CAJ | 학술논문

为了研究6H-SiC材料制作的pn结二极管探测器的辐照特性,采用蒙卡程序模拟研究了4.3和1.8 MeV能量的α粒子在辐照探测器中的物理过程.介绍了二极管探测器的工艺制作和物理参数,根据其结构建立了仿真模型,利用蒙卡程序进行了α粒子照射的仿真研究.研究结果直观地反映了α粒子在探测器中的输运情况.α粒子在探测器中的辐射效应主要是电离作用,电离产生的电子-空穴对形成一定的分布.给出了α粒子在探测器中的电离能量损失分布及二极管探测器的电荷收集效率表达式.
위료연구6H-SiC재료제작적pn결이겁관탐측기적복조특성,채용몽잡정서모의연구료4.3화1.8 MeV능량적α입자재복조탐측기중적물리과정.개소료이겁관탐측기적공예제작화물리삼수,근거기결구건립료방진모형,이용몽잡정서진행료α입자조사적방진연구.연구결과직관지반영료α입자재탐측기중적수운정황.α입자재탐측기중적복사효응주요시전리작용,전리산생적전자-공혈대형성일정적분포.급출료α입자재탐측기중적전리능량손실분포급이겁관탐측기적전하수집효솔표체식.
The mechanism is studied by Monte Carlo method while 1.8 MeV and 4.3 MeV alpha particles irradiating the pn junction 6H-SiC diode. In the first the process and parameters of the diode detector are introduced, and then a simulation model is established according to the structure of the detector. The research results reflect the whole transport process of alpha particles in the detector directly. The main effect of alpha particles is ionization, which produces electron-hole pairs with certain distribution. The energy loss distribution of ionization and the charge collection efficiency equation of the diode detector are provided in the end.