The forward rainbow scattering of low energy protons by a graphene sheet
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© 2018 Elsevier B.V.
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This article studies the rainbow scattering of 5-key protons by the single sheet of free-standing graphene and its possible use as a tool for investigation of the ion-graphene interaction. The proton-graphene interaction potential was constructed by using the Doyle-Turner, ZBL, and Moliere proton-carbon interaction potentials. The thermal motion of carbon atoms was included by averaging the potentials according to the Debye model. Proton trajectories were obtained by numerical solution of the corresponding Newton equations of motion. They were used to obtain the mapping of the proton initial positions to their scattering angles. Morphological properties of the introduced mapping including its multiplicity and the rainbow singularities were used to explain important features of the obtained angular distributions of transmitted protons.
Keywords:graphene / rainbow scattering
Source:Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 2018, 422, 54-62
- Physics and Chemistry with Ion Beams (RS-45006)
ISSN: 0168-583X (print); 1872-9584 (electronic)