带电粒子在材料中的剂量深度分布计算

航天器在轨道运行期间,会受到各种带电粒子的作用,其能量沉积在表面材料中,对表面材料的性能有较大的损伤。文章介绍了剂量深度计算程序,利用SRIM及ITS软件的计算结果,计算出了带电粒子在材料中的剂量深度分布,并对空间轨道实际环境下材料中的剂量深度分布进行了计算。利用这一程序,在“东四”热控涂层试验中进行了剂量深度分布拟合,计算了多种能量电子拟合试验下荆量深度分布与空间实际环境的比较,得出了相关的试验参数。

STUDY ON DOSE-DEPTH PROFILE CALCULATION OF CHARGED PARTICLES IN THE MATERIALS

The spacecraft will be affected by the charged particles when it is in the orbit.The properties degradation of spacecraft surface materials is caused by the charged particles which energy deposits in the materials.In this paper,a dose-depth profile calculation program is introduced.By using this program and the calculation datas processed by the softwares of SKIM and ITS 3.0,the dose-depth profile of charged particles in the materials is calculated and compared with it in space orbit environment.In the test of the thermal control coatings,a dose-depth profile fit is performed to acquire the test parameters.