X-ray diffraction study of a tungsten-based material for the first wall of ITER

Autor: A V Voronin, A Kozushkina, A A Levin, R V Sokolov, S I Pavlov
Rok vydání: 2020
Předmět:
Zdroj: Journal of Physics: Conference Series. 1697:012134
ISSN: 1742-6596
1742-6588
DOI: 10.1088/1742-6596/1697/1/012134
Popis: Methods of X-ray diffraction (XRD), Scanning Electron Microscopy and Energy Dispersive X-ray Spectroscopy were applied to POLEMA W sample after He plasma irradiation. The W reflections of the plasma treated sample exhibit an evident asymmetry characterized by a negative asymmetry parameter. Using the Williamson-Hall Plot technique the XRD reflection asymmetry has been successfully quantitatively described in frame of a model with two W phases with slightly different unit cell parameters and essentially different crystallite size and microstrain values.
Databáze: OpenAIRE