Abstract

Projectile Coulomb excitation experiments were performed at HIE-ISOLDE at CERN with the radioactive ion beams of 140Nd and 142Sm. Ions with an energy of 4:62 MeV/A were impinging on a 1.45 mg/cm2 thick 208Pb target. The γ-rays depopulating the Coulomb-excited states were recorded by the HPGe-array MINIBALL and scattered particles were detected by a double-sided silicon strip detector. Experimental intensities were used for the determination of electromagnetic transition matrix elements. A preliminary result of the B(M1; 2+3 → 2+1) of 140Nd and an upper limit for the case of 142Sm are revealing the main fragments of the proton-neutron mixed-symmetry 2+1;ms states.

Details

Title
Search for Isovector Valence-Shell Excitations in 140Nd and 142Sm via Coulomb excitation reactions of radioactive ion beams
Author
Kern, Ralph; Stegmann, Robert; Pietralla, Norbert; Rainovski, Georgi; Gaffney, Liam Paul; Blazhev, Andrey; Boukhari, Amar; Cederkäll, Joakim; Cubiss, James; Djongolov, Martin; Fransen, Christoph; Kalin Gladnishki; Giannopoulos, Efstathios; Hess, Herbert; Jolie, Jan; Karayonchev, Vasil; Kaya, Levent; Keatings, James; Kocheva, Diana; Kröll, Thorsten; Möller, Oliver; O'Neill, George; Pakarinen, Janne; Reiter, Peter; Rosiak, Dawid; Scheck, Marcus; Snall, Jacob; Söderström, Pär-Anders; Spagnoletti, Pietro; Stoyanova, Milena; Thiel, Stefan; Vogt, Andreas; Warr, Nigel; Welker, Andree; Werner, Volker; Wiederhold, Johannes; De Witte, Hilde; Zidarova, Radostina
Section
Nuclear spectroscopy
Publication year
2018
Publication date
2018
Publisher
EDP Sciences
ISSN
21016275
e-ISSN
2100014X
Source type
Conference Paper
Language of publication
English
ProQuest document ID
2285114218
Copyright
© 2018. This work is licensed under http://creativecommons.org/licenses/by/4.0 (the “License”). Notwithstanding the ProQuest Terms and conditions, you may use this content in accordance with the terms of the License.