THE RANDOM PHASE APPROXIMATION - A SIMPLE DEMONSTRATION

被引：0
|
作者：
BENOIT, H
BENMOUNA, M
VILGIS, T
机构：
[1] UNIV TLEMCEN,INES,TLEMCEN,ALGERIA
[2] MAX PLANCK INST POLYMER RES,W-6500 MAINZ,GERMANY
来源：
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II | 1991年 / 313卷 / 08期
关键词：
D O I：
暂无
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Experimentalists frequently use a formula established by de Gennes and based on what has been called the "Random phase approximation" technique. It allows the evaluation of the elastic scattering intensity by a one phase system containing different kinds of polymers. If one extracts from the partial structure factor S(ij) (q) its intermolecular part Q(ij) (q) one can show that, when there are no interactions, one recovers the same result writing simply: Q(ii) Q(ij) = Q(ij)2.
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页码：869 / 872
页数：4
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