First Observation of Yrast Band in Odd-Odd N=91 ¹⁶²Lu Nucleus

• 来源期刊: 原子核物理：英文版
• 学科: 物理学
• 关键词: YRAST BAND ODD-ODD NUCLEUS ¹⁶²Lu
• 年，卷（期）: 1995,（3）
• 页码范围: 250-253
• 页数: 4页
• 分类号: O4

摘要

【正】 High Spin states of the odd-odd ¹⁶²Lu nucleus have been studied via ¹⁴⁷Sm(¹⁹F,4nγ)reaction at90 MeV beam energy.Level scheme for yrast band based on π[h_11/2]v[i_13/2]configuration was estab-lished,for the first time,up to I^π=23^-.This band shows the signature inversion in energy before band-bending generally appeared in this mass region.It is stressed that the signature splitting in ¹⁶²Lu is biggerthan that in ¹⁶⁰Tm which could be understood in the framewrok of the cranked shell model if taking posi-tire γ-triaxiality into account.