Abstract
Films of poly(vinyl alcohol), ∼2 nm thick, on silicon, copper and gold substrates were allowed to degrade for up to 800 min during monochromatized Al Kα XPS. Relative initial degradation rates of 1: ∼33: ∼41 were measured for the three substrates, consistent with their yield of photoelectrons and secondary electrons The initial rate of degradation was found to vary linearly with the x-ray intensity.
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