The spectra of Si-oil which contaminated the mirror were measured. The infrared absorption band and absorption coefficient of Si-oil were obtained. The experimental results demonstrate that the transmissivity of oil-film in the absorption band is exponentially decreased with the increase of the film thickness.
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裴云天.硅油对遥感仪器镜面污染的研究[J].红外与毫米波学报,1993,12(3):219~222]. PEI YUNTIAN. STUDY OF Si-OIL CONTAMINATION ON MIRROR OF REMOTE SENSING INSTRUMENT[J]. J. Infrared Millim. Waves,1993,12(3):219~222.]