gaseous diffusion

gaseous diffusion
noun
: diffusion of gases through a porous barrier at a rate of speed in direct proportion to the weight of the molecules, being used as the basis of a method of separating isotopes (as fissionable uranium 235 from the nonfissionable uranium 238)

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Chem.
the passage of gas through microporous barriers, a technique used for isotope separation, esp. in the preparation of fuel for nuclear reactors.
[1845-50]

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gaseous diffusion noun (nuclear eng)
An isotope separation process based on differences in molecular diffusion
• • •
Main Entry:gas

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gaseous diffusion,
a method of separating isotopes, such as uranium 235 from the common nonfissionable type, by passing them in gas form through a great number of filters.

Useful english dictionary. 2012.

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