真空镓固定点黑体辐射源研制

宋健; 郝小鹏; 胡朝云; 周晶晶; 杨延龙; 刘洋; 谢臣瑜

doi:10.3969/j.issn.1000-1158.2022.02.04

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计量学报 ›› 2022, Vol. 43 ›› Issue (2) : 163-168. DOI: 10.3969/j.issn.1000-1158.2022.02.04

热学计量

真空镓固定点黑体辐射源研制

宋健¹,郝小鹏¹,胡朝云¹,周晶晶^1,2,杨延龙^1,3,刘洋¹,谢臣瑜¹

作者信息 +

Development of Vacuum Gallium Fixed-point Blackbody

SONG Jian¹,HAO Xiao-peng¹,HU Chao-yun¹,ZHOU Jing-jing^1,2,YANG Yan-long^1,3,LIU Yang¹,XIE Chen-yu¹

Author information +

文章历史 +

摘要

为满足红外遥感载荷实验室辐射定标需求,实现红外遥感辐射量值溯源到ITS-90国际温标,研制了真空镓固定点黑体辐射源。黑体腔开口直径为25mm,深度220mm,内部喷涂高发射率涂层,通过仿真计算黑体腔的发射率优于0.9999。在真空下测试了镓固定点相变坪台的复现性为4.4mK,坪台稳定性优于2mK。测量了镓固定点黑体辐射源工作时的亮度温度,其在8~16μm范围内亮度温度平均值为302.905K。研究了循环液体温度对镓相变坪台和黑体亮度温度的影响。对镓固定点黑体辐射源的不确定度来源进行了分析,其合成标准不确定度为0.014K。

Abstract

The vacuum gallium fixed-point blackbody radiation source is developed to meet the requirements of radiometric calibration on the infrared remote sensing payload and achieve effective traceability of radiation values to ITS-90. The diameter of the blackbody cavity opening is 25mm, the depth of the cavity is 220mm. The cavity is coated with high emissivity coating. The emissivity of the blackbody is calculated to be 0.9999. The repeatability of the gallium fixed-point phase change plateau is measured under vacuum, the result is 4.4 mK. The stability of the plateau is better than 2 mK. The radiance temperature of the blackbody is measured, and the average radiance temperature in the wavelength range of 8~16 μm is 302.905 K. the influence of the circulating fluid temperature on the plateau and the radiance temperature of blackbody is studied. The combined standard uncertainty of the gallium fixed-point blackbody is analyzed, the result is 0.014K.

导出引用

宋健,郝小鹏,胡朝云,周晶晶,杨延龙,刘洋,谢臣瑜. 真空镓固定点黑体辐射源研制[J]. 计量学报. 2022, 43(2): 163-168 https://doi.org/10.3969/j.issn.1000-1158.2022.02.04

SONG Jian,HAO Xiao-peng,HU Chao-yun,ZHOU Jing-jing,YANG Yan-long,LIU Yang,XIE Chen-yu. Development of Vacuum Gallium Fixed-point Blackbody[J]. Acta Metrologica Sinica. 2022, 43(2): 163-168 https://doi.org/10.3969/j.issn.1000-1158.2022.02.04

中图分类号： TB942

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