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

Abstract

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.

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Item Type:	Article
Authors/Creators:	Kern, Ralph Zidarova, Radostina Pietralla, Norbert Rainovski, Georgi Gaffney, Liam P. Blazhev, Andrey Boukhari, Amar Cederkäll, Joakim Cubiss, James G. https://orcid.org/0000-0002-5076-8654 Djongolov, Martin Fransen, Christoph Gladnishki, Kalin Giannopoulos, Efstathios Hess, Herbert Jolie, Jan Karayonchev, Vasil Kaya, Levent Keatings, James M. Kocheva, Diana Kröll, Thorsten Möller, Oliver O'Neill, George G. (gon508@york.ac.uk) Pakarinen, Janne Reiter, Peter Rosiak, Dawid Scheck, Marcus Snall, Jacob Söderström, Pär Anders Spagnoletti, Pietro Stegmann, Robert Stoyanova, Milena Thiel, Stefan Vogt, Andreas Warr, Nigel Welker, Andree Werner, Volker Wiederhold, Johannes Witte, Hilde De
Copyright, Publisher and Additional Information:	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: Copyright 2020 Elsevier B.V., All rights reserved.
Dates:	Published: 28 May 2020
Institution:	The University of York
Academic Units:	The University of York > Faculty of Sciences (York) > Physics (York)
Depositing User:	Pure (York)
Date Deposited:	06 Apr 2021 13:50
Last Modified:	16 Oct 2024 17:28
Published Version:	https://doi.org/10.1088/1742-6596/1555/1/012027
Status:	Published
Refereed:	Yes
Identification Number:	10.1088/1742-6596/1555/1/012027
Related URLs:	http://www.scopus.com/inward/record.url?...
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:172840

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

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