Small-angle scattering of laser radiation by stable micron particles in twice-distilled water

Investigation of the nature of light scattering by water

“…Studies of small-angle scattering of laser radiation by the water have detected a presence of micron-sized scattering centres. In opinion of the authors [10], this indirectly confirms a hypothesis of its bubston nature, though no immediate proofs of such an origin of these centres have been presented. In this work we present results concerning dependences of light scattering by water on the intensity of incident radiation, the content of ions and gases dissolved in it, the water temperature, mechanical action applied to it, as well as the influence of phase transitions "vapour-water" and "ice-water".…”

“…Further on they are simpler referred to as large, middle and small (the corresponding radii of the centres being r > 0.9 µm, 0.4 ≤ r ≤ 0.9 µm and r < 0.4 µm, respectively). It is worth noticing that there is good agreement between the size of large centres observed in the angular region Θ ≤ 10 0 and the value r = 1.3 µm given in the study [10]. The latter corresponds to the maximum of size distribution function of scattering particles in the given angular region.…”

Application limitedness of the model of spheroidal scatterers for describing scattering properties of titanium dioxide

“…Some differences are observed in the region of small and large angles. are characterized by small differences in the angular positions of the extreme values and in the extreme values themselves, which seems to be typical for media with particles hav ing an irregular shape [11,13,14]. The deviation of the shape of the particles from a spheroid manifests itself to the largest extent in the difference between the experimental and calculated dependences f 12 (θ).…”

“…The measurements could not be performed at scattering angles larger than 150° due to the fact that the photodetecting part of the unit overlapped the laser radiation. At scattering angles less than 10°, the part of the radiation that appears in the detected signal due to the scattering on windows and walls of the cell and, possibly, on bubston clusters [11] is large. The concentration of particles in the suspension was chosen to be such that, on the one hand, a satisfactory signal to noise ratio is ensured and, on the other hand, the scattering can be consid ered as single.…”

Effect of the uncertainty of the shape of a distribution on its parameters retrieval using the scattering matrix of quartz suspension

“…The measurements could not be performed at scattering angles larger than 150° due to the fact that the photodetecting part of the unit overlapped the laser radiation. At scattering angles less than 10°, the part of the radiation that appears in the detected signal due to the scattering on windows and walls of the cell and, possibly, on bubston clusters [12] is large. The concentration of particles in the suspension was chosen such that, on the one hand, a satisfactory signal to noise ratio is ensured and, on the other hand, the scattering can be considered as single.…”