Abstract
The validity of constitutive equation and numerical method of potential induced particle diffusion were discussed. In the analysis of potential induced particle diffusion by finite difference method (FDM), α multiplication method which multiplies potential induced terms was found to be valid to realize correct particle diffusion behaviors driven by the potential gradient term. In this paper, the significance of the concept of α multiplication method for the numerical analysis on the potential induced particle diffusion problem were discussed and its validity was proved.