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diffusion constant |
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diffusion constant [də′fyü·zhən ‚kän·stənt] (solid-state physics) The diffusion current density in a hologeneous semiconductor divided by the charge carrier concentration gradient. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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[varies]] = mass of fluid that could possibly diffuse into the seal at time = infinity; R = outer maximum radius of the seal; r = the radius of the diffusing fluid front at any time t; D = the diffusion constant for the fluid; [alpha] = a constant; and [J. Nier, The Thermal Diffusion Constant of helium and the Separation of [He. 5) justifies this assumption for the diffusion constants on the basis that at normal pressures only small amounts of the gas are taken up by the rubber. |
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