2020/11/19 by J. E. Miraglia, Miraglia, J. E.
Physics and Astronomy · #Atomic Physics (physics.atom-ph) #FOS: Physical sciences #physics.atom-ph
paper · pdf · doi:10.48550/arxiv.2011.10137
10 pages, 4 figures
arxiv created 2020/11/19 · arxiv updated 2020/11/23
In this work we study the single ionization of hydrogen and helium by the impact of a punctual Coulomb projectile. To interpretate the cross section we introduce a series of Padé approximant. The nodes of the denominator of the Padé approximant give rise to poles in the charge complex plane. These poles move with the projectile velocity following a certain pattern. We find the positions of the poles of the Continuum Distorted Wave theory and an ensamble of experimental results. It was found that the ionization cross section may have oscillations in terms of the incident charge for a given impact velocity.