Long time ago I was asked to look theoretically at the question whether short time (that means cheap) deposition experiments could be used to differentiate between several (intensely discussed at that time) mechanisms of deposition of material unto surfaces.

They can not.

This is quite a time ago, anyhow I decided to publish the attached notebook, which confirms the above conclusion, but on the other hand shows the threefold superior abilities of Mathematica (symbolical computation, numerical computation, acting like a text system) in preparing such a report.

And perhaps it could be useful for people looking for solving the Diffusion Equation for some special environments.

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