PVC/Rn222 diffusion  

Posted by james barber on June 04, 2004 at 16:55:26:

It appears that diffusion coefficients for polyvinylchloride PVC are different for various gases ?

I need a diffusion coefficient for a heavier gas (Rn-222) ?

I assume it will take a longer travel time through the material because to the size?

In this case the travel time through the material will also affect the external flux rate as a function of the decay law .693/5500 min.

T1/2 Rn-222 = 3.8 days

Are there any known/established/accepted diffusion coefficients derived from studies of PVC and Rn-222 ?

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