Identification of the neutron-rich isotope174Er |
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| Authors: | R. M. Chasteler J. M. Nitschke R. B. Firestone K. S. Vierinen P. A. Wilmarth A. A. Shihab-Eldin |
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| Affiliation: | 1. Nuclear Science Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road, 94720, Berkeley, CA, USA
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| Abstract: | The heaviest known erbium isotope, 3.3(2) min.174Er, has been identified using on- line isotope separation and by ß and γ- ray spectroscopy. Twelve γ rays were placed in a preliminary decay scheme. The mass of the new isotope was established by the separator and the Z was deduced from Tm K x ray coincident ß and γ rays. In addition, the heaviest known isotope of holmium171Ho was observed with a half-life of 49(5) s. |
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