High resolution electron - Momentum resolved ion coincidence spectroscopy

Abstract

When molecules are irradiated by x-rays complicated breakup reactions are initiated: inner shell excitation or ionization leads to a cascade of Auger decays resulting in multiple ionization and multiple bond breaks. During the last years high resolution electron - ion coincidence spectroscopy has developed into a standard tool to analyse molecular break-up reaction pathways. If ion pairs or the momenta of the fragment ions are also recorded, a very detailed analysis of the break-up reaction becomes possible. A manifold of interesting processes can be studied. Here we will discuss site specific fragmentation of CH3F, F3Si-CH2-Si(CH3)3, F3Si-CH2-CH2-Si(CH3)3 and Cl3Si-Si(CH3)3 and electron transfer during the break up of CH3F. © 2007 IOP Publishing Ltd.