~（10）B的T=1态分子结构
Molecular Structures in T=1 states of 10B
摘要：
多中心（分子）结构可以在轻核中发挥重要作用。最近在10 Be中观测到了带头为6.179MeV的高形变转动带，并认为它具有奇异的α：2n：α组态。在10 B中寻找与10 Be中具有α：2n：α结构的态类似的具有α：pn：α双中心分子构型的态。利用~ 1H（9 Be，α）~ 6Li ~*（T=1，0+，3.56 MeV）反应，在激发能E=8.7-12.1 MeV范围内研究了~（10）B的T=1同量异位素类似态.使用R矩阵分析来提取在（p，α）激发函数中观察到的状态的参数。在10 B中已经确定了五个T=1状态。在8.9MeV的能量下观测到了已知的2+和3-态，并测量了它们的部分宽度。确定了三个高激发态的自旋宇称和部分宽度。我们的数据支持理论预测，2+状态在8.9 MeV（同量异位素类似物的7.54 MeV的状态在10 Be）是一个高度聚集的状态，可以被确定为一个成员的α：np：α旋转带。在11 MeV处有一个很宽的0+态，对应于纯α +6Li（0+，T=1）组态，它可能与~（12）C，~（18）O和~（20）Ne中发现的类似结构有关。
英文摘要：
Multi-center (molecular) structures can play an important role in light nuclei. The highly deformed rotational band in 10Be with band head at 6.179 MeV has been observed recently and suggested to have an exotic alpha:2n:alpha configuration. A search for states with alpha:pn:alpha two-center molecular configurations in 10B that are analogous to the states with alpha:2n:alpha structure in 10Be has been performed. The T=1 isobaric analog states in 10B were studied in the excitation energy range of E=8.7-12.1 MeV using the reaction 1H(9Be,alpha)6Li*(T=1, 0+, 3.56 MeV). An R-matrix analysis was used to extract parameters for the states observed in the (p,alpha) excitation function. Five T=1 states in 10B have been identified. The known 2+ and 3- states at 8.9 MeV have been observed and their partial widths have been measured. The spin-parities and partial widths for three higher lying states were determined. Our data support theoretical predictions that the 2+ state at 8.9 MeV (isobaric analog of the 7.54 MeV state in 10Be) is a highly clustered state and can be identified as a member of the alpha:np:alpha rotational band. The next member of this band, the 4+ state, has not been found. A very broad 0+ state at 11 MeV that corresponds to pure alpha+6Li(0+,T=1) configuration is suggested and it might be related to similar structures found in 12C, 18O and 20Ne.
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