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在用82Se束流和天然 Ba靶之间的深部非弹反应研究类靶余核激发态时,Ba靶严重氧化,88Sr的激发态由16O与82Se之间的融合蒸发反应产生.通过在束γ谱学方法测量了88 Sr的退激 γ射线,提取了γ跃迁的 DCO系数和角分布各向异性因子,对所有能级进行了自旋指定.在已知能级之上观测到了两个高自旋能级结构,自旋、激发能分别达到13h,8520keV和12h,7909keV.根据能级衰变特征和邻近N=50同中子素的能级结构系统性,对高自旋态的组态进行了讨论.
The Ba target is heavily oxidized when the quasi-target nuclear excited states are studied by deep non-bomb reaction between the 82Se beam and the native Ba target. The excited state of 88Sr results from the fusion evaporation between 16O and 82Se. The degenerated gamma rays of 88 Sr were measured by beam γ spectroscopy. The DCO coefficients and angular distribution anisotropy factors of γ transition were extracted and the spin assignments of all the energy levels were obtained. Two highly spin-level structures were observed above the known energy levels. The spin and excitation energies were 13h, 8520keV and 12h, 7909keV, respectively. According to the energy level decay characteristics and the energy structure of neighboring neutron neutrons, the configuration of high spin states is discussed.