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The photodissociation of pernitric acid (PNA) has been studied at 248 nm. The quantum yield for production of OH radicals is 34±16%. The yield of OH from PNA was measured relative to that from H 2 O 2 . The translational and rotational energy current of the OH photofragment from PNA has been characterized. A fluorescent emission was also observed and characterized. It is attributed to electronically excited NO 2 produced in the PNA photodissociation. A maximum yield of 30% for NO 2 * production was determined. The intensity of this emission, and a mass spectrometric peak at m / e = 33, have been found to be useful means of characterizing the purity of the PNA sample.
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MacLeod et al. (1988) studied this question.
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