Target dependence of post-collision effects in ionization by proton impact. (28th May 2019)

• Record Type: Journal Article
• Authors: Silvus, A; Dhital, M; Bastola, S; Buxton, J; Klok, Z; Ali, E; Ciappina, M F; Boggs, B; Cikota, D; Madison, D H; Schulz, M
• Is Part Of: Journal of physics. Volume 52:Number 12(2019:Jun. 28)
• Publication Date: 2019-05-28
• Subjects: ionization -- atomic collisions -- few-body problem; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/1361-6455/ab1df5
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: We have measured and calculated double differential cross sections for ionization of Ne and Ar by 75 keV proton impact for a broad range of fixed projectile energy losses as a function of scattering angle. Along with data obtained previously for lighter targets this made possible a systematic analysis of post-collision effects between the scattered projectile and the continuum electron in the exit channel as a function of the target ionization potential. The data are consistent with an increasing strength of such effects with increasing ionization potential. However, second-order effects involving the projectile—residual target ion interaction also play an important role.