Degradation and space charge accumulation characteristics in proton beam irradiated fluorinated insulating material

Insulation materials are used to keep the temperature inside the spacecraft constant. However, there is a possibility of causing a charge and discharge occurs operational abnormality by the charged particle on the orbit. In this study, we observed a space charge accumulation when high DC voltage is applied to the fluorinated insulating material which irradiated proton beam using PEA method. As a result, charge accumulation was observed in the proton beam irradiated sample. As a cause of this, irreversible change of molecular structure may occur due to proton beam irradiation and it may be caused by it, so structure analysis using XPS, FTIR is also done together and comprehensive consideration I went and report it.