Software -Radiation2D
The software can be downloaded from the link below. Click the link, download the zip file from Dropbox, and unzip the file locally. The Radiation2D program runs directly from the .exe file.
https://www.dropbox.com/s/p9193njvi1uc8ca/Radiation2D.zip?dl=0
The detailed use manual (English and Japanese versions), and a publication describing the underlying theory, are included below.
Theory underlying the Radiation2D program