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

Ralph Kern, Radostina Zidarova, Norbert Pietralla, Georgi Rainovski, Liam P. Gaffney, Andrey Blazhev, Amar Boukhari, Joakim Cederkäll, James G. Cubiss, Martin Djongolov, Christoph Fransen, Kalin Gladnishki, Efstathios Giannopoulos, Herbert Hess, Jan Jolie, Vasil Karayonchev, Levent Kaya, James M. Keatings, Diana Kocheva, Thorsten KröllOliver Möller, George G. O'Neill, 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

Research output: Contribution to journalConference articlepeer-review


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.

Original languageEnglish
Article number012027
Number of pages8
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 28 May 2020
Event23rd International School on Nuclear Physics, Neutron Physics and Applications - Varna, Bulgaria
Duration: 22 Sept 201928 Sept 2019

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.

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