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; 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; Th. 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

doi:10.1016/j.physletb.2019.134835

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. BraccoA. 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, Th. 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

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Abstract

Electric quadrupole matrix elements, M_p, for the J^π=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 M_p with respect to T_z. Pairs of nuclei in the T=1 triplet were studied using identical reaction mechanisms in order to control systematic errors. The M_p 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 M_p 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 language	English
Article number	134835
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	797
DOIs	https://doi.org/10.1016/j.physletb.2019.134835
Publication status	Published - 2019 Oct 10

Subject classification (UKÄ)

Subatomic Physics

Access to Document

10.1016/j.physletb.2019.134835

Boso-PLB-1-s2.0-S0370269319305490Final published version, 446 KBLicence: CC BY

2 Article
1 Paper in conference proceeding

Performance of the AGATA Gamma-ray Spectrometer in the PreSPEC Set-up at GSI
Lalovic, N., Louchart, C., Michelagnoli, C., Perez-Vidal, R. M., Ralet, D., Gerl, J., Rudolph, D., Arici, T., Bazzacco, D., Clement, E., Gadea, A., Kojouharov, I., Korichi, A., Labiche, M., Ljungvall, J., Lopez-Martens, A., Nyberg, J., Pietralla, N., Pietri, S. & Stezowski, O. & 2 others, Collaboration, T. A. & Collaboration, T. P., 2016, In: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. 806, p. 258-266 9 p.
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On the Road to FAIR: 1st Operation of AGATA in PreSPEC at GSI
Pietralla, N., Reese, M., Cortes, M. L., Ameil, F., Bazzacco, D., Bentley, M. A., Boutachkov, P., Domingo-Pardo, C., Gadea, A., Gerl, J., Goel, N., Golubev, P., Górska, M., Guastalla, G., Habermann, T., Kojouharov, I., Korten, W., Merchán, E., Pietri, S. & Ralet, D. & 7 others, Reiter, P., Rudolph, D., Schaffner, H., Singh, P. P., Wieland, O., Wollersheim, H. J. & Collaboration, T.P.-A., 2014, EPJ Web of Conferences. Lunardi, S., Bizzeti, P. G., Bucci, C., Chiari, M., Dainese, A., Di Nezza, P., Menegazzo, R., Nannini, A., Signorini, C. & Valiente-Dobon, J. J. (eds.). EDP Sciences, Vol. 66. p. 02083 4 p.
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The Lund-York-Cologne Calorimeter (LYCCA): Concept, Design and Prototype Developments for a FAIR-NUSTAR Detector System to Discriminate Relativistic Heavy-ion Reaction Products
Golubev, P., Wendt, A., Scruton, L., Taprogge, J., Rudolph, D., Reiter, P., Bentley, M. A., Avdeichikov, V., Boutachkov, P., Fox, S. P., Gerl, J., Goergen, C., Hoischen, R., Kurz, N., Singh, B. S. N., Pascovici, G., Pietri, S., Schaffner, H., Taylor, M. J. & Thiel, S. & 1 others, Wollersheim, H. J., 2013, In: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. 723, p. 55-66
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2 Active

FAIR-NUSTAR: HISPEC-DESPEC experiment & Super-FRS contributions
Rudolph, D. (PI), Golubev, P. (CoI) & Sarmiento Pico, L. (Researcher)
Swedish Research Council, Crafoord Foundation, The Royal Physiographic Society in Lund
2010/03/12 → 2030/12/31
Project: Research
Nuclear Structure at the Limits: Isotope-selective Spectroscopy
Rudolph, D. (PI), Fahlander, C. (CoI), Golubev, P. (CoI), Sarmiento Pico, L. (CoI), Cox, D. (Researcher), Hrabar, Y. (Research student), Såmark-Roth, A. (Research student), Forsberg, U. (Researcher), Lorenz, C. (Research student), Lalovic, N. (Researcher), Lalovic, N. (Research student), Forsberg, U. (Research student), Gellanki, J. (Research student), Hoischen, R. (Research student), Johansson, E. (Research student), Andersson, L.-L. (Research student), du Rietz, R. (Research student), Ekman, J. (Research student) & Andreoiu, C. (Research student)
Swedish Research Council
2002/01/01 → 2027/12/31
Project: Research

Platform for Advanced Radiaton Detectors
Golubev, P. (Manager)
Department of Physics
Infrastructure

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

@article{cbad1ab16e58438999132af8121e65b7,

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. Lalovi{\'c} 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 Th. 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 P.P. Singh and C. Stahl and S. Uthayakumaar and Valiente-Dob{\'o}n, {J. J.} and O. Wieland",

year = "2019",

month = oct,

day = "10",

doi = "10.1016/j.physletb.2019.134835",

language = "English",

volume = "797",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

}

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

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, Th.

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

AN - SCOPUS:85070683080

SN - 0370-2693

VL - 797

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 134835

ER -

Isospin dependence of electromagnetic transition strengths among an isobaric triplet

Abstract

Subject classification (UKÄ)

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Research output

Performance of the AGATA Gamma-ray Spectrometer in the PreSPEC Set-up at GSI

On the Road to FAIR: 1st Operation of AGATA in PreSPEC at GSI

The Lund-York-Cologne Calorimeter (LYCCA): Concept, Design and Prototype Developments for a FAIR-NUSTAR Detector System to Discriminate Relativistic Heavy-ion Reaction Products

Projects

FAIR-NUSTAR: HISPEC-DESPEC experiment & Super-FRS contributions

Nuclear Structure at the Limits: Isotope-selective Spectroscopy

Equipment

Platform for Advanced Radiaton Detectors

Cite this