DISSOCIATIVE PHOTOIONIZATION CROSS-SECTIONS OF NA AND O-2 FROM 100 TO800 EV

We report measured partial cross sections for the fragments from disso ciative photoionization of N-2 and O-2 over the photon energy range of 100 to 800 eV. The partial cross sections were found to follow a powe r law of the form (h nu)(-alpha), where h nu is the incident photon en ergy. The exponent, alpha, is shown to be near 2.7 for N-2(+) and for all N-2 partial cross sections above the nitrogen K-edge. An exponent of 3.0 was found for O-2(+) and for all O-2 partial cross sections abo ve the oxygen K-edge. (C) 1998 Academic Press.