Visualization of atmospheric diffusion with Mathematica

Shinohara, Kunihiko

The calculation of atmospheric concentrations of radionuclides discharged from nuclear facilities is the first step for environmental dose assessment. Gaussian diffusion equation is usually used for the calculation. Computer programs such as ANDOSE and ORION-II have been developed by using of the equation and applied with meteorological data to evaluuate dose equivalents in the environment. results are shown numerically by the computer codes. However, if the results are shown in visualized form, it may be very useful to understand the diffusion phenomena and will also be helpful for beginners of the environmental dose assessment In the report, atmospheric diffusions and depositions by Gaussian equation have been visualized with mathematica. Almost text and graphics in the report are the direct print of mathematica's Note Book.