High Spin States in Odd-Odd 160Tm Nucleus

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2008,（6）
• 页码范围: 1996-1999
• 页数: 4页
• 语种: 英文

摘要

High-spin states of 160 Tm are studied by the 146 Nd(19F, 5n) reaction at a beam energy of 102 MeV. The previously known лh11/2 ⊕vi13/2 yrast band and лh11/2 ⊕vh9/2 side band are confirmed. The level scheme is enriched and more low-lying levels are observed. A new side band is observed and assigned as the favoured signature partner of лd3/2⊕ vi13/2. The spin of this band is assigned with the energy level systematics. It is pointed out that the B(M1) / B(E2) ratios increase rapidly at the high frequency approaching the second crossing in the лh11/2 vi13/2 band, which is closely related to the alignment gain of the aligned i13/2 quasineutron.