Humphreys T J, Kattawar G W, Young A T
Texas A&M University, College Station, Texas 77843, USA.
Appl Opt. 1984 Dec 1;23(23):4422-6. doi: 10.1364/ao.23.004422.
The inelastic part of Rayleigh scattering, which we previously showed can account for the partially filled line profiles of the blue sky observed at high spectral resolution, also explains the variation of polarization across a line profile. At lower spectral resolution, only the rotational part of the molecular scattering is needed to account for the polarization phenomena; translational (Brillouin) shifts can be neglected. Aerosol scattering, like the ground reflection, reduces the polarizations observed in the zenith sky by diluting the molecular (Rayleigh) component. Although the theory agrees well with existing data, more observations of high quality are needed for a thorough test of the Ring effect.
瑞利散射的非弹性部分，我们之前表明它可以解释在高光谱分辨率下观测到的蓝天部分填充的谱线轮廓，也解释了谱线轮廓上偏振的变化。在较低光谱分辨率下，仅分子散射的转动部分就足以解释偏振现象；平动（布里渊）频移可以忽略不计。气溶胶散射，与地面反射一样，通过稀释分子（瑞利）成分降低了天顶天空中观测到的偏振。尽管该理论与现有数据吻合良好，但仍需要更多高质量的观测来全面检验瑞利效应。
