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American Physical Society, Physical Review C, 6(94)

DOI: 10.1103/physrevc.94.064322

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μs isomers of Nd158,160

Journal article published in 2016 by E. Ideguchi, G. S. Simpson, R. Yokoyama, M.-N. Tanaka, S. Nishimura, P. Doornenbal, G. Lorusso, P.-A. Söderström, T. Sumikama, J. Wu ORCID, Z. Y. Xu ORCID, N. Aoi, H. Baba ORCID, F. L. Bello Garrote, G. Benzoni and other authors.
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This paper is available in a repository.

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Abstract

The neutron-rich nuclei Nd158,160 have been studied via delayed γ-ray spectroscopy of μs isomeric states at the RIBF facility, RIKEN. These nuclei were produced following the projectile fission of a 345 AMeVU238 beam and delayed γ rays were detected by the EURICA cluster Ge array. The isomeric states have measured half-lives of 339(20) ns and 1.63(21) μs for Nd158 and Nd160, respectively. From the observed γ decays and the systematics of levels in the neighboring Nd isotopes first level schemes were constructed for these nuclei. The isomeric states of Nd158,160 have been assigned spins of (6-) and (4-), with proposed ν5/2[523] - ν7/2[633] and ν1/2[521] - ν7/2[633] configurations, respectively. © 2016 American Physical Society.