Target dependence of post-collision effects in ionization by proton impact

A. Silvus, M. Dhital, S. Bastola, J. Buxton, Z. Klok, E. Ali, M. F. Ciappina, B. Boggs, D. Cikota, D. H. Madison, M. Schulz

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


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.

Original languageEnglish
Article number125202
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number12
StatePublished - 2019
Externally publishedYes


  • atomic collisions
  • few-body problem
  • ionization


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