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Coulomb Excitation of Proton-rich N = 80 Isotones at HIE-ISOLDE

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  • Ralph Kern
  • Radostina Zidarova
  • Norbert Pietralla
  • Georgi Rainovski
  • Liam P. Gaffney
  • Andrey Blazhev
  • Amar Boukhari
  • Joakim Cederkäll
  • Martin Djongolov
  • Christoph Fransen
  • Kalin Gladnishki
  • Efstathios Giannopoulos
  • Herbert Hess
  • Jan Jolie
  • Vasil Karayonchev
  • Levent Kaya
  • James M. Keatings
  • Diana Kocheva
  • Thorsten Kröll
  • Oliver Möller
  • Janne Pakarinen
  • Peter Reiter
  • Dawid Rosiak
  • Marcus Scheck
  • Jacob Snall
  • Pär Anders Söderström
  • Pietro Spagnoletti
  • Robert Stegmann
  • Milena Stoyanova
  • Stefan Thiel
  • Andreas Vogt
  • Nigel Warr
  • Andree Welker
  • Volker Werner
  • Johannes Wiederhold
  • Hilde De Witte


Publication details

JournalJournal of Physics: Conference Series
DatePublished - 28 May 2020
Issue number1
Number of pages8
Original languageEnglish


A projectile Coulomb-excitation experiment was performed at the radioactive ion beam facility HIE-ISOLDE at CERN. The radioactive 140Nd and 142Sm ions were post accelerated to the energy of 4.62 MeV/A and impinged on a 1.45 mg/cm2-thin 208Pb target. The γ rays depopulating the Coulomb-excited states were recorded by the HPGe-array MINIBALL. The scattered charged particles were detected by a double-sided silicon strip detector in forward direction. Experimental γ-ray intensities were used for the determination of electromagnetic transition matrix elements. Preliminary results for the reduced transition strength of the B(M1 23+ to 21+)=0.35(19) μN2 of 140Nd and a first estimation for 142Sm have been deduced using the Coulomb-excitation calculation software GOSIA. The 23+ states of 140Nd and 142Sm show indications of being the main fragment of the proton-neutron mixed-symmetry 21, ms+ state.

Bibliographical note

Funding Information:
This work was supported by the BMBF grants Nos. 05P18RDCIA, 05P19RDFN1, 05P18RDFN9 and 05P18PKCIA, by the BgNSF grant DN08/23/2016, by grants from the U.K. Science and Technology Facilities Council, and the European Union within the Horizon 2020 research and innovation programme (ENSAR-2). The UWS group acknowledges financial support by the UK-STFC.

Publisher Copyright:
© 2020 Published under licence by IOP Publishing Ltd.

Copyright 2020 Elsevier B.V., All rights reserved.

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