Lattice location of O 18 in ion implanted Fe crystals by Rutherford backscattering spectrometry, channeling and nuclear reaction analysis
| Autor: | B. K. Panigrahi, Mathayan Vairavel, B. Sundaravel |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Nuclear reaction
Nuclear and High Energy Physics Materials science Analytical chemistry 02 engineering and technology 021001 nanoscience & nanotechnology Rutherford backscattering spectrometry 01 natural sciences Fluence Ion Condensed Matter::Materials Science Ion implantation Octahedron Nuclear reaction analysis Lattice (order) 0103 physical sciences Atomic physics 010306 general physics 0210 nano-technology Instrumentation |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 383:47-51 |
| ISSN: | 0168-583X |
| DOI: | 10.1016/j.nimb.2016.06.009 |
| Popis: | There are contradictory theoretical predictions of lattice location of oxygen interstitial atom at tetrahedral and octahedral interstices in bcc Fe. For validating these predictions, 300 keV O18 ions with fluence of 5 × 1015 ions/cm2 are implanted into bcc Fe single crystals at room temperature and annealed at 400 °C. The Rutherford backscattering spectrometry (RBS) and nuclear reaction analysis (NRA)/channeling measurements are carried out with 850 keV protons. The lattice location of implanted O18 is analysed using the α-particles yield from O18(p,α)N15 nuclear reaction. The tilt angular scans of α-particle yield along 〈110〉 and 〈100〉 axial directions are performed at room temperature. Lattice location of O18 is found to be at tetrahedral interstitial site by comparing the experimental scan with simulated scans using FLUX7 software. |
| Databáze: | OpenAIRE |
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