Memorias de investigación
Research Publications in journals:
A multiscale approach to defect evolution in tungsten under helium irradiation
Year:2015

Research Areas
  • Engineering

Information
Abstract
We have studied He irradiation in tungsten from a multiscale point of view: Density Functional Theory (DFT) to obtain the binding energies of He to vacancy clusters, Binary Collision Approximation (BCA) and Molecular Dynamics (MD) to produce defect cascades and Object Kinetic Monte Carlo (OKMC) to study their evolution in larger temporal and spatial scales. A comparison between BCA and MD cascades produced by PKA at different energies has been done at different temperatures: at high temperature and at high PKA energies the OKMC results clearly depend on the defect cascades. 625 keV pulsed He ion irradiation has been simulated with cascades obtained by means of BCA and MD. The results show that in the case of ion irradiation, BCA results can provide good OKMC results. However, in the case of neutron irradiation producing high energy PKAs, BCA cascades clearly overestimate the number of FPs, which may have a strong influence on the OKMC results.
International
Si
JCR
Si
Title
NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH B
ISBN
0167-5087
Impact factor JCR
Impact info
Volume
352
Journal number
From page
100
To page
103
Month
SIN MES
Ranking
Participants
  • Autor: Gonzalo Valles Alberdi UPM
  • Autor: A.L. Cazalilla Instituto de Fusión Nuclear
  • Autor: C. González Facultad de Ciencias ¿ Universidad de Oviedo
  • Autor: I. Martín-Bragado IMDEA Materials Institute,
  • Autor: Alejandro Prada Valverde UPM
  • Autor: R. Iglesias Facultad de Ciencias ¿ Universidad de Oviedo
  • Autor: Jose Manuel Perlado Martin UPM
  • Autor: Antonio Juan Rivera de Mena UPM

Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Fusión Nuclear Inercial y Tecnología de fusión
  • Centro o Instituto I+D+i: Instituto de Fusión Nuclear