CAJ | 학술논문

采用光学多道分析仪测量了溴钨灯和氙闪光灯的辐射光谱,给出了一种辐射测温的数据处理方法,即在Planck灰体模型假定的基础上,进一步考虑发射率ε与波长的多项式依赖关系以及辐射本底对实验结果的影响,建立相应的多光谱测温数据处理方法,并用溴钨灯和氙闪光灯的实测光谱对其进行了验证.结果表明:对于连续光谱且发射率逼近黑体,可以假定发射率为常量,按Planck灰体模型处理;对于非连续光谱,当电流密度不高时,发射率与波长依赖关系较强,可以根据发射率与依赖波长的多项式关系并结合0＜ε＜1限定按Planck灰体模型处理.
채용광학다도분석의측량료추오등화선섬광등적복사광보,급출료일충복사측온적수거처리방법,즉재Planck회체모형가정적기출상,진일보고필발사솔ε여파장적다항식의뢰관계이급복사본저대실험결과적영향,건립상응적다광보측온수거처리방법,병용추오등화선섬광등적실측광보대기진행료험증.결과표명:대우련속광보차발사솔핍근흑체,가이가정발사솔위상량,안Planck회체모형처리;대우비련속광보,당전류밀도불고시,발사솔여파장의뢰관계교강,가이근거발사솔여의뢰파장적다항식관계병결합0＜ε＜1한정안Planck회체모형처리.
The radiative spectra of WBr lamp and Xenon flash lamp are measured by Optical Multichannel Analyzer(OMA), and a method of radialization thermometry by transient multi-wavelength pyrometry is presented, that is considered the polynomial dependent relation between the spectral emissivity and wavelength as well as the background influence based on Planck radiant theory. The results show that for continuous spectra, the emissivity is assumably constant; and for non-continuous spectra, the emissivity relies on the multinomial wavelength equally combining 0＜ε＜1.