Isospin dependence of electromagnetic transition strengths among an isobaric triplet

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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.

Detaljer

Författare
  • A. Boso
  • S. A. Milne
  • M. A. Bentley
  • F. Recchia
  • S. M. Lenzi
  • 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
  • M. Gelain
  • V. González
  • P. R. John
  • J. Gerl
  • 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
  • H. Schaffner
  • L. M. Scruton
  • P.P. Singh
  • C. Stahl
  • S. Uthayakumaar
  • J. J. Valiente-Dobón
  • O. Wieland
Enheter & grupper
Externa organisationer
  • University of Padova
  • National Physical Laboratory
  • University of York
  • Daresbury Laboratory
  • King Saud University
  • GSI Helmholtz Centre for Heavy Ion Research
  • Justus Liebig University Giessen
  • Aksaray University
  • Laboratori Nazionali di Legnaro
  • CERN
  • INFN Section of Milano
  • University of Cologne
  • University of Liverpool
  • University of Milan
  • University of Paris-Saclay
  • KTH Royal Institute of Technology
  • GANIL Grand Accelerateur National d'Ions Lourds
  • Technical University of Darmstadt
  • University of Manchester
  • Hungarian Academy of Sciences
  • Inst. de Physique Nuclaire d'Orsay
  • University of Jyväskylä
  • Istituto Nazionale di Fisica Nucleare, Sezione di Padova INFN
  • Uppsala universitet, Historiska institutionen
  • University of Surrey
  • University of Sofia
  • University of Valencia
  • Instituto de Física Corpuscular
  • Indian Institute of Technology Ropar, Rupnagar
  • University of Brighton
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Subatomär fysik
Originalspråkengelska
Artikelnummer134835
Antal sidor6
TidskriftPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volym797
StatusPublished - 2019 okt 10
PublikationskategoriForskning
Peer review utfördJa

Nedladdningar

Ingen tillgänglig data

Relaterad forskningsoutput

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 andraCollaboration, T. AGATA. & Collaboration, T. PPEC., 2016, I : Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. 806, s. 258-266 9 s.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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 andraReiter, P., Dirk Rudolph, Schaffner, H., Singh, P. P., Wieland, O., Wollersheim, H. J. & Collaboration, T. PPEC-AGATA., 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. (red.). EDP Sciences, Vol. 66. s. 02083 4 s.

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceeding

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 andraWollersheim, H. J., 2013, I : Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. 723, s. 55-66

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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