Target Dependence of Post-Collision Effects in Ionization by Proton Impact
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.
A. Silvus et al., "Target Dependence of Post-Collision Effects in Ionization by Proton Impact," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 52, no. 12, Institute of Physics - IOP Publishing, May 2019.
The definitive version is available at https://doi.org/10.1088/1361-6455/ab1df5
Center for High Performance Computing Research
National Science Foundation (U.S.)
Keywords and Phrases
atomic collisions; few-body problem; ionization
International Standard Serial Number (ISSN)
Article - Journal
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01 May 2019