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 × v7/2 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|
|出版物ステータス||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 11 2016 → 9 16 2016
All Science Journal Classification (ASJC) codes