1. Search for Isovector Valence-Shell Excitations in 140Nd and 142Sm via Coulomb excitation reactions of radioactive ion beams
- Author
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Kern Ralph, Stegmann Robert, Pietralla Norbert, Rainovski Georgi, Gaffney Liam Paul, Blazhev Andrey, Boukhari Amar, Cederkäll Joakim, Cubiss James, Djongolov Martin, Fransen Christoph, Gladnishki Kalin, 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, and Zidarova Radostina
- Subjects
Physics ,QC1-999 - 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.
- Published
- 2018
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