The Study of Aluminium Diffuser Calibration in the UV
LI Cong1,2,WANG Yong-mei1,ZHANG Zhong-mou1
1. Lab for Space Environment Exploration, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100080, China 2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China
Abstract：A bi-directional reflectance distribution function (BRDF) measurement setup in the ultraviolet spectral range was established. The BRDF of the aluminium diffusers at a given orientation was measured. The relative accuracy of the BRDF measurement is better than 2.5%. The hemispheric reflectance of the aluminium diffusers was measured in the wavelength range from 250 to 650 nm. It increases with the wavelength, and changes about 6% from 300 to 360 nm. It decreases with the time. Since the diffuser was made (about one year ago), from 250 to 300 nm, the peak decrease in the hemispheric reflectance can reach 2.6%, and the average decrease is 1.5%. From 300 to 360 nm, it has an average decrease of 0.9% decrease, and 0.8% when wavelength is longer than 360 nm.
Key words：Aluminium diffuser plate;Calibration;Bi-directional reflectance distribution function (BRDF);Hemispherical reflectance;Data processing;Error analysis
李聪1,2,王咏梅1,张仲谋1. 紫外光谱辐射定标中的漫反射板反射特性研究[J]. 光谱学与光谱分析, 2008, 28(04): 865-869.
LI Cong1,2,WANG Yong-mei1,ZHANG Zhong-mou1. The Study of Aluminium Diffuser Calibration in the UV. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2008, 28(04): 865-869.
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