Abstract
The optical attenuation of fused silica glass impacted by high-speed micro-particle was studied. The high-speed impact test was carried out using a laser-driven flyer system which accelerated 16 μm-thick flyer to high speed of 3.7 km s−1. Scanning electron microscopy and optical microscopy were used to characterize the damage morphology of the impacted surface. The transmittance of the impacted glass samples was measured by means of UV/VIS double beam spectrophotometer. It was found that the transmittance of the impact region decreased due to the formation of structural defects such as crater, ejecta and micro-crack on the surface. A mathematic formula was established to explain the relationship between glass optical properties and the damaged modes, which aids to describe optical degradation and design long life optical equipments used in spacecrafts under space particles environment.
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