Nuclear Technology and Radiation Protection 2023 Volume 38, Issue 3, Pages: 162-168
https://doi.org/10.2298/NTRP2303162S
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Influence of the ion beam interaction with the crystal electrons on the angular distribution of channeled ions
Starčević Nikola S. 
(Laboratory of Physics, Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia), nikolas@vin.bg.ac.rs
Petrović Srđan M. (Laboratory of Physics, Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia)
This study investigates the effect of crystal electrons on the angular
distribution of channeled protons passing through a thin silicon crystal.
The effect of crystal electrons on the 2 MeV proton beam channeled through a
thin Si crystal plays an important role in the experimentally observed
angular distributions. Using the crystal rainbow effect, we have
morphologically compared the experimental and theoretical angular
distributions of channeled protons and corresponding rainbow lines, with and
without the effect of crystal electrons. Our results demonstrate that the
influence of crystal electrons affects the angular focus of the channeled
ions in the vicinity of the rainbow lines, which are the envelope of this
angular distribution. These findings provide insights into the energy loss
mechanisms for protons channeled through thin silicon crystals and can have
implications for future studies in ion beam physics.
Keywords: ion-solid interaction, channeling, crystal rainbow, interaction potential
Project of the Ministry of Science, Technological Development and Innovation, Republic of Serbia, Grant no. 451-03-47/2023-01/200017
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