Abstract
A projectile Coulomb-excitation experiment was performed at the radioactive ion beam facility HIE-ISOLDE at CERN. The radioactive 140Nd and 142Sm ions were post accelerated to the energy of 4.62 MeV/A and impinged on a 1.45 mg/cm2-thin 208Pb target. The γ rays depopulating the Coulomb-excited states were recorded by the HPGe-array MINIBALL. The scattered charged particles were detected by a double-sided silicon strip detector in forward direction. Experimental γ-ray intensities were used for the determination of electromagnetic transition matrix elements. Preliminary results for the reduced transition strength of the B(M1 23+ to 21+)=0.35(19) μN2 of 140Nd and a first estimation for 142Sm have been deduced using the Coulomb-excitation calculation software GOSIA. The 23+ states of 140Nd and 142Sm show indications of being the main fragment of the proton-neutron mixed-symmetry 21, ms+ state.
Original language | English |
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Article number | 012027 |
Number of pages | 8 |
Journal | Journal of Physics: Conference Series |
Volume | 1555 |
Issue number | 1 |
DOIs | |
Publication status | Published - 28 May 2020 |
Event | 23rd International School on Nuclear Physics, Neutron Physics and Applications - Varna, Bulgaria Duration: 22 Sept 2019 → 28 Sept 2019 |
Bibliographical note
Funding Information:This work was supported by the BMBF grants Nos. 05P18RDCIA, 05P19RDFN1, 05P18RDFN9 and 05P18PKCIA, by the BgNSF grant DN08/23/2016, by grants from the U.K. Science and Technology Facilities Council, and the European Union within the Horizon 2020 research and innovation programme (ENSAR-2). The UWS group acknowledges financial support by the UK-STFC.
Publisher Copyright:
© 2020 Published under licence by IOP Publishing Ltd.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.