| Title: | Unveiling the radiation-induced defect production and damage evolution in tungsten using multi-energy Rutherford backscattering spectroscopy in channeling configuration |
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| Authors: | ID Markelj, Sabina, Institut "Jožef Stefan" (Author)
ID Zavašnik, Janez, Institut "Jožef Stefan" (Author)
ID Punzón Quijorna, Esther, Institut "Jožef Stefan" (Author)
ID Šestan, Andreja, Institut "Jožef Stefan" (Author)
ID Kelemen, Mitja, Institut "Jožef Stefan" (Author), et al. |
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| Files: |  URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S1359645423008285?via%3Dihub
 PDF - Presentation file, download (8,29 MB)
MD5: 764CE6493E3A9167C16C4746F0BCBD28
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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: | Radiation-induced defect production in tungsten was studied by a combination of experimental and simulation methods. The analysis of structural defects was performed using multi-energy Rutherford backscattering spectroscopy in channeling configuration (multi-energy C-RBS). To create different microstructures, (111) tungsten (W) single crystals were irradiated with W ions at two different doses (0.02 and 0.2 dpa) at 290 K. Detailed transmission electron microscopy (TEM) analysis of the samples revealed the presence of dislocation lines and loops of different sizes. The RBSADEC code was used to simulate the measured C-RBS spectra, recorded with four different He beam energies along the <111> direction. For the first time for tungsten, molecular dynamics (MD) simulations of overlapping cascades were used as input. The well-known method of randomly displaced atoms (RDA) was applied for comparison. RDA does not provide a satisfactory understanding of the nature of the induced defect structure. With MD, a very good agreement between the simulated and experimental spectra was obtained for the sample prepared at a lower dose, despite the fact that the absolute defect densities are two orders of magnitude higher than those found with TEM. A discrepancy is observed for the high-dose-irradiated sample, which is ascribed to the presence of extended defects such as dislocation lines, which are clearly observed by TEM, but cannot be formed in finite size MD cells. RBSADEC with MD cells as input can describe correctly the response of the RBS signal with analysing beam energy while RDA as input gives the wrong trend. |
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| Keywords: | tungsten, defects, Rutherford backscattering spectroscopy in channeling configuration, displacement damage, molecular dynamic simulations, transmission electron microscopy |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 21.06.2023 |
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| Article acceptance date: | 03.11.2023 |
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| Publication date: | 04.11.2023 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2024 |
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| Number of pages: | str. 1-11 |
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| Numbering: | Vol. 263, [article no.] 119499 |
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| Source: | Nizozemska |
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| PID: | 20.500.12556/DiRROS-24682  |
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| UDC: | 53 |
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| ISSN on article: | 1873-2453 |
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| DOI: | 10.1016/j.actamat.2023.119499 |
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| COBISS.SI-ID: | 171419139 |
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| Copyright: | © 2023 The Authors. |
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| Note: | Nasl. z nasl. zaslona;
Soavtorji iz Slovenije: J. Zavašnik, E. Punzón-Quijorna, A. Šestan, M. Kelemen;
Opis vira z dne 9. 11. 2023;
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| Publication date in DiRROS: | 12.12.2025 |
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| Views: | 57 |
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| Downloads: | 32 |
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