2019 CAP Congress / Congrès de l'ACP 2019

2-7 June 2019
Simon Fraser University
America/Vancouver timezone
Welcome to the 2019 CAP Congress Program website! / Bienvenue au siteweb du programme du Congrès de l'ACP 2019 !

Beta decay spectroscopy of Europium-160

Jun 4, 2019, 9:45 AM
15m
SSB 7172 (Simon Fraser University)

SSB 7172

Simon Fraser University

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle) Nuclear Physics / Physique nucléaire (DNP-DPN)

Speaker

Daniel Yates (TRIUMF )

Description

Although the nuclear shell model does well to predict the structure of spherical nuclei, its ability to describe deformed nuclei far from shell closures is lacking. Models attempting to describe the structure of deformed nuclei, both from the microscopic and macroscopic perspective, require information on the excited energy levels of these nuclei in order to improve their predicting power. Incomplete and disagreeing information on the beta decay scheme of $^{160}$Eu to $^{160}$Gd has been previously published [1,2], so a comprehensive picture of this decay is not yet available. Recently published data [3] improves the decay scheme, though there are still many unplaced levels and gamma-ray transitions, and information on beta-feeding intensities is lacking. At TRIUMF-ISAC, $^{160}$Eu beta decay data was collected using the GRIFFIN (Gamma-Ray Infrastructure For Fundamental Investigations of Nuclei) array of high-purity germanium detectors coupled with LaBr$_3$ fast-timing detectors and a conversion electron spectrometer. Over 10 million decays were recorded, allowing a comprehensive analysis of the beta decay of $^{160}$Eu. New results from the ongoing analysis of this decay will be presented.
[1] N. A. Morcos et al., J. Inorg. Nucl. Chem. 35, 3659 (1973).
[2] J. M. D’Auria et al., Can. J. Phys. 51, 686 (1973).
[3] D. Hartley et al., Phys Rev. Lett. 120, 182502 (2018).

Primary author

Daniel Yates (TRIUMF )

Co-authors

Prof. Reiner Kruecken (TRIUMF) Dr Iris Dillmann (TRIUMF)