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高能电子探测是空间环境探测的重要组成部分.由于高能电子穿透本领很强,常常采用厚探测器组成的粒子望远镜作为传感部件.由于不同能量电子将穿透不同深度,所以几何因子随入射电子能量变化.结合AE8模型,以中巴资源一号卫星01和02星的粒子监测器为例,讨论电子探头的几何因子问题.根据计算,低能档(0.5~1.0MeV)与高能档(≥2.0MeV)几何因子不同,分别为2.468和1.736cm2·sr.这与传统估算的几何因子为1.18cm2·sr有较大出入.伴随几何因子计算,讨论了探头的方向响应函数,可用来协助探头设计及方向测量分析.
High-energy electron detection is an important part of the space environment detection.As the high-energy electron penetrating ability is very strong, the particle telescope with thick detector is often used as the sensing component.Due to different energy electrons will penetrate different depths, so the geometric factor with the incident In the light of the AE8 model, the particle detector of CMB 01 and 02 is taken as an example to discuss the geometric factor of the electronic probe.According to the calculation, the low energy range (0.5 ~ 1.0MeV) 2.0MeV) with different geometrical factors of 2.468 and 1.736cm2 · sr respectively, which is quite different from the traditional geometric factor of 1.18cm2 · sr. With the geometric factor calculation, the probe’s directional response function is discussed and can be used to assist the probe Design and direction measurement and analysis.