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Christmas Light
’Twas the night before Christmas when all through the house
No electrons were flowing through even my mouse.
All devices were plugged by the chimney with care
With the hope that St. Nikola Tesla would share.
B. Peter McGrail
Nuclear Technology | Volume 123 | Number 1 | July 1998 | Pages 82-89
Technical Paper | Radioactive Waste Management and Disposal | doi.org/10.13182/NT98-A2881
Articles are hosted by Taylor and Francis Online.
Analytical solutions to the unsteady diffusion equation in spherical geometry are presented for uniform and composite porous media. In this case, a Neumann (prescribed flux) boundary condition is assumed as opposed to a Dirichlet (prescribed concentration) boundary condition used in previously published derivations. For radionuclides that have very high solubility under a given set of geochemical conditions, such as 99Tc and 79Se under oxidizing conditions, a prescribed flux boundary condition is more appropriate.