A Faster Approzimation of Forward Scattering by Gradient-indez Particles
By means of geometrical optics we present an approximation algorithm with which to accelerate the computation of scattering intensity distribution within a forward angular range (0°-60°) for gradient-index particles illuminated by acollimated ted incident beam. The incident angle of the reflected light is derived from the scattering angle to improve the approximation precision. This method proves effective for transparent particles with size parameters larger than 75 but fails to give good approximation results at scattering angles at which refractive rays are absent. With the given index model, the geometrical optics approximation is effective only for forward small angles, typically less than 10°or so when the refractive index difference of a particle is greater than a certain value.
Xiangzhen Li Xiange Han Renxian Li Huifen Jiang
Xidian University, 710071, China
国际会议
Progress in Electromagnetics Research Symposium 2007(2007年电磁学研究新进展学术研讨会)(PIERS 2007)
北京
英文
369-373
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）