Experimental evidence of the superfocusing effect for axially channeled MeV protons
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2016
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©2016 American Physical Society
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Sub-Angstrom focusing of megaelectronvolt (MeV) ions within axial channels was predicted over 10 years ago, but evidence proved elusive. We present experimental angular distributions of axially channeled MeV protons in a 55-nm-thick (001) silicon membrane through which multiple scattering is negligible. Fine angular structure is in excellent agreement with Monte Carlo simulations based on three interaction potentials, providing indirect evidence of the existence of the superfocusing effect with flux enhancement of around 800 within a focused beam width of similar to 20 pm.
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Physical Review B: Condensed Matter and Materials Physics, 2016, 94, 7Funding / projects:
- Physics and Chemistry with Ion Beams (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45006)
DOI: 10.1103/PhysRevB.94.075415
ISSN: 2469-9950; 2469-9969
WoS: 000381308700008
Scopus: 2-s2.0-84981240460
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VinčaTY - JOUR AU - Motapothula, Mallikarjuna Rao AU - Petrović, Srđan M. AU - Nešković, Nebojša B. AU - Breese, Mark B.H. PY - 2016 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1205 AB - Sub-Angstrom focusing of megaelectronvolt (MeV) ions within axial channels was predicted over 10 years ago, but evidence proved elusive. We present experimental angular distributions of axially channeled MeV protons in a 55-nm-thick (001) silicon membrane through which multiple scattering is negligible. Fine angular structure is in excellent agreement with Monte Carlo simulations based on three interaction potentials, providing indirect evidence of the existence of the superfocusing effect with flux enhancement of around 800 within a focused beam width of similar to 20 pm. T2 - Physical Review B: Condensed Matter and Materials Physics T1 - Experimental evidence of the superfocusing effect for axially channeled MeV protons VL - 94 IS - 7 DO - 10.1103/PhysRevB.94.075415 ER -
@article{ author = "Motapothula, Mallikarjuna Rao and Petrović, Srđan M. and Nešković, Nebojša B. and Breese, Mark B.H.", year = "2016", abstract = "Sub-Angstrom focusing of megaelectronvolt (MeV) ions within axial channels was predicted over 10 years ago, but evidence proved elusive. We present experimental angular distributions of axially channeled MeV protons in a 55-nm-thick (001) silicon membrane through which multiple scattering is negligible. Fine angular structure is in excellent agreement with Monte Carlo simulations based on three interaction potentials, providing indirect evidence of the existence of the superfocusing effect with flux enhancement of around 800 within a focused beam width of similar to 20 pm.", journal = "Physical Review B: Condensed Matter and Materials Physics", title = "Experimental evidence of the superfocusing effect for axially channeled MeV protons", volume = "94", number = "7", doi = "10.1103/PhysRevB.94.075415" }
Motapothula, M. R., Petrović, S. M., Nešković, N. B.,& Breese, M. B.H.. (2016). Experimental evidence of the superfocusing effect for axially channeled MeV protons. in Physical Review B: Condensed Matter and Materials Physics, 94(7). https://doi.org/10.1103/PhysRevB.94.075415
Motapothula MR, Petrović SM, Nešković NB, Breese MB. Experimental evidence of the superfocusing effect for axially channeled MeV protons. in Physical Review B: Condensed Matter and Materials Physics. 2016;94(7). doi:10.1103/PhysRevB.94.075415 .
Motapothula, Mallikarjuna Rao, Petrović, Srđan M., Nešković, Nebojša B., Breese, Mark B.H., "Experimental evidence of the superfocusing effect for axially channeled MeV protons" in Physical Review B: Condensed Matter and Materials Physics, 94, no. 7 (2016), https://doi.org/10.1103/PhysRevB.94.075415 . .