EPJ Web Conf.
Volume 194, 2018International Conference on Nuclear Structure and Related Topics (NSRT18)
|Number of page(s)||5|
|Published online||14 November 2018|
Search for Isovector Valence-Shell Excitations in 140Nd and 142Sm via Coulomb excitation reactions of radioactive ion beams
Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
2 Faculty of Physics, St. Kliment Ohridski University of Sofia, BG-1164 Sofia, Bulgaria
3 CERN, CH-1211 Genève, Switzerland
4 Institut für Kernphysik, Universität zu Köln, D-50937 Cologne, Germany
5 Department of Physics, Lund University, S-22100 Lund, Sweden
6 Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40351 Jyväskylä, Finland
7 University of the West of Scotland, High Street, Paisley PA1 2BE, United Kingdom
8 Department of Physics and Astronomy, University of the Western Cape, 7535 Bellville, South Africa
9 iThemba LABS, National Research Foundation, PO Box 722, 7129 Somerset West, South Africa
10 National Institute for Physics and Nuclear Engineering, R-77125 Bucharest-Magurele, Romania
11 Instituut voor Kern- en Strahlingsfysica, K.U. Leuven, B-3001 Leuven, Belgium
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Published online: 14 November 2018
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.
© The Authors, published by EDP Sciences, 2018
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