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Interplay of quasiparticle and vibrational excitations: First observation of isomeric states in Dy-168 and Dy-169

Zhang, G. X.; Watanabe, H.; Dracoulis, George; Kondev, Filip G.; Lane, Gregory; Regan, P. H.; Soderstrom, P.-A.; Walker, Philip M.; Yoshida, Kenichi; Kanaoka, H.; Korkulu, Z.; Lee, P. S.

Description

The neutron-rich dysprosium isotopes 168Dy102 and 169Dy103 have been investigated using the EURICA γ-ray spectrometer, following production via in-flight fission of a high-intensity uranium beam in conjunction with isotope separation through the BigRIPS separator at RIBF in RIKEN Nishina Center. For 168Dy, a previously unreported isomer with a half-life of 0.57(7) μs has been identified at an excitation energy of 1378 keV, and its presence affirmed independently using γ-γ-γ coincidence data...[Show more]

CollectionsANU Research Publications
Date published: 2019-10-22
Type: Journal article
URI: http://hdl.handle.net/1885/214096
Source: Physics Letters B
DOI: 10.1016/j.physletb.2019.135036
Access Rights: Open Access

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