H. B. Wang

Investigation of fragmentation dynamics of nitrogen dimers by collisions with highly charged ions

Synopsis The fragmentation dynamics of nitrogen molecule dimers have been studied by using highly charged Ne8+ ions at impact energy of 1.0 MeV. For its three-body fragmentation, three fragmentation mechanisms have been identified by analyzing Dalitz plot and Newton diagram of the momenta of three fragment ions. The sequential dissociation of covalent first breakdown is quite surprising in contrast to the fragmentation of triatomic molecule.

The fragmentation of neon dimer induced by low energy O6+ ions

We have investigated the fragmentation channels Ne+-Ne+ and Ne2+-Ne+ from Ne2 dimer induced by O6+ ions at impact energy of 15 keV/u. The Ne+-Ne+ fragmentation channel mainly results from three pathways: the interatomic coulombic decay of Ne2+(2p4)-Ne initial state, the direct columbic explosion and the radiation charge transfer. Nevertheless, the fragmentation channel Ne2+-Ne+ is predominant by the direct coulombic explosion.