Effect of impact-parameter-dependent electronic energy loss on reflected-ion spectra

Peter Sigmund, V. I. Shulga, Andreas Schinner

Research output: Contribution to journalJournal articleResearch

Abstract

Conventional theory and computation of the slowing-down of ions and associated radiation effects relieson a scheme proposed by Lindhard and Scharff, in which electronic energy losses enter as a friction force.We study limitations of this scheme, when the dependence of electronic losses on the impact parameter inindividual atomic collisions is taken into account. We study this feature on the projected range – where it isfound to be insignificant – and on reflected-ion spectra – where major changes are observed, dependent onion energy and ion-target combination. Most sensitive are the position of the peak in the reflected-energyspectrum as well as the behavior near the maximum energy loss. Systems studied include He-Ag, Ne-Ag,B-Si and D-Pt
Original languageDanish
JournalNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Number of pages18
ISSN0168-583X
Publication statusSubmitted - 27. Jan 2020

Cite this

Sigmund, P., Shulga, V. I., & Schinner, A. (2020). Effect of impact-parameter-dependent electronic energy loss on reflected-ion spectra. Manuscript submitted for publication.