20.500.12556/DiRROS-28656 Superfocusing of channelled protons – anharmonic oscillation model Focusing of channelled ions just below the crystal surface, known as superfocusing, was treated analytically as a combination of straight movement along the channel axis and perpendicular oscillations of an anharmonic oscillator. The anharmonic term in the channel potential is responsible for dispersion of the trajectories. It was shown that the anharmonic term vanishes for a specific oscillation plane along the <1 0 0> channel, which would in principle allow a very sharp focusing point. However, the focusing pattern is blurred due to the multiple scattering by electrons. This effect, which was estimated from the projectile energy loss calculated for axially dependent electron density, can completely obscure the focusing effect from the second focusing point onwards. superfocusing channeled protons true false true Elsevier Nizozemska Angleški jezik Ni določen © 2026 The Authors. Neznano 2026-03-27 09:12:07 2026-03-27 09:12:07 2026-03-30 03:50:54 0000-00-00 00:00:00 2026 0 0 Nasl. z nasl. zaslona; Opis vira z dne 23. 3. 2026; str. 1-8 Vol. 574, [article no.] 166081 May 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2025-12-13 2026-03-06 2026-03-14 539.1 1872-9584 10.1016/j.nimb.2026.166081 272610307 https://www.sciencedirect.com/science/article/pii/S0168583X26000820?via%3Dihub 1 a807efcf-29b4-11f1-8a61-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=42587 RAZ_Smit_Ziga_2026.pdf RAZ_Smit_Ziga_2026.pdf 1 DFB8E2B37BFD9B6F4E3E14DCF26D3316 c32174b2b3ff07243206e88cac7b0dd2b0cc08b2847c3b19bb6c0b1b8bcd4da8 edb6001f-29b4-11f1-8a61-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=42588 Institut Jožef Stefan 0 0 0