Modulation of the binary-encounter peak in electron double differential cross sections of H2 by interference effects

R. D. RIVAROLA; S. CHATTERJEE; A. H. KELKAR; C. R. STIA; O. A. FOJÓN; L. C. TRIBEDI

Salamanca, España

Congreso; X European Conference on Atoms, Molecules and Photons; 2010

Universidades de Salamanca, Autónoma de Madrid, Complutense de Madrid, de Barcelona y Universidad Nueva de Lisboa

In the present work, the single ionization process of molecular H2 targets by fast electron impact is considered. Particular attention is paid to the interference effects coming from the coherent electron emission from the proximities of each one of the centers of the molecule, and its influence on the binary-encounter (BE) region (in this region all the momentum is transferred to the ionized electron). Experimental and theoretical double differential cross sections (DDCS´s) for impact of 8 keV-electrons on H2 are presented and compared with the ones corresponding to single-center He targets. Interference effects are explored in the BE region for H2 as a function of the ejected electron velocity, at fixed ejection angles.