We report measured partial cross sections for the fragments from dissociative photoionization of N2 and O2 over the photon energy range of 100 to 800 eV. The partial cross sections were found to follow a power law of the form (hv)-α, where hv is the incident photon energy. The exponent, a, is shown to be near 2.7 for N+2 and for all N2 partial cross sections above the nitrogen K-edge. An exponent of 3.0 was found for O+2 and for all O2 partial cross sections above the oxygen K-edge.
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