A new isomer with ms half-life was observed in 160Nd at RIBF, RIKEN Nishina Center by using in-flight fission of 238U beam and a cluster-type Ge detector array, EURICA. The experimental results and a PSM calculation indicate that the isomer in 160Nd is a 2 quasi-particle excitation of neutrons with a configuration of n1/2[521]x7/2[633] as the case in other N = 100 isotones. The E(4+)/E(2+) ratio of the ground-state band, 3.29, shows the 160Nd is well deformed and the ground band has a rotational nature. The 4- excitation of 160Nd showed an increase in energy by ~100 keV compared to that of 162Sm as predicted by the PSM calculation. A PSM calculation was performed by changing input beta_4 value and confirmed that the large hexadecupole deformation in Nd was responsible for the increase of the isomer energy.

The neutron-rich nuclei Nd-158,Nd-160 have been studied via delayed. gamma-ray spectroscopy of mu s isomeric states at the RIBF facility, RIKEN. These nuclei were produced following the projectile fission of a 345 AMeV U-238 beam and delayed gamma rays were detected by the EURICA cluster Ge array. The isomeric states have measured half-lives of 339(20) ns and 1.63(21) mu s for Nd-158 and Nd-160, respectively. From the observed. decays and the systematics of levels in the neighboring Nd isotopes first level schemes were constructed for these nuclei. The isomeric states of Nd-158,Nd-160 have been assigned spins of (6(-)) and (4(-)), with proposed nu 5/2[523]circle times nu 7/2[633] and nu 1/2[521]circle times nu 7/2[633] configurations, respectively.

The EURICA array has currently been in operation at RIKEN Nishina Center for one year.During this time several physics campaigns have been performed.In this paper we report about the