Theoretical and experimental investigation of the extinction in a dense distribution of particles: nonlocal effects.
We report experimental measurements of the extinction in a suspension of dielectric spheres. We find that the model originally introduced by Keller is in good agreement with the data provided that nonlocal effects are properly taken into account. We also find that the simple criterion establishing the regime of independent scattering previously introduced is not consistent with our data.
Hespel
L
L
Centre d'Etudes Scientifiques et Techniques d'Aquitaine, Commissariat à l'Energie Atomique, BP 2, 33114 Le Barp, France. Laurent.Hespel@onecert.fr
Mainguy
S
S
Greffet
J J
JJ