摘要
利用能量为 16 4— 180MeV的 3 5Cl束流 ,通过重离子核反应 14 9Sm(3 5Cl ,5n)研究了 179Au的高自旋态能级结构 .实验进行了γ射线的激发函数、X γ和γ γ t符合测量 .基于对实验测量结果的分析 ,首次建立了 179Au的 1 2 [6 6 0 ](πi13 2 )转动带 .结合已有的实验数据 ,着重讨论了奇AAu核中1 2 [6 6 0 ](πi13 2 )
High-spin states in 179Au have been studied experimentally using the 149Sm( 35Cl,5n) heavy-ion fusion-evaporation reaction at beam energies of 164—180MeV. Measurements of γ-ray excitation functions, X-γ coincidences and γ-γ-t coincidences were performed with 13 BGO(AC)HPGe and 3 LOAX detectors. Based on these measurements, a rotational band built on the 1/2[660](πi 13/2) Nilsson state has been established for the first time, and this band has been assigned to 179Au according to the systematic of level structure in odd-A Au nuclei. Properties of the 1/2[660](πi 13/2) band in odd-A Au nuclei are discussed with an emphasis on the band-head energy while changing the neutron number.
出处
《高能物理与核物理》
CSCD
北大核心
2004年第2期148-151,共4页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金 ( 10 0 0 5 0 12
10 0 2 5 5 2 5 )
国家重点基础研究发展规划 (TG2 0 0 0 0 7740 0 )资助~~
