Temperature and Wavelength Dependent Emissivity of a Shocked Surface: A First Experiment.

Poulsen, P. ; Hare, D. E.

Technical Information Center Oak Ridge Tennessee

关键词: Surface temperature;    Emissivity;    Wavelengths;    Shock;    Temperature;   

RP-ID  :  DE200515013347

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We have conducted an experiment in which the temperature and the wavelength dependent emissivity of a shocked surface has been measured. In the past, only the thermal emission from the shocked surface has been measured. The lack of knowledge of the emissivity as a function of wavelength leads to uncertainty in converting the measured emission spectrum into a surface temperature. We have developed a technique by which we are able to calculate both the emissivity of the shocked surface over a range of relevant wavelengths and the temperature of the surface. We use a multi-channel spectrometer in combination with a pulsed light source having a known spectrum of infrared radiation. Two separate techniques using a pulse of reflected radiation are employed and described.