Two Improved Numerical Algorithms of Mie Theory in the Particle Sizing by Light Scattering Method
Wang Shimin, Zhu Zhen, Ye Mao, Lu Yong, Lu Yonggang, Xu Yiqian (Thermal Energy Research Institute, Southeast University, Nanjing 210096)
Two improved Mie scattering numerical algorithms are presented in this paper, which are Improved Continued Fraction Method(ICFM) and Modified Downward Recurrence Method(MDRM). In ICFM, the Bessel function is calculated by using the way proposed by Lentz to broaden the calculative range very much: size parameter up to 10 5, the imaginary part of the refractive index large to 10 5. ICFM solves the problem of unstable recurrence. MDRM decreases the calculative time considerably and is a very practical method. According to results given in this paper, each method has its own advantage and is available in different cases.
【CateGory Index】： O436