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Deterioration of polymer coatings due to UV light and salt effects as a function of exposure time was studied by using positron annihilation spectroscopy. Doppler broadening energy spectroscopy (DBES) of annihilation radiation and positron annihilation lifetime (PAL) were measured as a function of positron incident energy (0-30keV). A significant decrease in the S-defect parameter from DBES and the...
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