Separation and solid angle correction of the metastable 1s2s2p 4P Auger yield produced in ion-atom collisions using the biased as cell technique: A tool for the determination of the population mechanisms

Abstract

SynopsisWe demonstrate an experimental approach to the solid angle correction needed for the metastable 1s2s2p 4P state obtained in ion-atom collisions with gaseous targets. By applying a small bias voltage VGC on the target gas cell, the 4P contributions are separated into two peaks one arising from inside (which is shifted by e VGC) and the other outside the gas cell which is unshifted. Using SIMION we compute the correction in each case and perform a consistency check on our approach.