Figure 3 (a) 14eV O+ colliding with O2: with O+ traveling at 90 degrees in reference to the molecular axis of O2 and hitting head-on OI of O2, dissociation evident at 14eV; (b) 54eV O+ traveling at 90 degrees in reference to the molecular axis of O2 and hitting OI of O2 by missing the head-on condition by 0.04nm, dissociation evident at 54eV and no dissociation for collision energy less than 54eV.