Total radiant power emission from various diffuse wall cavity sources is calculated without approximation. In addition, a useful radiometric quantity, ∊o-d, the fraction of blackbody power received by a distant viewer, is precisely defined and calculated. Extensive tabulation of numerical results and tutorial background are included. A new method, faster and more accurate than traditional quadrature methods, for the numerical solution of integral-equations is described in an appendix. Results are applied to the practical problems of cavity design and analysis.
Raymond J. Chandos and Robert E. Chandos, "Radiometric Properties of Isothermal, Diffuse Wall Cavity Sources," Appl. Opt. 13, 2142-2152 (1974)