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

*Corresponding author for this work

Research output: Contribution to journalArticle

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
Number of pages6
JournalPhysics Letters B
Volume797
Early online date13 Aug 2019
DOIs
Publication statusPublished - 10 Oct 2019
Externally publishedYes

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

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Boso, A., Milne, S. A., Bentley, M. A., Recchia, F., Lenzi, S. M., Rudolph, D., ... Wieland, O. (2019). Isospin dependence of electromagnetic transition strengths among an isobaric triplet. Physics Letters B, 797, [134835]. https://doi.org/10.1016/j.physletb.2019.134835
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 B. 2019 ; Vol. 797.
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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 S.A. Milne and M.A. Bentley and F. Recchia and S.M. Lenzi 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 A.J. Boston and H.C. Boston and P. Boutachkov and A. Bracco and A.M. Bruce and B. Bruyneel and B. Cederwall and E. Clement and M.L. Cortes and D.M. Cullen 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 P.R. John and J. Gerl and P. Golubev and M. G{\'o}rska and A. Gottardo and T. Grahn and L. Grassi and T. Habermann and L.J. Harkness-Brennan and T.W. Henry 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 D.R. Napoli 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 M.D. Salsac and E. Sanchis and L.G. Sarmiento and H. Schaffner and L.M. Scruton and P.P. Singh and C. Stahl and S. Uthayakumaar and J.J. Valiente-Dob{\'o}n and O. Wieland",
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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 B, 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 B, Vol. 797, 134835, 10.10.2019.

Research output: Contribution to journalArticle

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.

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.

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 -