Hi all,(adsbygoogle = window.adsbygoogle || []).push({});

Having some trouble understanding/finding the derivation of Fick's second law of diffusion in cylindrical co-ordinates.

I have attached the solution which describes the refilling of a laser cleaned spot via surface diffusion.

So basically i would like to know the intermediate steps from Fick's second law to the attached equation.

Many thanks on this one.

(PS not a mathematician as you may have guessed so please dumb it down a shade for me)

Thanks again

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# Fick's second law in cylindrical co-ordinates

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