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首页> 外文期刊>Journal of holography and speckle >Determination of Diffusion Coefficient of Lactose Solution
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Determination of Diffusion Coefficient of Lactose Solution

机译：乳糖溶液扩散系数的测定

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Holography is an interference method of recording the light waves diffracted by a subject illuminated with coherent light. Holographic interferometry (H. I.) is one of the most important applications of holography. It is concerned with the formation and interpretation of fringe patterns, which appear when a wave generated at some earlier time and stored in a hologram is later reconstructed by interfering with a comparison wave. We report a technique, which uses double exposure holographic interferometry together with a simple mathematical interpretation, which allows immediate deduction of the diffusion coefficient. We have tested the method using diffusion of a 0.4 N lactose solution into pure distilled water. The interferograms are also obtained by lowering the concentration of lactose solution from 0.4 N up to 0.3 N. We have obtained distinct and well resolved interference fringes that are used for determining diffusion coefficients. It is observed that as the concentration of solution decreases the values of diffusion coefficients increases by very small amount. It is noticed that theses experimentally determined values of diffusion coefficient are in very good agreement with the standard values.
机译：全息术是一种干涉方法，用于记录被相干光照射的物体衍射的光波。全息干涉术（H.I.）是全息术的最重要的应用之一。它涉及条纹图案的形成和解释，条纹图案的出现和解释是在较早时间产生并存储在全息图中的波后来通过干扰比较波而重建时出现的。我们报告了一种技术，该技术使用两次曝光全息干涉术以及简单的数学解释，从而可以立即推断出扩散系数。我们已经测试了将0.4 N乳糖溶液扩散到纯蒸馏水中的方法。还可通过将乳糖溶液的浓度从0.4 N降低到0.3 N来获得干涉图。我们已经获得了清晰可辨的干涉条纹，用于确定扩散系数。可以看出，随着溶液浓度的降低，扩散系数的值会增加很小的量。注意到这些实验确定的扩散系数值与标准值非常吻合。

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