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

研究成果: ジャーナルへの寄稿会議記事査読


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.

ジャーナルProceedings of Science
出版ステータス出版済み - 2016
イベント26th International Nuclear Physics Conference, INPC 2016 - Adelaide, オーストラリア
継続期間: 9月 11 20169月 16 2016

!!!All Science Journal Classification (ASJC) codes

  • 一般


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