Effect of defect accumulation on ion-beam damage morphology by electronic excitation in lithium niobate: A MonteCarlo approach

Rivera de Mena, Antonio; Crespillo Almenara, Miguel; Olivares Roza, Jimena; García, G. y Argullo Lopez, Fernando (2010). Effect of defect accumulation on ion-beam damage morphology by electronic excitation in lithium niobate: A MonteCarlo approach. "Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms", v. 268 (n. 13); pp. 2249-2256. ISSN 0168-583X. https://doi.org/10.1016/j.nimb.2010.03.031.

Descripción

Título: Effect of defect accumulation on ion-beam damage morphology by electronic excitation in lithium niobate: A MonteCarlo approach
Autor/es:
  • Rivera de Mena, Antonio
  • Crespillo Almenara, Miguel
  • Olivares Roza, Jimena
  • García, G.
  • Argullo Lopez, Fernando
Tipo de Documento: Artículo
Título de Revista/Publicación: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Fecha: Julio 2010
Volumen: 268
Materias:
Palabras Clave Informales: Damage; Excitons; Ion-beams; Thermal spike; Rutherford backscattering channeling; Amorphization threshold; MonteCarlo simulations
Escuela: Otros Centros UPM
Departamento: Ingeniería Nuclear [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

We present a MonteCarlo approach to the non-radiative exciton-decay model recently proposed to describe ion-beam damage in LiNbO3 produced in the electronic excitation regime. It takes into account the statistical (random) spatial distribution of ion impacts on the crystal surface. The MonteCarlo approach is necessary to simulate the evolution of the damage morphology with irradiation fluence from the single track regime to the overlapping track regime. A detailed comparison between the morphologies found for sub-threshold and above threshold irradiations is presented. Moreover, a good representation of the Avrami’s type kinetics for amorphization has been achieved and it is in fair accordance with experiment. For moderate fluences where homogeneous amorphous layers are generated, the new approach predicts that the amorphous and crystalline layers are separated by a diffuse (thick) boundary that includes a mixed amorphous-crystalline composition.

Más información

ID de Registro: 6725
Identificador DC: http://oa.upm.es/6725/
Identificador OAI: oai:oa.upm.es:6725
Identificador DOI: 10.1016/j.nimb.2010.03.031
URL Oficial: http://www.sciencedirect.com/science/journal/0168583X
Depositado por: Memoria Investigacion
Depositado el: 27 Abr 2011 09:08
Ultima Modificación: 20 Abr 2016 15:54
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