摘要
通过^(109)Ag(^(19)F,3n)核反应布局了^(125)Ba核的激发态。使用带BGO康普顿抑制的高纯锗探测器阵列和常规在束γ实验技术,测量了它的高自旋态。建立在h(11/2)中子支壳上的负宇称带和建立在g(7/2)中子支壳上的正宇称带分别被延伸到了35/2^-和23/2^+态。负宇称带显示出明显的正负Signature劈裂,而正宇称带则几乎没有这种劈裂。负宇称正负Signature带均出现反弯,其反弯处转动频率与^(124)Ba晕带反弯频率相近。正宇称带也开始出现反弯迹象。
The high spin states of ^(125)Ba populated via the ^(109)Ag(^(19)F, 3n)reaction are me- asured by using a BGO Compton suppressed HPGe detector array. The negative and positive parity bands built respectively on the h_(11/2) and g_(7/2) neutron hole states are extended to 35/2^- and 23/2^+. Backbending occurs in both signature branches of the negative band at the frequencies close to that of the ^(124)Ba yrast band. An onset of bac- kbending in the positive band has been seen
出处
《高能物理与核物理》
CSCD
北大核心
1992年第1期62-67,共6页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金项目
