μs isomers of Nd158,160

E. Ideguchi et al.
Phys. Rev. C 94, 064322 – Published 27 December 2016

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.

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  • Received 8 November 2015
  • Revised 11 October 2016

DOI:https://doi.org/10.1103/PhysRevC.94.064322

©2016 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

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Vol. 94, Iss. 6 — December 2016

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