極低温冷凍機を用いた真空黒体炉による常温付近の分光放射率測定

概要

論文の詳細を見る
A new type of vacuum blackbody containing both a blackbody cavity and a solid material sample was fabricated using a cryogenic refrigerator. It was to construct a highly sensitive infrared spectral-radiation measurement system using a programmable temperature control device, a Fourier transform infrared spectrophotometer, and two mercury-cadmium-telluride (MCT) detectors. Evaluation showed that the temperature of the blackbody cavity wall was accurately set within ±0.2 K for 173-373K and that the nonlinearity of the system response output at 173-373K was within 0.8% with the proper use of the two MCT detectors. An emissivity comparison experiment using black paint (No. 1) showed that the proposed blackbody cavity method had a coincidence within 0.015 of a diffuse reflectance measuring method at 5-11.6 μm. For ceramics, the emissivity temperature dependence for alumina and zirconia at 273-373K was within ±0.06 and ±0.04, respectively.
社団法人照明学会の論文
2008-02-01