Accession Number : AD0017233


Title :   ON THE EFFECT OF BRANCHING AND POLYDISPERSITY ON THE ANGULAR DISTRIBUTION OF THE LIGHT SCATTERED BY GAUSSIAN COILS


Descriptive Note : Technical rept. no. 3


Corporate Author : HARVARD UNIV CAMBRIDGE MA GIBBS CHEMICAL LAB


Personal Author(s) : BENOIT, H


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/017233.pdf


Report Date : 07 Aug 1953


Pagination or Media Count : 7


Abstract : Analysis shows that the initial curvature of the distribution curve is always smaller for a polydisperse system than for a monodisperse system than for a monodisperse system. From this information and a knowledge of the position of the asymptote, it appears that the curve for a polydisperse case lies below the curve for a monodisperse case. The asymptotic behavior of the angular distribution function is shown to be unmodified by branching. These and other considerations indicate that the precise determination of the whole distribution curve is highly desirable, since it can give useful information about branching or polydispersity provided that only 1 of these 2 effects is present. If both effects are present, the asymptote only permits the determination of the size of unbranched molecules with molecular weight Mw.


Descriptors :   *LIGHT SCATTERING , MOLECULES , MOLECULAR WEIGHT , DISTRIBUTION CURVES , PRECISION , DETERMINATION , GAUSSIAN QUADRATURE , ANGLES , ASYMPTOTIC SERIES


Subject Categories : Optics


Distribution Statement : APPROVED FOR PUBLIC RELEASE