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Article
Title	Search for Isovector Valence-Shell Excitations in $^{140}$Nd and $^{142}$Sm via Coulomb excitation reactions of radioactive ion beams
Author(s)	Kern, Ralph (Darmstadt, Tech. U.) ; Stegmann, Robert (Darmstadt, Tech. U.) ; Pietralla, Norbert (Darmstadt, Tech. U.) ; Rainovski, Georgi (Sofiya U.) ; Gaffney, Liam Paul (CERN) ; Blazhev, Andrey (Cologne U.) ; Boukhari, Amar (CERN) ; Cederkäll, Joakim (CERN ; Lund U.) ; Cubiss, James (CERN) ; Djongolov, Martin (Sofiya U.) ; Fransen, Christoph (Cologne U.) ; Gladnishki, Kalin (Sofiya U.) ; Giannopoulos, Efstathios (CERN ; Jyvaskyla U.) ; Hess, Herbert (Cologne U.) ; Jolie, Jan (Cologne U.) ; Karayonchev, Vasil (Cologne U.) ; Kaya, Levent (Cologne U.) ; Keatings, James (West Scotland U.) ; Kocheva, Diana (Sofiya U.) ; Kröll, Thorsten (Darmstadt, Tech. U.) ; Möller, Oliver (Darmstadt, Tech. U.) ; O'Neill, George (Western Cape U. ; iThemba LABS) ; Pakarinen, Janne (Jyvaskyla U.) ; Reiter, Peter (Cologne U.) ; Rosiak, Dawid (Cologne U.) ; Scheck, Marcus (West Scotland U.) ; Snall, Jacob (Lund U.) ; Söderström, Pär-Anders (Darmstadt, Tech. U. ; Bucharest, IFIN-HH) ; Spagnoletti, Pietro (West Scotland U.) ; Stoyanova, Milena (Sofiya U.) ; Thiel, Stefan (Cologne U.) ; Vogt, Andreas (Cologne U.) ; Warr, Nigel (Cologne U.) ; Welker, Andree (CERN) ; Werner, Volker (Darmstadt, Tech. U.) ; Wiederhold, Johannes (Darmstadt, Tech. U.) ; De Witte, Hilde (Leuven U.) ; Zidarova, Radostina (Sofiya U.)
Publication	2018
Number of pages	5
In:	EPJ Web Conf. 194 (2018) 03003
In:	International Conference Nuclear Structure and Related Topics, Burgas, Bulgaria, 3 - 9 Jun 2018, pp.03003
DOI	10.1051/epjconf/201819403003
Subject category	Nuclear Physics - Experiment
Accelerator/Facility, Experiment	CERN ISOLDE
Abstract	Projectile Coulomb excitation experiments were performed at HIE-ISOLDE at CERN with the radioactive ion beams of $^{140}$Nd and $^{142}$Sm. Ions with an energy of 4.62 MeV/A were impinging on a 1.45 mg/cm$^2$ thick $^{208}$Pb target. The $\gamma$-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 $B(M1; 2^+_3 \rightarrow 2^+_1)$ of $^{140}$Nd and an upper limit for the case of $^{142}$Sm are revealing the main fragments of the proton-neutron mixed-symmetry $2^+_{1,ms}$ states.
Copyright/License	CC-BY-4.0

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