The modified Gaussian model of smoke mass was used to simplify the diffusion problem of early nuclear accident. The corrected results were compared with the simulation results of CALPUFF software and the error was within the acceptable range.According to the radioactive gas diffusion simulation and radiation dose calculation a visual operation interface was developed. The initial parameters can be used to calculate the concentration distribution of radioactive diffusion nuclides with time and the influence of radiation dose simply and quickly. ...
