Angle Resolved Photoelectron Spectroscopy of O2(a1Dg) with
   Synchrotron Radiation
   Alberto De Fanis
   Chemistry Department, University of Southampton, SOuthampton, UK 
   Relative cross section for the O2+(X2Pg) v+=0,1,2,3 <-- O2(a1Dg)+hn 
   ionization process has been studied with synchrotron radiation in the
   photon energy range 11.0-17.0eV, and it shows resonant structure arising from 
   autoionisation from a neutral Rydberg state. The structure is also reflected
   in the asymmetry parametr for angular distribution.