Role of hexadecupole deformation in the shape evolution of neutron-rich Nd isotopes

E. Ideguchi, G. Simpson, Mn Tanaka, S. Nishimura, P. Doornenbal, P. A. Söderström, G. Lorusso, Z. Y. Xu, J. Wu, T. Sumikama, N. Aoi, H. Baba, F. Bello, F. Browne, R. Daido, Y. Fang, N. Fukuda, G. Gey, S. Go, S. InabeT. Isobe, D. Kameda, K. Kobayashi, M. Kobayashi, T. Komatsubara, T. Kubo, I. Kuti, Z. Li, M. Matsushita, S. Michimasa, C. B. Moon, H. Nishibata, I. Nishizuka, A. Odahara, Z. Patel, S. Rice, E. Sahin, L. Sinclair, H. Suzuki, H. Takeda, J. Taprogge, Zs Vajta, H. Watanabe, A. Yagi

Research output: Contribution to journalConference articlepeer-review

Abstract

A new isomer with ms half-life was observed in 160Nd at RIBF, RIKEN Nishina Center by using in-flight fission of a 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 v1/2[521] × v7/2[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 Nd 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 β4 value and confirmed that the large hexadecupole deformation in Nd was responsible for the increase of the isomer energy.

Original languageEnglish
Article number015
JournalProceedings of Science
Volume2016-September
Publication statusPublished - 2016
Externally publishedYes
Event26th International Nuclear Physics Conference, INPC 2016 - Adelaide, Australia
Duration: Sep 11 2016Sep 16 2016

All Science Journal Classification (ASJC) codes

  • General

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