Coherent electron emission in single ionization of multielectronic diatomic molecules

C. A. TACHINO; F. MARTÍN; R. D. RIVAROLA

Caen

Congreso; XXII International Symposium on Ion Atom Collisions; 2011

There is a relatively scarce number of works dedicated to the study of interference effects due to coherent emission of electrons from diatomic molecules with several molecular orbitals (MO) in their fundamental state [1,2]. In the present work, we analyse the single ionization reaction of N2, O2 and CO molecules by impact of bare ions. The dynamics of the reaction is described by using the CDW-EIS model, within a two-effective centre approximation. Triply differential cross sections (TDCS) as a function of the energy and solid angle of the emitted electron, and of the orientation of the molecule are calculated for a full coplanar geometry. Double differential cross sections (DDCS) -obtained by averaging the angular distributions over all possible molecular orientations- are also shown.2, O2 and CO molecules by impact of bare ions. The dynamics of the reaction is described by using the CDW-EIS model, within a two-effective centre approximation. Triply differential cross sections (TDCS) as a function of the energy and solid angle of the emitted electron, and of the orientation of the molecule are calculated for a full coplanar geometry. Double differential cross sections (DDCS) -obtained by averaging the angular distributions over all possible molecular orientations- are also shown. Ratios obtained by including or not interference contributions in DDCS for the most internal molecular orbitals of the nitrogen molecule present oscillations in opposite phases depending of their gerade of ungerade character. References: [1] J. L. Baran et al., J. Phys.: Conf. Series 58, 215 (2007); Phys. Rev. A 78, 012710 (2008); [2] M. Winkworth et al., J. Phys.: Conf. Series 163, 012044 (2009); NIMB 267, 373 (2009).et al., J. Phys.: Conf. Series 58, 215 (2007); Phys. Rev. A 78, 012710 (2008); [2] M. Winkworth et al., J. Phys.: Conf. Series 163, 012044 (2009); NIMB 267, 373 (2009).