20.500.12556/DiRROS-24682 Unveiling the radiation-induced defect production and damage evolution in tungsten using multi-energy Rutherford backscattering spectroscopy in channeling configuration 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. tungsten defects Rutherford backscattering spectroscopy in channeling configuration displacement damage molecular dynamic simulations transmission electron microscopy presevna elektronska mikroskopija true false true Elsevier Nizozemska Angleški jezik Slovenski jezik © 2023 The Authors. Neznano 2025-12-12 09:04:03 2025-12-12 09:04:03 2025-12-13 03:51:06 0000-00-00 00:00:00 2024 0 0 Nasl. z nasl. zaslona; Soavtorji iz Slovenije: J. Zavašnik, E. Punzón-Quijorna, A. Šestan, M. Kelemen; Opis vira z dne 9. 11. 2023; str. 1-11 Vol. 263, [article no.] 119499 Jan. 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2023-06-21 2023-11-03 2023-11-04 53 1873-2453 10.1016/j.actamat.2023.119499 171419139 https://www.sciencedirect.com/science/article/pii/S1359645423008285?via%3Dihub 1 241b8d3b-d731-11f0-94a7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=36851 RAZ_Markelj_Sabina_2024.pdf RAZ_Markelj_Sabina_2024.pdf 1 764CE6493E3A9167C16C4746F0BCBD28 2c75515ab0d8bebc39861ad7d3839b8aa241f20c2b40644088beb7257cfcb2a2 47ae29b8-d732-11f0-94a7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=36852 Institut Jožef Stefan 0 0 0