22°晕的光强度和颜色分布

Distribution of Radial Intensity and Colors in the 22°Halo

本文首次提出了２２°晕的折射─衍射理论，计算了几种冰晶大小平均值和标准差σ情况下２２°晕的径向光强度分布和色品坐标，给出了相对光强度曲线和色品曲线。探讨了冰晶大小及其分布对２２°晕光强度和颜色分布的影响。理论计算的２２°晕光强度分布与实测结果基本相符。事实上，２２°晕是一种折射─衍射晕。

theory of refraction-diffraction on the 22°halo is presented in the paper. Radial intensity profile and chromaticity coordinates of the 22° halo are calculated for a few mean values a of and standard errors σ of various ice crystal size. The relative intensity curve and chromaticity curve of the 22° halos are showed that simulated results are in agreement with the measured results. The influence 'of the ice crystals size and distribution on intensity and colors of the 22° halo is discussed. We are convinced that 22°halo is a refraction-diffraction halo.