A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is
The one-dimensional diffusion equation has been solved for transfer at an exponentially decaying rate from an area source into a semi-infinite diffusion medium. Numerical values of the concentration distribution are given for a wide range of the values of the parameters. The solutions have been used to calculate the radioactive counting rate of a diffusing radio active substance which is being released from the surface, assuming exponential absorption of radiation by the medium. The resultsdoi:10.1098/rspa.1959.0009 fatcat:ixbr23z3pvan5bj5li52eshjda