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Tritium Absorption in Materials





> Does anyone know of any studies done on the absorption of tritium in
> various materials, eg metals, plastics, rubber, wood, graphite, concrete
> etc as a function of the exposure concentration and duration of exposure.
> 
> I am trying to relate the absorbed level of tritium with its exposure
> history. For example from studies we have done, we know that for flat
> sheet metal (aluminium), an exposure of 0.3MBq/m3 (8uCi/m3) for several
> hundred hours results in an absorption less than 1Bq/gram in the material,
> whereas an exposure of 80MBq/m3 for a few hours results in >500Bq/gram.
> 
> Is it reasonable to assume a linear relationship between activity in the
> material and its exposure concentration? What other factors might
> influence the absorption rate? Incidentally in the above examples, we
> found no detectable surface contamination after the exposures, whereas the
> volumetric concentrations were detectable.
> 
> Any insights into this problem would be appreciated.
> 
> 
> 
> Bharat Patel
> Health Physicist
> JET Facilities
> Abingdon
> Oxon
> UK
> 
> email bharat.patel@jet.uk
> 
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