Effective emissivity of a cylindrical cavity with an inclined bottom: I. Isothermal cavity
Alexander V. Prokhorov, Leonard M. Hanssen · Metrologia · 2004
The Monte Carlo method is applied to the computation of the effective emissivity of a specular–diffuse isothermal blackbody cavity shaped by a cylindrical generatrix, a flat inclined bottom and a flat diaphragm. The dependences of the normal effective emissivity on the bottom inclination angle are studied for different cavity depths and various values of the diffuse component of the cavity wall reflectance. The distributions of the local normal effective emissivity over the cavity aperture and the dependences of the integrated effective emissivity on the distance between the aperture and the radiation detector are computed. The choice of optimal geometrical parameters for improving the radiometric performance of artificial blackbodies is discussed.