bruyneel, B. Cederwall, E. Clement, M. L. Cortes, D. M. Cullen, P. Désesquelles, Zs Dombràdi, C. Domingo-Pardo, J. Eberth, C. Fahlander, M. Gelain, V. González, P. R. John, J. Gerl, P. Golubev, M. Górska, A. Gottardo, T. Grahn, L. Grassi, T. Habermann, L. J. Harkness-Brennan, T. W. Henry, H. Hess, I. Kojouharov, W. Korten, N. Lalović, M. Lettmann, C. Lizarazo, C. Louchart-Henning, R. Menegazzo, D. Mengoni, E. Merchan, C. Michelagnoli, B. Million, V. Modamio, T. Moeller, D. R. Napoli, J. Nyberg, B. S. Nara Singh, H. Pai, N. Pietralla, S. Pietri, Zs Podolyak, R. M. Perez Vidal, A. Pullia, D. Ralet, G. Rainovski, M. Reese, P. Reiter, M. D. Salsac, E. Sanchis, L. G. Sarmiento, H. Schaffner, L. M. Scruton, P. P. Singh, C. Stahl, S. Uthayakumaar, J. J. Valiente-Dobón, O. Wieland

Research output: Contribution to journalArticleResearchpeer-review

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.

Original languageEnglish
Article number134835
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume797
DOIs
Publication statusPublished - 13 Aug 2019

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linearity
electromagnetism
systematic errors
excitation
purity
quadrupoles
fine structure
methodology
valence
trends
life (durability)
nuclei
matrices
interactions

Bibliographical note

© 2019 TheAuthor(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAPU3.

Cite this

Boso, A. ; Milne, S. A. ; Bentley, M. A. ; Recchia, F. ; Lenzi, S. M. ; Rudolph, D. ; Labiche, M. ; Pereira-Lopez, X. ; Afara, S. ; Ameil, F. ; Arici, T. ; Aydin, S. ; Axiotis, M. ; Barrientos, D. ; Benzoni, G. ; Birkenbach, B. ; Boston, A. J. ; Boston, H. C. ; Boutachkov, P. ; Bracco, A. ; Bruce, A. M. ; Bruyneel, B. ; Cederwall, B. ; Clement, E. ; Cortes, M. L. ; Cullen, D. M. ; Désesquelles, P. ; Dombràdi, Zs ; Domingo-Pardo, C. ; Eberth, J. ; Fahlander, C. ; Gelain, M. ; González, V. ; John, P. R. ; Gerl, J. ; Golubev, P. ; Górska, M. ; Gottardo, A. ; Grahn, T. ; Grassi, L. ; Habermann, T. ; Harkness-Brennan, L. J. ; Henry, T. W. ; Hess, H. ; Kojouharov, I. ; Korten, W. ; Lalović, N. ; Lettmann, M. ; Lizarazo, C. ; Louchart-Henning, C. ; Menegazzo, R. ; Mengoni, D. ; Merchan, E. ; Michelagnoli, C. ; Million, B. ; Modamio, V. ; Moeller, T. ; Napoli, D. R. ; Nyberg, J. ; Nara Singh, B. S. ; Pai, H. ; Pietralla, N. ; Pietri, S. ; Podolyak, Zs ; Perez Vidal, R. M. ; Pullia, A. ; Ralet, D. ; Rainovski, G. ; Reese, M. ; Reiter, P. ; Salsac, M. D. ; Sanchis, E. ; Sarmiento, L. G. ; Schaffner, H. ; Scruton, L. M. ; Singh, P. P. ; Stahl, C. ; Uthayakumaar, S. ; Valiente-Dobón, J. J. ; Wieland, O. / 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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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 = "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 C. Lizarazo and C. Louchart-Henning and R. Menegazzo and D. Mengoni and E. Merchan and C. Michelagnoli and B. Million and V. Modamio and T. Moeller and Napoli, {D. R.} and J. Nyberg and {Nara Singh}, {B. S.} and H. Pai and N. Pietralla and S. Pietri and Zs Podolyak and {Perez Vidal}, {R. M.} and A. Pullia and D. Ralet and G. Rainovski and M. Reese and P. Reiter and Salsac, {M. D.} and E. Sanchis and Sarmiento, {L. G.} and H. Schaffner and Scruton, {L. M.} and Singh, {P. P.} and C. Stahl and S. Uthayakumaar and Valiente-Dob{\'o}n, {J. J.} and O. Wieland",
note = "{\circledC} 2019 TheAuthor(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAPU3.",
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Boso, A, Milne, SA, Bentley, MA, Recchia, F, Lenzi, SM, Rudolph, D, Labiche, M, Pereira-Lopez, X, Afara, S, Ameil, F, Arici, T, Aydin, S, Axiotis, M, Barrientos, D, Benzoni, G, Birkenbach, B, Boston, AJ, Boston, HC, Boutachkov, P, Bracco, A, Bruce, AM, Bruyneel, B, Cederwall, B, Clement, E, Cortes, ML, Cullen, DM, Désesquelles, P, Dombràdi, Z, Domingo-Pardo, C, Eberth, J, Fahlander, C, Gelain, M, González, V, John, PR, Gerl, J, Golubev, P, Górska, M, Gottardo, A, Grahn, T, Grassi, L, Habermann, T, Harkness-Brennan, LJ, Henry, TW, Hess, H, Kojouharov, I, Korten, W, Lalović, N, Lettmann, M, Lizarazo, C, Louchart-Henning, C, Menegazzo, R, Mengoni, D, Merchan, E, Michelagnoli, C, Million, B, Modamio, V, Moeller, T, Napoli, DR, Nyberg, J, Nara Singh, BS, Pai, H, Pietralla, N, Pietri, S, Podolyak, Z, Perez Vidal, RM, Pullia, A, Ralet, D, Rainovski, G, Reese, M, Reiter, P, Salsac, MD, Sanchis, E, Sarmiento, LG, Schaffner, H, Scruton, LM, Singh, PP, Stahl, C, Uthayakumaar, S, Valiente-Dobón, JJ & Wieland, O 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

Isospin dependence of electromagnetic transition strengths among an isobaric triplet. / Boso, A.; Milne, S. A.; Bentley, M. A.; Recchia, F.; Lenzi, S. M.; Rudolph, D.; Labiche, M.; Pereira-Lopez, X.; Afara, S.; Ameil, F.; Arici, T.; Aydin, S.; Axiotis, M.; Barrientos, D.; Benzoni, G.; Birkenbach, B.; Boston, A. J.; Boston, H. C.; Boutachkov, P.; Bracco, A.; Bruce, A. M.; Bruyneel, B.; Cederwall, B.; Clement, E.; Cortes, M. L.; Cullen, D. M.; Désesquelles, P.; Dombràdi, Zs; Domingo-Pardo, C.; Eberth, J.; Fahlander, C.; Gelain, M.; González, V.; John, P. R.; Gerl, J.; Golubev, P.; Górska, M.; Gottardo, A.; Grahn, T.; Grassi, L.; Habermann, T.; Harkness-Brennan, L. J.; Henry, T. W.; Hess, H.; Kojouharov, I.; Korten, W.; Lalović, N.; Lettmann, M.; Lizarazo, C.; Louchart-Henning, C.; Menegazzo, R.; Mengoni, D.; Merchan, E.; Michelagnoli, C.; Million, B.; Modamio, V.; Moeller, T.; Napoli, D. R.; Nyberg, J.; Nara Singh, B. S.; Pai, H.; Pietralla, N.; Pietri, S.; Podolyak, Zs; Perez Vidal, R. M.; Pullia, A.; Ralet, D.; Rainovski, G.; Reese, M.; Reiter, P.; Salsac, M. D.; Sanchis, E.; Sarmiento, L. G.; Schaffner, H.; Scruton, L. M.; Singh, P. P.; Stahl, C.; Uthayakumaar, S.; Valiente-Dobón, J. J.; Wieland, O.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 797, 134835, 13.08.2019.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

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

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 - Lizarazo, C.

AU - Louchart-Henning, C.

AU - Menegazzo, R.

AU - Mengoni, D.

AU - Merchan, E.

AU - Michelagnoli, C.

AU - Million, B.

AU - Modamio, V.

AU - Moeller, T.

AU - Napoli, D. R.

AU - Nyberg, J.

AU - Nara Singh, B. S.

AU - Pai, H.

AU - Pietralla, N.

AU - Pietri, S.

AU - Podolyak, Zs

AU - Perez Vidal, R. M.

AU - Pullia, A.

AU - Ralet, D.

AU - Rainovski, G.

AU - Reese, M.

AU - Reiter, P.

AU - Salsac, M. D.

AU - Sanchis, E.

AU - Sarmiento, L. G.

AU - Schaffner, H.

AU - Scruton, L. M.

AU - Singh, P. P.

AU - Stahl, C.

AU - Uthayakumaar, S.

AU - Valiente-Dobón, J. J.

AU - Wieland, O.

N1 - © 2019 TheAuthor(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAPU3.

PY - 2019/8/13

Y1 - 2019/8/13

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.

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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

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