Prediction of the transparency in the visible range of x-ray absorbing nanocomposites built upon the assembly of LaF3 or LaPO4 nanoparticles with poly(methyl methacrylate) - Nanostructures et optique Accéder directement au contenu
Article Dans Une Revue Journal of the Optical Society of America B Année : 2012

Prediction of the transparency in the visible range of x-ray absorbing nanocomposites built upon the assembly of LaF3 or LaPO4 nanoparticles with poly(methyl methacrylate)

Résumé

A theoretical multiscale approach combining density functional theory and four-flux calculations based on the radiative transfer theory is used to prospect the optical properties of nanocomposite materials composed of inorganic nanoparticles of lanthanum-containing compounds ( LaF 3 or LaPO 4 ) embedded in Poly(methyl methacrylate) (PMMA). This theoretical investigation shows that a potential route to produce lead-free x-ray shielding screens with high transparency in the visible range ( > 70 % of incident light) may consist in incorporating colorless LaF 3 or LaPO 4 spherical particles with a diameter lower than 6 nm in a PMMA panel from a minimum thickness of 3 mm with a volumetric fraction of at least 10%. In terms of x-ray attenuation, this would lead to lead equivalency of 0.1 mm (lead foil).
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Dates et versions

hal-00866167 , version 1 (30-10-2023)

Identifiants

Citer

Fady El Haber, Xavier Rocquefelte, Christine Andraud, Bouhalouane Amrani, Stéphane Jobic, et al.. Prediction of the transparency in the visible range of x-ray absorbing nanocomposites built upon the assembly of LaF3 or LaPO4 nanoparticles with poly(methyl methacrylate). Journal of the Optical Society of America B, 2012, 29 (3), pp.305-311. ⟨10.1364/JOSAB.29.000305⟩. ⟨hal-00866167⟩
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