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Sökning: WFRF:(Restello S.)

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1.
  • Baricordi, S., et al. (författare)
  • Low-energy-channeling surface analysis on silicon crystals designed for high-energy-channeling in accelerators
  • 2005
  • Ingår i: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 87:9
  • Tidskriftsartikel (refereegranskat)abstract
    • Channeling of relativistic particles in bent Si crystals is a powerful technique for use with accelerators. Its efficiency can be found to be highly dependent on the state of the surface of the crystal steering the particles. We investigated the morphology and structure of the surface of the samples that have been used with high efficiency for channeling in accelerators. Low-energy channeling of 2 MeVα particles or protons was used as a probe. We found that mechanical treatment of the samples leads to a superficial damaged layer, which is correlated to efficiency limitations of the crystal in accelerators. In contrast, chemical etching, which was used to treat the surface of the most efficient crystals, leaves a surface with superior perfection. © 2005 American Institute of Physics.
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2.
  • Della Mea, G., et al. (författare)
  • 14N(α,p)17O nuclear reaction cross-section at 4.9-6.1 MeV
  • 2005
  • Ingår i: Nuclear Instruments and Methods in Physics Research Section B. - : Elsevier BV. - 0168-583X .- 1872-9584. ; 240:4, s. 803-809
  • Tidskriftsartikel (refereegranskat)abstract
    • The 14N(α,p)17O nuclear reaction cross-section was measured in the energy range 4.9-6.1 MeV at the laboratory angle θ = 172° in order to apply ion beam analysis to the detection of N in metal oxynitride layers. Comparison between the new calculation and data in literature was performed, highlighting important discrepancies between the new results and old cross-section data. Application of the new calculations to a standard TiN film suggests improved accuracy for the data in the present work. © 2005 Elsevier B.V. All rights reserved.
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Vomiero, Alberto (2)
Della Mea, G. (2)
Restello, S. (2)
Martinelli, G (1)
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Baricordi, S. (1)
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