When various materials are used as radiators for Cherenkov detectors registering electron fluxes with energies of tens to hundreds of keV, cathodoluminescence negatively affects the useful signal. Therefore, in the process of creating Cherenkov detectors, the search for materials with a low level of the cathodoluminescence is important. In this paper, the spectral and amplitude-time characteristics of the yttrium sesquioxide ceramics glow under irradiation with an electron beam with electron energy up to ~ 350 keV are experimentally studied. The experimental spectrum of the ceramics glow is compared with the calculated spectrum of Cherenkov radiation. It is shown that the main part of the ceramics radiation energy belongs to Cherenkov radiation, and the cathodoluminescence level is low. The conclusion on the suitability of yttrium sesquioxide ceramics as a material for radiators of Cherenkov detectors is made.

中文翻译：

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三氧化二钇陶瓷在电子束照射下发光

当使用各种材料作为 Cherenkov 探测器的辐射器记录能量为数十到数百 keV 的电子通量时，阴极发光会对有用信号产生负面影响。因此，在创建切伦科夫探测器的过程中，寻找具有低阴极发光水平的材料很重要。在本文中，实验研究了倍半氧化钇陶瓷在电子能量高达 ~ 350 keV 的电子束照射下发光的光谱和振幅-时间特性。陶瓷辉光的实验光谱与切伦科夫辐射的计算光谱进行了比较。结果表明，陶瓷辐射能量的主要部分属于切伦科夫辐射，阴极发光水平较低。