Influence of termal fluctuations in radiation damage cascade production and defect dynamics in tungsten

Courtin, Sergio and Cuesta Lopez, Santiago and Perlado Martín, José Manuel (2011). Influence of termal fluctuations in radiation damage cascade production and defect dynamics in tungsten. In: "15th International Conference on Emerging Nuclear Energy Systems, ICENES 2011", 15/05/2011 - 19/05/2011, San Francisco, CA, EEUU. pp..

Description

Title: Influence of termal fluctuations in radiation damage cascade production and defect dynamics in tungsten
Author/s:
  • Courtin, Sergio
  • Cuesta Lopez, Santiago
  • Perlado Martín, José Manuel
Item Type: Presentation at Congress or Conference (Poster)
Event Title: 15th International Conference on Emerging Nuclear Energy Systems, ICENES 2011
Event Dates: 15/05/2011 - 19/05/2011
Event Location: San Francisco, CA, EEUU
Title of Book: Proceedings of 15th International Conference on Emerging Nuclear Energy Systems, ICENES 2011
Date: 2011
Subjects:
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Nuclear [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The detailed study of the deterioration suffered by the materials of the components of a nuclear facility, in particular those forming part of the reactor core, is a topic of great interest which importance derives in large technological and economic implications. Since changes in the atomic-structural properties of relevant components pose a risk to the smooth operation with clear consequences for security and life of the plant, controlling these factors is essential in any development of engineering design and implementation. In recent times, tungsten has been proposed as a structural material based on its good resistance to radiation, but still needs to be done an extensive study on the influence of temperature on the behavior of this material under radiation damage. This work aims to contribute in this regard. Molecular Dynamics (MD) simulations were carried out to determine the influence of temperature fluctuations on radiation damage production and evolution in Tungsten. We have particularly focused our study in the dynamics of defect creation, recombination, and diffusion properties. PKA energies were sampled in a range from 5 to 50 KeV. Three different temperature scenarios were analyzed, from very low temperatures (0-200K), up to high temperature conditions (300-500 K). We studied the creation of defects, vacancies and interstitials, recombination rates, diffusion properties, cluster formation, their size and evolution. Simulations were performed using Lammps and the Zhou EAM potential for W

More information

Item ID: 11830
DC Identifier: http://oa.upm.es/11830/
OAI Identifier: oai:oa.upm.es:11830
Official URL: http://www.icenes2011.org/
Deposited by: Memoria Investigacion
Deposited on: 27 Sep 2012 11:11
Last Modified: 07 Sep 2017 17:57
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