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 \(\rm {B}(M1; {2}_{3}^{+}\to {2}_{1}^{+})=0.35(19) {\mu }_{\rm {N}}^{2}\) of 140Nd and a first estimation for 142Sm have been deduced using the Coulomb-excitation calculation software GOSIA. The \({2}_{3}^{+}\) states of 140Nd and 142Sm show indications of being the main fragment of the proton-neutron mixed-symmetry \({2}_{1,\rm {ms}}^{+}\) state.

Details

Title
Coulomb Excitation of Proton-rich N = 80 Isotones at HIE-ISOLDE
Author
Kern, Ralph 1 ; Zidarova, Radostina 1 ; Pietralla, Norbert 1 ; Rainovski, Georgi 2 ; Gaffney, Liam P 3 ; Blazhev, Andrey 4 ; Boukhari, Amar 3 ; Cederkäll, Joakim 5 ; Cubiss, James G 6 ; Djongolov, Martin 2 ; Fransen, Christoph 4 ; Kalin Gladnishki 2 ; Giannopoulos, Efstathios 7 ; Hess, Herbert 4 ; Jolie, Jan 4 ; Karayonchev, Vasil 4 ; Kaya, Levent 4 ; Keatings, James M 8 ; Kocheva, Diana 2 ; Kröll, Thorsten 1 ; Möller, Oliver 1 ; George G O’Neill 9 ; Pakarinen, Janne 10 ; Reiter, Peter 4 ; Rosiak, Dawid 4 ; Scheck, Marcus 8 ; Snall, Jacob 11 ; Söderström, Pär-Anders 12 ; Spagnoletti, Pietro 8 ; Stegmann, Robert 1 ; Stoyanova, Milena 2 ; Thiel, Stefan 4 ; Vogt, Andreas 4 ; Warr, Nigel 4 ; Welker, Andree 3 ; Werner, Volker 1 ; Wiederhold, Johannes 1 ; De Witte, Hilde 13 

 Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany 
 Faculty of Physics, St. Kliment Ohridski University of Sofia, Sofia, Bulgaria 
 CERN, Geneva, Switzerland 
 Institüt für Kernphysik, Universität zu Köln, Cologne, Germany 
 CERN, Geneva, Switzerland; Department of Nuclear Physics, University of Lund, Lund, Sweden 
 Department of Physics, University of York, York, United Kingdom 
 CERN, Geneva, Switzerland; Department of Physics, University of Jyväskylä, Jyväskylä, Finland 
 CEPS, University of the West of Scotland, Paisley, United Kingdom 
 Department of Physics, University of Western Cape, Bellville, South Africa; iThemba LABS, National Research Foundation, Somerset West, South Africa 
10  Department of Physics, University of Jyväskylä, Jyväskylä, Finland 
11  Department of Nuclear Physics, University of Lund, Lund, Sweden 
12  ELI-NP, Magurele, Romania 
13  Instituut voor Kern- en Strahlingsfysica, K.U. Leuven, Leuven, Belgium 
Publication year
2020
Publication date
May 2020
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2557327412
Copyright
© 2020. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.