Observatorio de I+D+i UPM

Memorias de investigación
Capítulo de libro:
Molecular dynamics study of defect in amorphous silica; generation and migration
Año:2008
Áreas de investigación
  • Ingeniería naval
Datos
Descripción
Fused silica is a material of interest due to its increasing number of applications in many different technology fields. In thermonuclear fusion it is one of candidate materials for both final focusing optics of lasers for NIF and future inertial fusion reactors and diagnostics of the Safety and Control Systems of the ITER machine as well as DEMO magnetic fusion reactors. In operation, these materials will be exposed to high neutron irradiation fluxes and it can result in point defect. Materials properties of interest (optical absorption, radioluminescence, mechanical properties,...) are closely related to the presence of defects. These defects can be generated directly by irradiation or by the presence of impurities in the material. We present molecular dynamic simulation of displacement cascade due to energetic recoils in amorphous silica without hydrogen atoms and with 1% of hydrogen atoms trying to identify defects formation and we present molecular dynamics simulations to study the effects of hydrogen atoms in this material and their interaction with defects; The diffusion coefficients and mechanisms of H mobility in fused silica has been calculated and compared with those existing in the literature. The interatomic potential developed by Feuston and Garofallini has been used in both studies.
Internacional
Si
DOI
10.1088/1742-6596/112/3/032032
Edición del Libro
0
Editorial del Libro
ISBN
1742-6596
Serie
Título del Libro
Journal of Physics: Conference Series
Desde página
1
Hasta página
5
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: ANGEL IBARRA
  • Autor: J. MOLLA
  • Autor: Jose Manuel Perlado Martin (UPM)
  • Autor: MARIA JOSE CATURLA
  • Autor: FERNANDO MOTA
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Fusión Nuclear Inercial y Tecnología de fusión
  • Departamento: Ingeniería Nuclear
  • Centro o Instituto I+D+i: Instituto de Fusión Nuclear
S2i 2022 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)