Fragmentation of molecules by fast ion impact

DIMOPOULOU, C.; HAAG, N.; MOSHAMMER, R.; FAINSTEIN, P. D.; DORN, A.; DURR, M.; FISCHER, D.; ULLRICH, J.

Journal of Physics: Conference Series

IOP Publishing

Lugar: Bristol; Año: 2007 vol. 58 p. 49 - 49

1742-6588

Single ionization of simple molecules, e.g. H2,CO2, by fast charged particle impact has been studied using areaction microscope. By measuring the momenta of the emitted electronand the recoil ionic fragment in coincidence, channel-selectivelow-energy electron spectra have been recorded. The experimental crosssections will be presented, compared with the predictions ofstate-of-the-art CDW-EIS calculations and discussed in terms ofmolecular effects such as (i) autoionization and predissociationchannels, (ii) interference patterns resulting from the two-centergeometry of the diatomic molecule, in analogy to Young's double-slitexperiment and (iii) dependence of the electron emission on theorientation of the molecular axis.