DYNAMIC LIGHT-SCATTERING BY NONERGODIC MEDIA

被引：26
|
作者：
PUSEY, PN
机构：
[1] Department of Physics, University of Edinburgh, Edinburgh, EH9 3JZ, King's Buildings, Mayfield Road
来源：
MACROMOLECULAR SYMPOSIA | 1994年 / 79卷
关键词：
D O I：
10.1002/masy.19940790104
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The theory of dynamic light scattering (DLS) by non-ergodic media, systems such as polymeric gels whose density fluctuations are partially ''frozen'', is discussed. We derive the relationship between the time-averaged time correlation function of the scattered intensity, the quantity measured in a single DLS experiment, and the ensemble-averaged correlation function of the sample's density fluctuations. The connection between DLS, speckle and the reciprocal-space structure of the medium is also discussed.
引用
收藏
页码：17 / 30
页数：14
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