Details

Autor(en) / Beteiligte

• Glatter, Otto
• Hofer, Michael
• Jorde, Christian
• Eigner, Wolf-Dieter

Titel

Interpretation of elastic light-scattering data in real space

Ist Teil von

• Journal of colloid and interface science, 1985-01, Vol.105 (2), p.577-586

Ort / Verlag

San Diego, CA: Elsevier Inc

Erscheinungsjahr

1985

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• Particles in the size range 200 ⩽ D ⩽ 1200 nm have enough information in their scattering function for a general interpretation procedure. The experimenter is faced with two basic problems. There is an essential loss of information caused by the cutoff, and the scattering theory of Mie has to be used for the description of the scattering process. It has been proved previously that the interpretation of scattering results is much easier in real space (distance distribution function p(r)) than in reciprocal space. It will be shown to what extent it is possible to apply the corresponding techniques to light-scattering data. There exists no analytical method for the transformation of Mie scattering data into real space. Therefore we have used Fourier transformation as an approximation. The results show that this approximation gives reasonable results for ideal data as well as for data with up to 10% statistical noise. The main influence of the Mie contribution is oscillations outside the maximum particle dimension. The shape of the part up to the maximum dimension containing the important information about the structure is nearly unchanged. Thus it is possible, for example, to deconvolute this function and calculate a radial polarizability profile. The method has been tested successfully on a solution of Latex particles of 481-nm diameter.