Numerical analysis of TDS spectra under high and low flux plasma exposure conditions

Dmitry Terentyev; Anastasiia Bakaeva; Peter Grigorev; Luxherta Buzi; Gregory De Temmerman; Guido Van Oost; Jean-Marie Noterdaeme

doi:10.1088/0031-8949/T167/1/014039

Numerical analysis of TDS spectra under high and low flux plasma exposure conditions

Dmitry Terentyev, Anastasiia Bakaeva, Peter Grigorev, Luxherta Buzi, Gregory De Temmerman, Guido Van Oost, Jean-Marie Noterdaeme

Research output › peer-review

Abstract

A recently developed numerical model, based on the dislocation-driven nucleation of gas bubbles, is used to analyse experimental results on deuterium retention in tungsten under ITER relevant plasma exposure conditions. Focus is placed on understanding the relation between exposure temperature and flux on primary features of thermal desorption spectra: peak positions and intensities of the desorption flux. The model allows one to relate the peak positions with the size of plasma induced deuterium bubbles and envisage exposure conditions (temperature and flux) for their formation. Based on the performed analysis, dedicated experimental conditions to validate the model are proposed.

Original language	English
Title of host publication	PHYSICA SCRIPTA
Subtitle of host publication	15th International Conference on Plasma-Facing Materials and Components for Fusion Applications (PFMC)
Number of pages	5
Volume	T167
DOIs	https://doi.org/10.1088/0031-8949/T167/1/014039
State	Published - 20 Feb 2016
Event	PFMC 2015 - 15th international conference on Plasma-facing materials and components for fusion applications - Aix-en-Provence Duration: 18 May 2015 → 22 May 2015 http://www.materials.cea.fr/en/Phocea/Vie_des_labos/Seminaires/index.php?id=28

Publication series

Name	Physica Scripta
Publisher	IOP - IOP Publishing
ISSN (Print)	0031-8949

Conference

Conference	PFMC 2015 - 15th international conference on Plasma-facing materials and components for fusion applications
Country/Territory	France
City	Aix-en-Provence
Period	2015-05-18 → 2015-05-22
Internet address	http://www.materials.cea.fr/en/Phocea/Vie_des_labos/Seminaires/index.php?id=28

Access to Document

10.1088/0031-8949/T167/1/014039License: Unspecified

Cite this

Terentyev, D., Bakaeva, A., Grigorev, P., Buzi, L., De Temmerman, G., Van Oost, G., & Noterdaeme, J.-M. (2016). Numerical analysis of TDS spectra under high and low flux plasma exposure conditions. In PHYSICA SCRIPTA: 15th International Conference on Plasma-Facing Materials and Components for Fusion Applications (PFMC) (Vol. T167). (Physica Scripta). https://doi.org/10.1088/0031-8949/T167/1/014039

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abstract = "A recently developed numerical model, based on the dislocation-driven nucleation of gas bubbles, is used to analyse experimental results on deuterium retention in tungsten under ITER relevant plasma exposure conditions. Focus is placed on understanding the relation between exposure temperature and flux on primary features of thermal desorption spectra: peak positions and intensities of the desorption flux. The model allows one to relate the peak positions with the size of plasma induced deuterium bubbles and envisage exposure conditions (temperature and flux) for their formation. Based on the performed analysis, dedicated experimental conditions to validate the model are proposed.",

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author = "Dmitry Terentyev and Anastasiia Bakaeva and Peter Grigorev and Luxherta Buzi and {De Temmerman}, Gregory and {Van Oost}, Guido and Jean-Marie Noterdaeme",

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Terentyev, D , Bakaeva, A, Grigorev, P, Buzi, L, De Temmerman, G, Van Oost, G & Noterdaeme, J-M 2016, Numerical analysis of TDS spectra under high and low flux plasma exposure conditions. in PHYSICA SCRIPTA: 15th International Conference on Plasma-Facing Materials and Components for Fusion Applications (PFMC). vol. T167, Physica Scripta, PFMC 2015 - 15th international conference on Plasma-facing materials and components for fusion applications, Aix-en-Provence, France, 2015-05-18. https://doi.org/10.1088/0031-8949/T167/1/014039

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AU - Buzi, Luxherta

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AB - A recently developed numerical model, based on the dislocation-driven nucleation of gas bubbles, is used to analyse experimental results on deuterium retention in tungsten under ITER relevant plasma exposure conditions. Focus is placed on understanding the relation between exposure temperature and flux on primary features of thermal desorption spectra: peak positions and intensities of the desorption flux. The model allows one to relate the peak positions with the size of plasma induced deuterium bubbles and envisage exposure conditions (temperature and flux) for their formation. Based on the performed analysis, dedicated experimental conditions to validate the model are proposed.

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KW - blisters

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