Abstract

Lithium–indium diselenide (LiInSe₂) is a new semiconductor material, sensitive to the thermal neutrons. LiInSe₂ compound was synthesized from Li (99.99%), In (99.999%) and Se (99.999%). The growth of LiInSe₂ single crystals was performed using the vertical option of Bridgman–Stockbarger method. The crystals were characterized using the electrical conductivity and optical spectroscopy methods. Stoichiometric composition of the LiInSe₂ was confirmed by the high precision chemical analysis, as well as by X-ray diffraction. Compact ²⁵²Cf neutron source with the activity 6.3 × 10⁵ n/s allowed measuring amplitude characteristics and defining the optimal operating voltage for neutron detection. Time-of-flight neutron spectra were measured at the fast pulsed research reactor IBR-2 at the Joint Institute for Nuclear Research.

中文翻译：

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LiInSe 2单晶用于热中子检测的研究

摘要

锂铟二硒化物（LiInSe ₂）是一种对热中子敏感的新型半导体材料。LiInSe ₂化合物由Li（99.99％），In（99.999％）和Se（99.999％）合成。LiInSe ₂单晶的生长是使用Bridgman–Stockbarger方法的垂直选项进行的。使用电导率和光谱学方法表征晶体。LiInSe _2的化学计量组成通过高精度化学分析以及X射线衍射确认。活度为6.3×10 ^5的紧凑型²⁵² Cf中子源n / s允许测量振幅特性并定义用于中子检测的最佳工作电压。飞行时间中子光谱是在联合核研究所的快速脉冲研究堆IBR-2上测量的。