Coulomb Excitation of Proton-rich N = 80 Isotones at HIE-ISOLDE. (May 2020)

• Record Type: Journal Article
• Authors: Kern, Ralph; Zidarova, Radostina; Pietralla, Norbert; Rainovski, Georgi; Gaffney, Liam P.; Blazhev, Andrey; Boukhari, Amar; Cederkäll, Joakim; Cubiss, James G.; 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.; 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;
• Is Part Of: Journal of physics. Volume 1555(2020)
• Publication Date: 2020-05
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1555/1/012027
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: A projectile Coulomb-excitation experiment was performed at the radioactive ion beam facility HIE-ISOLDE at CERN. The radioactive 140 Nd and 142 Sm ions were post accelerated to the energy of 4.62 MeV/A and impinged on a 1.45 mg/cm 2 -thin 208 Pb 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 ( M 1 ; 2 3 + → 2 1 + ) = 0.35 ( 19 ) μ N 2 of 140 Nd and a first estimation for 142 Sm have been deduced using the Coulomb-excitation calculation software GOSIA. The 2 3 + states of 140 Nd and 142 Sm show indications of being the main fragment of the proton-neutron mixed-symmetry 2 1, ms + state.