Impact of plastic deformation on retention under pure D or He high flux plasma expose

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Impact of plastic deformation on retention under pure D or He high flux plasma expose. / Bakaeva, Anastasiia; Terentyev, Dmitry; Van Renterghem, Wouter; Dubinko, Andrii.

In: Nuclear Materials and Energy, Vol. 15, 16.05.2018.

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@article{29e006b572e84c7a84691f07c350aa98,
title = "Impact of plastic deformation on retention under pure D or He high flux plasma expose",
abstract = "The retention of deuterium (D) and helium (He) is studied in pure tungsten after high flux mono-plasma exposure. The recrystallized and plastically deformed tungsten samples are studied to clarify the impact of the material microstructure, in particular dislocation density, on the trapping and release of D and He. Thermal Desorption Spectroscopy (TDS) measurements are performed to reveal the release stages and quantify the retention. Preliminary transmission electron microscopy study was applied to clarify the microstructural modifications induced by the plasma exposure to support the discussion and conclusions. It has been demonstrated that plastic deformation causes considerable suppression of He release within the explored limit of the TDS temperature – 1300 K. This is opposite to what is found for the pure D exposure, where the plastic deformation evidently enhances the D retention, given equivalent exposure conditions in terms of surface temperature and ion fluence.",
keywords = "Tungsten, He-H exposure, High flux plasma, Deformation",
author = "Anastasiia Bakaeva and Dmitry Terentyev and {Van Renterghem}, Wouter and Andrii Dubinko",
note = "Score=10",
year = "2018",
month = "5",
day = "16",
doi = "10.1016/j.nme.2018.05.014",
language = "English",
volume = "15",
journal = "Nuclear Materials and Energy",
issn = "2352-1791",
publisher = "Elsevier",

}

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TY - JOUR

T1 - Impact of plastic deformation on retention under pure D or He high flux plasma expose

AU - Bakaeva, Anastasiia

AU - Terentyev, Dmitry

AU - Van Renterghem, Wouter

AU - Dubinko, Andrii

N1 - Score=10

PY - 2018/5/16

Y1 - 2018/5/16

N2 - The retention of deuterium (D) and helium (He) is studied in pure tungsten after high flux mono-plasma exposure. The recrystallized and plastically deformed tungsten samples are studied to clarify the impact of the material microstructure, in particular dislocation density, on the trapping and release of D and He. Thermal Desorption Spectroscopy (TDS) measurements are performed to reveal the release stages and quantify the retention. Preliminary transmission electron microscopy study was applied to clarify the microstructural modifications induced by the plasma exposure to support the discussion and conclusions. It has been demonstrated that plastic deformation causes considerable suppression of He release within the explored limit of the TDS temperature – 1300 K. This is opposite to what is found for the pure D exposure, where the plastic deformation evidently enhances the D retention, given equivalent exposure conditions in terms of surface temperature and ion fluence.

AB - The retention of deuterium (D) and helium (He) is studied in pure tungsten after high flux mono-plasma exposure. The recrystallized and plastically deformed tungsten samples are studied to clarify the impact of the material microstructure, in particular dislocation density, on the trapping and release of D and He. Thermal Desorption Spectroscopy (TDS) measurements are performed to reveal the release stages and quantify the retention. Preliminary transmission electron microscopy study was applied to clarify the microstructural modifications induced by the plasma exposure to support the discussion and conclusions. It has been demonstrated that plastic deformation causes considerable suppression of He release within the explored limit of the TDS temperature – 1300 K. This is opposite to what is found for the pure D exposure, where the plastic deformation evidently enhances the D retention, given equivalent exposure conditions in terms of surface temperature and ion fluence.

KW - Tungsten

KW - He-H exposure

KW - High flux plasma

KW - Deformation

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/29785410

U2 - 10.1016/j.nme.2018.05.014

DO - 10.1016/j.nme.2018.05.014

M3 - Article

VL - 15

JO - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

SN - 2352-1791

ER -

ID: 4180427