| Title: | Superfocusing of channelled protons – anharmonic oscillation model |
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| Authors: | ID Šmit, Žiga, Institut "Jožef Stefan" (Author)
ID Punzón Quijorna, Esther, Institut "Jožef Stefan" (Author)
ID Markelj, Sabina, Institut "Jožef Stefan" (Author) |
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| Files: |  URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S0168583X26000820?via%3Dihub
 PDF - Presentation file, download (4,14 MB)
MD5: DFB8E2B37BFD9B6F4E3E14DCF26D3316
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IJS - Jožef Stefan Institute
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| Abstract: | 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. |
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| Keywords: | superfocusing, channeled protons |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 13.12.2025 |
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| Article acceptance date: | 06.03.2026 |
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| Publication date: | 14.03.2026 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2026 |
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| Number of pages: | str. 1-8 |
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| Numbering: | Vol. 574, [article no.] 166081 |
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| Source: | Nizozemska |
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| PID: | 20.500.12556/DiRROS-28656  |
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| UDC: | 539.1 |
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| ISSN on article: | 1872-9584 |
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| DOI: | 10.1016/j.nimb.2026.166081 |
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| COBISS.SI-ID: | 272610307 |
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| Copyright: | © 2026 The Authors. |
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| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 23. 3. 2026;
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| Publication date in DiRROS: | 27.03.2026 |
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| Views: | 129 |
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| Downloads: | 88 |
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