کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1787963 | 1023457 | 2006 | 4 صفحه PDF | دانلود رایگان |

We analyse measurements of the optical extinction coefficient for fluorozirconate glasses containing a volume fraction of ∼0.2 of barium chloride nano-particles. We find that the glass ceramics are about a factor of six more transparent than predicted by Rayleigh scattering theory, based on estimates of particle sizes from X-ray diffraction and electron microscopy measurements. A numerical simulation of scattering using the discrete-dipole approximation has been made in order to investigate whether this particular discrepancy, and the “ultra-transparency” observed in other glass ceramics in general, can be explained by particle proximity and interaction effects as has been proposed in the literature. The simulated scattering system behaves essentially as a collection of independent scatterers up to a volume fraction of at least 25%, and so these effects are not responsible for the high transparency in this system.
Journal: Current Applied Physics - Volume 6, Issue 3, June 2006, Pages 355–358