基于掺锰镁铝氧化物和硅光电二极管的X射线探测器。

X-ray detector based on Mn doped MgAlO and Si photodiode.

作者信息

Katsumata Toru, Takeuchi Haruna, Komuro Shuji, Aizawa Hiroaki

机构信息

Faculty of Science and Engineering, Toyo University, 2100 Kujirai, Kawagoe, Saitama 350-8585, Japan.

出版信息

Rev Sci Instrum. 2018 Sep;89(9):095104. doi: 10.1063/1.5033504.

DOI:10.1063/1.5033504

PMID:30278765

Abstract

Luminescence properties of Mn doped MgAlO crystals connected with the Si PIN photodiode (PD) have been evaluated for X-ray detector applications. Mn doped MgAlO crystals emit green colored luminescence peaking at around λ = 520 nm with CuKα irradiation. The intensity of the output signal from Si PD increases linearly with the X-ray intensity of CuKα generated with the X-ray tube at a current from 2 mA to 40 mA. The intensity of the X-ray excited luminescence is strongest in the specimen with 3.0 mol. % Mn. Afterglow luminescence is weak in the specimen with 2.0 mol. % Mn. Mn doped MgAlO crystals connected with the Si PD is considered to be a useful X-ray detector.

摘要

已针对X射线探测器应用评估了与硅PIN光电二极管（PD）相连的掺锰MgAlO晶体的发光特性。掺锰MgAlO晶体在CuKα辐射下发射出峰值波长约为λ = 520 nm的绿色发光。来自硅PD的输出信号强度随X射线管在2 mA至40 mA电流下产生的CuKα的X射线强度呈线性增加。在含3.0摩尔％锰的样品中，X射线激发发光的强度最强。在含2.0摩尔％锰的样品中，余辉发光较弱。与硅PD相连的掺锰MgAlO晶体被认为是一种有用的X射线探测器。