Data di Pubblicazione:
2009
Citazione:
Scattering from anisotropic particles : a challenge for the optical theorem? / V. Degiorgio, M.A.C. Potenza, M. Giglio. - In: THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER. - ISSN 1292-8941. - 29:4(2009), pp. 379-382.
Abstract:
The optical theorem is a very general law of scattering theory that has been discussed almost
exclusively for spherically symmetric scatterers. In this work we present the extension to the case of
anisotropic scatterers, by treating explicitly the problem within the Rayleigh-Gans approximation.Working
formulas for the fluctuating components of the forward-scattering amplitude SV V (0) and SVH(0) are given,
and a paradox concerning the applicability of the optical theorem is solved. While the SVH(0) cannot
interfere with the incoming vertical polarized beam, we show that SV V (0) fluctuates around a non-zero
average so to compensate at any instant for the integrated scattered intensity at both polarizations. The
results are relevant for the design and interpretation of experiments of dynamic depolarized light scattering
in the forward direction.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
diffraction and scattering ; disperse systems ; complex fluids ; classical
field theories ; scattering ; polarization
Elenco autori:
V. Degiorgio, M.A.C. Potenza, M. Giglio
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