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Determination of characteristics of anomalous light scattering in the gradient solutions using electronic speckle-pattern interferometry control of concentration distribution

Bulavin L. A., GotsulskiyV. Ya. and Popov A. Yu.

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Abstract. We suggest a method for monitoring concentration dependences of the light scattering occurring in gradient solutions prepared by diffusion in the gravitational field. In this method, an electronic speckle-pattern interferometry (ESPI) approach is employed for non-contact measurements of spatial distribution of the solution concentrations. The method is applied to water–glycerol solutions. It has enabled us to study, in a simple way, the anomalous scattering peaks hardly observable with common techniques. The data obtained using our method are well reproducible and reliable.

Keywords: anomalous light scattering, aqueous solutions, electronic speckle pattern interferometry 

PACS: 42.25.Fx, 42.25.Hz, 42.60.By, 61.20.Gy
UDC: 535.36, 535.417, 532.74, 681.787.7
Ukr. J. Phys. Opt. 15 216-226
doi: 10.3116/16091833/15/4/216/2014

Received: 15.08.2014

Анотація. У роботі запропоновано метод моніторингу концентраційних залежностей розсіяння світла в градієнтних розчинах, приготовлених дифузією в гравітаційному полі. У рамках цього методу для безконтактного вимірювання просторового розподілу концентрації розчинів вжито електронну спекл-інтерферометрію. Метод застосовано у вивченні розчину вода-гліцерол для спрощення досліджень аномальних піків розсіяння, які важко спостерігати звичайними методами. Дані, одержані за нашим методом, відтворюються з достатньою точністю. 
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