Radiative properties of solid surfaces at low temperatures between 8 and 14 um

Jian Liu; Cai-gen Zhang

doi:10.1117/12.188691

17 October 1994 Radiative properties of solid surfaces at low temperatures between 8 and 14 μm

Jian Liu, Cai-gen Zhang

Proceedings Volume 2269, Infrared Technology XX; (1994) https://doi.org/10.1117/12.188691
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

In this paper, the radiative properties of Brown fused alumina are discussed within 8 - 14 micrometers and at temperatures of 40 degree(s)C, 50 degree(s)C, and 70 degree(s)C. The measurement principle and the formula for determination of the normal emissivity are also given. An IR emission (radiation) measurement instrument (Type IRE-1) is employed to carry out the experiments. A series of sandpapers made of Brown fused alumina with grain size (grit) ranging from 40 to micrometers to 250 micrometers are selected to do this research. It is indicated that, for Brown fused alumina, the normal spectral emissivity has a maximum value at about 8.55 micrometers in 8 - 14 micrometers waveband, and the emissivities decrease while the grain size decrease at a certain temperature and increase while the temperature goes up.

Citation Download Citation

Jian Liu and Cai-gen Zhang "Radiative properties of solid surfaces at low temperatures between 8 and 14 μm", Proc. SPIE 2269, Infrared Technology XX, (17 October 1994); https://doi.org/10.1117/12.188691

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