Search for Isovector Valence-Shell Excitations in ¹⁴⁰Nd and ¹⁴²Sm via Coulomb excitation reactions of radioactive ion beams

Summary, in English

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.

• Author: Ralph Kern; Robert Stegmann; Norbert Pietralla; Georgi Rainovski; Liam Paul Gaffney; Andrey Blazhev; Amar Boukhari; Joakim Cederkäll; James Cubiss; Martin Djongolov; Christoph Fransen; Kalin Gladnishki; Efstathios Giannopoulos; Herbert Hess; Jan Jolie; Vasil Karayonchev; Levent Kaya; James Keatings; DIana Kocheva; Thorsten Kröll; Oliver Möller; George O'Neill; Janne Pakarinen; Peter Reiter; Dawid Rosiak; Marcus Scheck; Jacob Snall; Pär Anders Söderström; Pietro Spagnoletti; Milena Stoyanova; Stefan Thiel; Andreas Vogt; Nigel Warr; Andree Welker; Volker Werner; Johannes Wiederhold; Hilde De Witte; Radostina Zidarova
• Department/s: Nuclear physics; Department of Physics
• Publishing year: 2018-11-14
• Language: English
• Publication/Series: EPJ Web of Conferences
• Volume: 194
• Links: http://dx.doi.org/10.1051/epjconf/201819403003
• Document type: Conference paper
• Topic: Subatomic Physics
• Conference name: 2018 International Conference on Nuclear Structure and Related Topics, NSRT 2018
• Conference date: 2018-06-03 - 2018-06-09
• Conference place: Burgas, Bulgaria
• Status: Published
• ISBN/ISSN/Other: ISSN: 2101-6275