Abstract
In order to determine the extinction ratio k of strongly scattering media, a simple technique for instrumental elimination of the initial curvilinear part of the dependence of optical density D on medium thickness h, D(h) = D 1 + kh, where D 1 is the apparent optical density of the surface layers of depth h c = 1/k (1/k is the depth of radiation penetration into the substance), is proposed. To this end, two-beam recording is used, with the sample of thickness h placed in the working cell and with the shield of thickness h 0, made of the same material, placed in the comparison cell, provided that h c h c. In this case, k = dD/h, where dD = D(h + 2h 0)-D(2h 0).
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