caa a22 4500 467916063 CHVBK 20180406152903.0 cr unu---uuuuu 170328e20061001xx s 000 0 eng 10.1134/S0020441206050150 doi (NATIONALLICENCE)springer-10.1134/S0020441206050150 Aulov V. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, Profsoyuznaya ul. 70, 117393, Moscow, Russia aut A simple method for determining the extinction ratio of strongly scattering media [Elektronische Daten] [V. Aulov] 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 0 < h. The extinction ratio is found from the relation k = dD/dh, where dD = D(h)-D(h 0) is the difference of the optical densities in the working cell and in the comparison cell and dh = h-h 0 is the difference of the thicknesses. For samples with h < h c, two shields of thickness h 0 are placed in each cell (in the working cell, in front of the sample and behind it) provided that h 0 > h c. In this case, k = dD/h, where dD = D(h + 2h 0)-D(2h 0). Pleiades Publishing, Inc., 2006 42.15.Eq nationallicence 42.25.Gy nationallicence 78.20.-e nationallicence Instruments and Experimental Techniques Nauka/Interperiodica 49/5(2006-10-01), 693-695 0020-4412 49:5<693 2006 49 10786 https://doi.org/10.1134/S0020441206050150 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0020441206050150 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Aulov V. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, Profsoyuznaya ul. 70, 117393, Moscow, Russia aut NATIONALLICENCE 773 0- Instruments and Experimental Techniques Nauka/Interperiodica 49/5(2006-10-01), 693-695 0020-4412 49:5<693 2006 49 10786 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer