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Electrical and structural properties of InSb crystals irradiated with reactor neutrons

机译:反应堆中子辐照的InSb晶体的电和结构性质

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The structural transformations in InSb crystals irradiated with fast neutrons (E > 0.1 Me V) and the full spectrum of reactor neutrons with the ratio of the slow to fast neutron fluxes phi sn/phi(fn) are studied. Two ranges on the dose dependence can be selected according to the influence of fast neutron irradiation on the lattice parameter. Increase of the lattice parameter is not observed at the low flux (F-fn < 2.5 x 10(17) cm(-2)). As it follows from the X-ray diffuse scattering analysis, vacancy-type clusters dissociate in this range, and the number of small interstitial-type clusters simultaneously increases in this range. At F-fn > 2.5 x 10(17) cm(-2) the lattice parameter linearly increases with flux. A great number of small interstitial- and vacancy-type clusters, which can trap Sn impurity atoms, are formed. The heat treatment of irradiated samples up to 400 degrees C completely recovers the values of the lattice parameter. (c) 2005 Elsevier B.V. All rights reserved.
机译:研究了以快中子(E> 0.1 Me V)辐照的InSb晶体的结构转变和慢中子通量与快中子通量之比phi sn / phi(fn)的反应堆中子的全光谱。根据快速中子辐照对晶格参数的影响,可以选择两个剂量依赖性范围。在低通量下(F-fn <2.5 x 10(17)cm(-2))未观察到晶格参数的增加。从X射线扩散散射分析可知,空位型团簇在该范围内解离,小的间隙型团簇的数量在该范围内同时增加。当F-fn> 2.5 x 10(17)cm(-2)时,晶格参数随通量线性增加。形成了大量可以捕获Sn杂质原子的小间隙和空位型团簇。高达400摄氏度的辐照样品的热处理可以完全恢复晶格参数的值。 (c)2005 Elsevier B.V.保留所有权利。

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