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基于等效光学常数的概念，分别采用MaxwellGarnet,Bruggeman理论分析了空隙率对炭粒等效光学常数的影响，并进而采用Bruggeman理论考察了内部孔隙均匀分布的球形炭颗粒的辐射特性，结果表明：大炭粒的吸收效率（发射率）因孔的存在而有显著的增强，小炭粒则反之。计算结果与物理分析相吻合。
Based on the concept of equivalent optical constants, the influence of void fraction on the equivalent optical constants of carbon particles was analyzed by MaxwellGarnet and Bruggeman theory respectively. Then the radiation characteristics of spherical carbon particles with uniform pore distribution were investigated by Bruggeman theory. The absorption efficiency (emissivity) of large carbon particles is markedly enhanced by the presence of pores, whereas the small carbon particles are by contrast. The calculation results are in good agreement with the physical analysis.