Abstract
A model for the diffusion-controlled reaction of oxygen with polyethylene in an irradiation environment is presented. Experimental and calculated results on carbonyl formation in thin films (0.0020 to 0.0400 cm) agree to plus or minus 5% for an exposure range of 5 to 100 x 106 r. The effect of dose rate, from 1 to 5 x 106 r/hr, on the rate of carbonyl formation is studied and evaluated in terms of the proposed model.
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