High spin band structure in112Ru

被引：23

作者：

Department of Physics, Tsinghua University, Beijing 100084, China ^{[1
]}

不详 ^{[2
]}

不详 ^{[3
]}

不详 ^{[4
]}

机构：

[1] Department of Physics, Tsinghua University

[2] Department of Physics, Vanderbilt University, Nashville

[3] Lawrence Berkeley National Laboratory, Berkeley

[4] Department of Physics, Mississippi State University

来源：

Chin. Phys. Lett. | 2006年 / 2卷 / 328-331期

关键词：

Phonons;

D O I：

10.1088/0256-307X/23/2/015

中图分类号：

学科分类号：

摘要：

Levels in the neutron-rich 112Ru nucleus have been investigated by observing prompt gamma-rays from the spontaneous fission of 252Cf with the Gammasphere detector array. The ground-state band and the one-phonon γ-vibrational band have been confirmed and extended with spin up to 16 ℏ and 15 ℏ, respectively. The other two side bands, one proposed as two-phonon γ-vibrational band and the other proposed as two-quasiparticle band, have been observed for the first time. The total-Routhian-surface calculations show that rotational 112Ru nucleus has triaxial deformation with parameters β2 ∼ 0.27 and γ = -29°. The observed band crossing in the yrast band is due to the alignment of a pair of h11/2 neutrons according to the cranked shell model calculations. The possible configuration for the quasiparticle band has also been discussed. © 2005 Chinese Physical Society and IOP Publishing Ltd.

引用

页码：328 / 331

页数：3

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