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



Kern, Ralph, Stegmann, Robert, Pietralla, Norbert, Rainovski, Georgi, Gaffney, Liam Paul ORCID: 0000-0002-2938-3696, Blazhev, Andrey, Boukhari, Amar, Cederkaell, Joakim, Cubiss, James, Djongolov, Martin
et al (show 28 more authors) (2018) Search for Isovector Valence-Shell Excitations in <SUP>140</SUP>Nd and <SUP>142</SUP>Sm via Coulomb excitation reactions of radioactive ion beams. In: International Conference on Nuclear Structure and Related Topics (NSRT18), 2018-6-3 - 2018-6-9, Burgas, Bulgaria.

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Abstract

<jats:p>Projectile Coulomb excitation experiments were performed at HIE-ISOLDE at CERN with the radioactive ion beams of <jats:sup>140</jats:sup>Nd and <jats:sup>142</jats:sup>Sm. Ions with an energy of 4:62 MeV/A were impinging on a 1.45 mg/cm<jats:sup>2</jats:sup> thick <jats:sup>208</jats:sup>Pb 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<jats:sup>+</jats:sup><jats:sub>3</jats:sub> → 2<jats:sup>+</jats:sup><jats:sub>1</jats:sub>) of <jats:sup>140</jats:sup>Nd and an upper limit for the case of <jats:sup>142</jats:sup>Sm are revealing the main fragments of the proton-neutron mixed-symmetry 2<jats:sup>+</jats:sup><jats:sub>1;ms</jats:sub> states.</jats:p>

Item Type: Conference or Workshop Item (Unspecified)
Depositing User: Symplectic Admin
Date Deposited: 09 May 2019 10:28
Last Modified: 11 Oct 2023 20:35
DOI: 10.1051/epjconf/201819403003
Open Access URL: https://doi.org/10.1051/epjconf/201819403003
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3040420