The influence of mediums' refractive index on scattering characteristics of abnormal dispersion scatterer

Based on the Mie scattering theory, we obtained that the calculation formula of scattering intensity I_s, Q_sca and Q_abs. And we calculated scattering characteristics of SiC particle in the abnormal dispersion region under different refractive index mediums. The results show that with the increasing of mediums' refractive index, the peak position of scattering intensity moves towards the direction of larger wavelength and the peak value of scattering intensity increases; the peak position of Q_sca and Q_ads move towards the direction of larger wavelength and the peak values of Q_sca and Q_abs decrease in the abnormal dispersion region. These could provide theoretical reference for the optical theory, experiment and application in the abnormal dispersion region. (authors)