? -ray spectroscopy of low-lying excited states and shape competition in Os 194
? -ray spectroscopy of low-lying excited states and shape competition in Os 194
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DOI：
10.1103/physrevc.95.024328
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发表时间：
2017
影响因子：
3.1
通讯作者：
Daniel T
中科院分区：
文献类型：
--
作者：
Daniel T
利用布加勒斯特IFIN-HH实验室提供的80 MeV束流，研究了丰中子核激发态的性质。从激发态的离散射线衰变已被测量使用混合HPGe阵列RoSPHERE。目前的工作确定了一些以前未报道的低的nonyrast状态，以及第一次测量的半衰期为302（50）ps的yrast状态。这相当于aW. u。和固有的四极形变。实验结果进行了比较与Hartree-Fock-Bogoliubov相互作用玻色子模型的计算和一致的减少在四极集体在Os同位素的中子数增加。
The properties of excited states in the neutron-rich nucleushave been investigated using thereaction with an 80 MeV beam provided by the IFIN-HH Laboratory, Bucharest. Discrete-ray decays from excited states have been measured using the hybrid HPGe-array RoSPHERE. The current work identifies a number of previously unreported low-lying nonyrast states inas well as the first measurement of the half-life of the yraststate of 302(50) ps. This is equivalent to aW.u. and intrinsic quadrupole deformation of. The experimental results are compared with Hartree-Fock-Bogoliubov–interacting-boson-model calculations and are consistent with a reduction in a quadrupole collectivity in Os isotopes with increasing neutron number.