title: Ð ÐµÐ½ÑÐ³ÐµÐ½Ð´Ð¸ÑÑÐ°ÐºÑÐ¸Ð¾Ð½Ð½Ð¾Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð° Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð²Ð¾Ð»ÑÑÑÐ°Ð¼Ð° Ð´Ð»Ñ Ð¿ÐµÑÐ²Ð¾Ð¹ ÑÑÐµÐ½ÐºÐ¸ ÑÐµÑÐ¼Ð¾ÑÐ´ÐµÑÐ½Ð¾Ð³Ð¾ ÑÐµÐ°ÐºÑÐ¾ÑÐ° ÐÐ¢Ð­Ð
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: X-ray diffraction study of a tungsten-based material for the first wall of ITER
Creators: name: ÐÐ¾Ð·ÑÑÐºÐ¸Ð½Ð°, ÐÐ»ÐµÐ½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: ÑÐµÐ½ÑÐ³ÐµÐ½Ð´Ð¸ÑÑÐ°ÐºÑÐ¸Ð¾Ð½Ð½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð·
Ð¿Ð¾ÑÐ¾ÑÐºÐ¾Ð²Ð°Ñ ÑÐµÐ½ÑÐ³ÐµÐ½Ð¾Ð²ÑÐºÐ°Ñ Ð´Ð¸ÑÑÐ°ÐºÑÐ¸Ñ
Ð²Ð¾Ð»ÑÑÑÐ°Ð¼
Ð¿ÐµÑÐ²Ð°Ñ ÑÑÐµÐ½ÐºÐ°
Ð¾Ð±ÑÐ°ÑÑÐ½Ð½ÑÐ¹ Ðº Ð¿Ð»Ð°Ð·Ð¼Ðµ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»
x-ray diffraction analysis
powder diffraction
tungsten
first wall
plasma-facing material

description: Ð Ð°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸Ð·ÑÑÐµÐ½Ð¸Ñ Ð¾Ð±ÑÐ°Ð·ÑÐ° Ð²Ð¾Ð»ÑÑÑÐ°Ð¼Ð°, Ð¾Ð±Ð»ÑÑÑÐ½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÐ¾ÐºÐ¾Ð¼ Ð³ÐµÐ»Ð¸ÐµÐ²Ð¾Ð¹ Ð¿Ð»Ð°Ð·Ð¼Ñ. Ð¦ÐµÐ»ÑÑ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÐ»Ð¾ÑÑ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ðµ ÑÐ°Ð·Ð¾Ð²Ð¾Ð³Ð¾ ÑÐ¾ÑÑÐ°Ð²Ð°, Ð¼Ð¾ÑÑÐ¾Ð»Ð¾Ð³Ð¸Ð¸ Ð¿Ð¾Ð²ÐµÑÑÐ½Ð¾ÑÑÐ¸ Ð¸ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð² Ð¼Ð¸ÐºÑÐ¾ÑÑÑÑÐºÑÑÑÑ Ð¾Ð±ÑÐ°Ð·ÑÐ° Ð´Ð¾ Ð¸ Ð¿Ð¾ÑÐ»Ðµ Ð¾Ð±Ð»ÑÑÐµÐ½Ð¸Ñ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¿Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸, ÐºÐ¾ÑÐ¾ÑÐ°Ñ ÑÐ¼Ð¾Ð³Ð»Ð° Ð±Ñ Ð¾Ð¿Ð¸ÑÐ°ÑÑ Ð¿ÑÐ¾Ð¸Ð·Ð¾ÑÐµÐ´ÑÐ¸Ðµ Ð¿ÑÐ¾ÑÐµÑÑÑ. ÐÐµÑÐ¾Ð´Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð²ÐºÐ»ÑÑÐ°Ð»Ð¸ Ð² ÑÐµÐ±Ñ ÑÐ½ÐµÑÐ³Ð¾Ð´Ð¸ÑÐ¿ÐµÑÑÐ¸Ð¾Ð½Ð½ÑÐ¹ ÑÐµÐ½ÑÐ³ÐµÐ½Ð¾ÑÐ¿ÐµÐºÑÑÐ°Ð»ÑÐ½ÑÐ¹ Ð¼Ð¸ÐºÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð· Ð¸ Ð¿Ð¾ÑÐ¾ÑÐºÐ¾Ð²ÑÑ ÑÐµÐ½ÑÐ³ÐµÐ½Ð¾Ð²ÑÐºÑÑ Ð´Ð¸ÑÑÐ°ÐºÑÐ¸Ñ, Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ ÐºÐ¾ÑÐ¾ÑÐ¾Ð¹ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸Ð»ÑÑ ÑÐµÐ½ÑÐ³ÐµÐ½Ð¾ÑÐ°Ð·Ð¾Ð²ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð·, Ð°Ð½Ð°Ð»Ð¸Ð· Ð¿ÑÐ¾ÑÐ¸Ð»ÐµÐ¹ ÑÐµÐ½ÑÐ³ÐµÐ½Ð¾Ð²ÑÐºÐ¸Ñ Ð»Ð¸Ð½Ð¸Ð¹ Ð¸ ÑÐ¸ÑÐ²ÐµÐ»ÑÐ´Ð¾Ð²ÑÐºÐ¸Ð¹ ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²ÐµÐ½Ð½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð·.
Ð ÐµÐ·ÑÐ»ÑÑÐ°ÑÑ ÑÐ°Ð·Ð½ÑÑ Ð¼ÐµÑÐ¾Ð´Ð¾Ð² ÑÐ¾ÑÐ¾ÑÐ¾ ÑÐ¾Ð³Ð»Ð°ÑÑÑÑÑÑ. Ð Ð¾Ð±ÑÐ°Ð·ÑÐµ Ð¿Ð¾ÑÐ»Ðµ Ð¾Ð±-Ð»ÑÑÐµÐ½Ð¸Ñ Ð½Ð°Ð±Ð»ÑÐ´Ð°Ð»Ð°ÑÑ Ð°ÑÐ¸Ð¼Ð¼ÐµÑÑÐ¸Ñ Ð´Ð¸ÑÑÐ°ÐºÑÐ¸Ð¾Ð½Ð½ÑÑ ÑÐµÑÐ»ÐµÐºÑÐ¾Ð² Ð²Ð¾Ð»ÑÑÑÐ°Ð¼Ð°, Ð´Ð»Ñ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ñ ÐºÐ¾ÑÐ¾ÑÐ¾Ð¹ Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð° Ð¼Ð¾Ð´ÐµÐ»Ñ Ñ Ð´Ð²ÑÐ¼Ñ ÑÐ°Ð·Ð°Ð¼Ð¸ Ð²Ð¾Ð»ÑÑÑÐ°Ð¼Ð° Ñ Ð½ÐµÐ·Ð½Ð°ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾ Ð¾ÑÐ»Ð¸ÑÐ°ÑÑÐ¸Ð¼Ð¸ÑÑ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ°Ð¼Ð¸ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ°ÑÐ½Ð¾Ð¹ ÑÑÐµÐ¹ÐºÐ¸. Ð ÑÐ°ÐºÐ¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸ ÑÐ°Ð·Ð° Ð¸Ð· Ð³Ð»ÑÐ±Ð¸Ð½Ñ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð° Ð¸Ð¼ÐµÐµÑ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ñ ÑÐ°Ð·Ð¼ÐµÑÐ¾Ð² ÐºÑÐ¸ÑÑÐ°Ð»Ð»Ð¸ÑÐ¾Ð² Ð¸ Ð¼Ð¸ÐºÑÐ¾Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ð¹ Ð½Ð°Ð¸Ð±Ð¾Ð»ÐµÐµ Ð±Ð»Ð¸Ð·ÐºÐ¸Ðµ Ðº Ð·Ð½Ð°ÑÐµÐ½Ð¸ÑÐ¼ Ð½Ð° Ð½ÐµÐ¾Ð±Ð»ÑÑÑÐ½Ð½Ð¾Ð¹ ÑÑÐ¾ÑÐ¾Ð½Ðµ, ÑÐ¾Ð³Ð´Ð° ÐºÐ°Ðº Ð²ÑÐ¾ÑÐ°Ñ Ð´ÐµÑÐµÐºÑÐ½Ð°Ñ ÑÐ°Ð·Ð° Ð¾ÑÐ½Ð¾ÑÐ¸ÑÑÑ Ðº Ð¿ÑÐ¸Ð¿Ð¾Ð²ÐµÑÑÐ½Ð¾ÑÑÐ½Ð¾Ð¼Ñ ÑÐ»Ð¾Ñ Ð¸ Ð¾ÑÐ»Ð¸ÑÐ°ÐµÑÑÑ Ð¿ÑÐ¸Ð¼ÐµÑÐ½Ð¾ ÑÑÐ¾ÐµÐºÑÐ°ÑÐ½ÑÐ¼ ÑÐ²ÐµÐ»Ð¸ÑÐµÐ½Ð¸ÐµÐ¼ ÑÐ°Ð·Ð¼ÐµÑÐ¾Ð² ÐºÑÐ¸ÑÑÐ°Ð»Ð»Ð¸ÑÐ¾Ð² Ð¸ Ð´Ð²ÑÐºÑÐ°ÑÐ½ÑÐ¼ ÑÐ¼ÐµÐ½ÑÑÐµÐ½Ð¸ÐµÐ¼ Ð²ÐµÐ»Ð¸ÑÐ¸Ð½Ñ Ð¼Ð¸ÐºÑÐ¾Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ð¹.
ÐÐ¾Ð»ÑÑÑÐ°Ð¼ ÑÐ²Ð»ÑÐµÑÑÑ Ð³Ð»Ð°Ð²Ð½ÑÐ¼ ÐºÐ°Ð½Ð´Ð¸Ð´Ð°ÑÐ¾Ð¼ Ð´Ð»Ñ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð° Ð¿ÐµÑÐ²ÑÑ ÑÑÐµÐ½Ð¾Ðº ÑÐµÑÐ¼Ð¾ÑÐ´ÐµÑÐ½Ð¾Ð³Ð¾ ÑÐµÐ°ÐºÑÐ¾ÑÐ° ÐÐ¢Ð­Ð , Ð² ÑÐ²ÑÐ·Ð¸ Ñ ÑÐµÐ¼ Ð±ÑÐ»Ð¸ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ñ Ð¼Ð½Ð¾Ð³Ð¾ÑÐ¸ÑÐ»ÐµÐ½Ð½ÑÐµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÐµÐ³Ð¾ Ð¿Ð¾Ð²ÐµÐ´ÐµÐ½Ð¸Ñ Ð² ÑÑÐ»Ð¾Ð²Ð¸ÑÑ, Ð¸Ð¼Ð¸ÑÐ¸ÑÑÑÑÐ¸Ñ Ð½Ð°Ð³ÑÑÐ·ÐºÑ Ð¿ÑÐ¸ ÑÐµÑÐ¼Ð¾ÑÐ´ÐµÑÐ½ÑÑ ÑÐµÐ°ÐºÑÐ¸ÑÑ. ÐÐ´Ð½Ð°ÐºÐ¾ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ, Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÐµ Ð´Ð¾ ÑÐ¸Ñ Ð¿Ð¾Ñ, Ð² ÑÐ¾Ð¼ ÑÐ¸ÑÐ»Ðµ Ð¼ÐµÑÐ¾Ð´Ð°Ð¼Ð¸ ÑÐµÐ½ÑÐ³ÐµÐ½Ð¾Ð²ÑÐºÐ¾Ð¹ Ð´Ð¸ÑÑÐ°ÐºÑÐ¸Ð¸, Ð² Ð¾ÑÐ½Ð¾Ð²Ðµ ÑÐ²Ð¾ÐµÐ¹ ÐºÐ°ÑÐµÑÑÐ²ÐµÐ½Ð½ÑÐµ, Ð° Ð½Ðµ 
ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²ÐµÐ½Ð½ÑÐµ. ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° ÑÐ²Ð»ÑÐµÑÑÑ Ð¿ÐµÑÐ²Ð¾Ð¹ Ð¿Ð¾Ð¿ÑÑÐºÐ¾Ð¹ Ð¿ÑÐ¸Ð¼ÐµÐ½Ð¸ÑÑ ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²ÐµÐ½Ð½ÑÐµ Ð¼ÐµÑÐ¾Ð´Ñ ÑÐµÐ½ÑÐ³ÐµÐ½Ð¾Ð²ÑÐºÐ¾Ð¹ Ð´Ð¸ÑÑÐ°ÐºÑÐ¸Ð¸ Ð´Ð»Ñ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð¸Ñ ÑÐ²ÐµÐ´ÐµÐ½Ð¸Ð¹ Ð¾ ÑÐ²Ð¾Ð¹ÑÑÐ²Ð°Ñ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð°, ÑÐµÐ½Ð½ÑÑ Ð´Ð»Ñ Ð´Ð°Ð»ÑÐ½ÐµÐ¹ÑÐµÐ¹ ÑÐ°Ð±Ð¾ÑÑ Ð½Ð°Ð´ Ð¿ÑÐ¾ÐµÐºÑÐ¾Ð¼ ÐÐ¢Ð­Ð .
description: The thesis is dedicated to the study of tungsten sample irradiated with helium ion plasma. The goal was to determine the phase composition, surface morphology and microstructure parameters of the sample before and after irradiation, and subsequently to create a model that would describe the processes that occur after plasma treatment. The research methods included Energy Dispersive X-ray Spectroscopy and powder X-Ray Diffraction, on the basis of which X-ray Line Profile Analysis and Rietveld Quantitative Analysis were carried out.
Different methods show well consistent results. Asymmetry of the tungsten reflections has been observed after the irradiation. A model with two W phases with slightly different lattice parameters was proposed. The model attributes the phase with crystallite size and microstrain parameters that are closest to the vir-gin sample to the bulk of the sample, whereas the defect phase with a threefold increase of crystallite size and a twofold decrease of microstrain parameter is attributed to near-surface layer of the sample.
Tungsten is the main candidate for first wall material in fusion devices of ITER, therefore a lot of research had been conducted of its behavior under conditions imitating fusion reactions load. However, the results obtained so far have been qualitative not quantitative. This thesis is the first attempt to applying quantitative x-ray diffraction methods to acquire information about properties of the material, which is useful for further work on ITER project.