Experimental observation of non-Coulombic states of transient multicharged molecular ions N2 4+ and O2 4+
A direct experimental evidence of non-Coulombic states of N2 4+ and O2 4+ transient multicharged ions is presented using laser-induced Coulomb explosion and kinetic-energy spectra measurements of, respectively, the N2++N2+ and O2++O2+ fragmentation channels. The substructure patterns of the energy spectra provide an unambiguous identification of several fragmentation channels within the same final charge states of the fragments. Higher laser intensities favor higher energetic channels. This experimental fact and ab initio calculations from the literature indicate that the molecule explodes at an internuclear distance range close to the equilibrium internuclear distance for these high energetic channels.
Physical Review A
- Pub Date:
- March 2001
- Multiphoton ionization and excitation to highly excited states;
- Autoionization photoionization and photodetachment;
- Mechanical effects of light on atoms molecules electrons and ions