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利用能量为170MeV的35Cl束流,通过157Gd(35Cl,4n)熔合蒸发反应研究了188Tl的高自旋态能级结构.依据实验结果建立了188Tl基于πh9/2(?)vi13/2组态的转动带.根据双奇Tl核能级结构的相似性,指定了188Tlπh9/2(?)vi13/2扁椭球转动带的自旋值.结果表明在188Tl中,πh9/2(?)vi13/2扁椭球转动带在低自旋区具有旋称反转性质.利用包含了质子-中子剩余相互作用的准粒子-转子模型,定性地解释了πh9/2(?)vi13/2扁椭球转动带的低自旋区旋称反转现象.
The high-spin state energy structure of 188Tl was studied by means of a fusion-reaction of 157Gd (35Cl, 4n) with 35Me beam with energy of 170MeV. Based on the experimental results, a 188Tl rotating belt based on πh9 / 2 (?) Vi13 / 2 configuration was established. According to the similarity of the two odd Tl nuclear energy levels, the spin value of 188Tlπh9 / 2 (?) Vi13 / 2 ellipsoid rotation band is specified. The results show that in 188Tl, πh9 / 2 (?) Vi13 / 2 oblate ellipsoid rotation band in the low spin region has a spin-inversion properties. The quasi-particle-rotor model with the proton-neutron residual interaction is used to qualitatively explain the spin inversion of the low spin region of πh9 / 2 (?) Vi13 / 2 oblate ellipsoid.