Theory of dynamic scattering from copolymer solutions using the random phase approximation

1987 ◽  
Vol 20 (10) ◽  
pp. 2620-2624 ◽  
Author(s):  
M. Benmouna ◽  
H. Benoit ◽  
R. Borsali ◽  
M. Duval
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation ◽  
Dynamic Scattering

A practical method to account for random phase approximation effects on the dynamic scattering of multi-component polymer systems

2020 ◽  
Vol 152 (5) ◽  
pp. 054901
Author(s):  
M. Monkenbusch ◽  
M. Kruteva ◽  
M. Zamponi ◽  
L. Willner ◽  
I. Hoffman ◽  
...  
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Practical Method ◽  
Phase Approximation ◽  
Polymer Systems ◽  
Dynamic Scattering

Interpretation of Preferential Adsorption Using Random Phase Approximation Theory

1995 ◽  
Vol 60 (10) ◽  
pp. 1641-1652 ◽  
Author(s):  
Henri C. Benoît ◽  
Claude Strazielle
Keyword(s):  
Approximation Theory ◽  
Random Phase Approximation ◽  
Virial Coefficient ◽  
Random Phase ◽  
Second Virial Coefficient ◽  
Solvent Mixture ◽  
Gyration Radius ◽  
Thermodynamic Quantities ◽  
Phase Approximation ◽  
Preferential Adsorption

It has been shown that in light scattering experiments with polymers replacement of a solvent by a solvent mixture causes problems due to preferential adsorption of one of the solvents. The present paper extends this theory to be applicable to any angle of observation and any concentration by using the random phase approximation theory proposed by de Gennes. The corresponding formulas provide expressions for molecular weight, gyration radius, and the second virial coefficient, which enables measurements of these quantities provided enough information on molecular and thermodynamic quantities is available.

Neutrino reactions onC12by the quasiparticle random-phase approximation (QRPA)

2010 ◽  
Vol 81 (2) ◽  
Author(s):  
Myung-Ki Cheoun ◽  
Eunja Ha ◽  
Su Youn Lee ◽  
K. S. Kim ◽  
W. Y. So ◽  
...  
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation ◽  
Quasiparticle Random Phase Approximation

Communication: Analytic gradients in the random-phase approximation

2013 ◽  
Vol 139 (8) ◽  
pp. 081101 ◽  
Author(s):  
Johannes Rekkedal ◽  
Sonia Coriani ◽  
Maria Francesca Iozzi ◽  
Andrew M. Teale ◽  
Trygve Helgaker ◽  
...  
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation
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