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Comment on Correlation effects in small‐angle neutron scattering from closely packed spheres by Bertram (1996)
Author(s) -
Skov Pedersen J.
Publication year - 1998
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889897012703
Subject(s) - spheres , dispersity , scattering , hard spheres , small angle scattering , neutron scattering , small angle x ray scattering , expression (computer science) , physics , intensity (physics) , statistical physics , chemistry , thermodynamics , optics , polymer chemistry , computer science , astronomy , programming language
Simulations of the scattering intensity of closely packed polydisperse spheres have recently been presented by Bertram [ J. Appl. Cryst. (1996), 29 , 682–685]. In the present Comment it is pointed out that the approach used by Bertram for the simulation does not give configurations which are representative of the thermodynamic equilibrium state. Bertram compared his results with an expression, claimed by Bertram to be an alternative to the `local monodisperse' approximation previously presented by Pedersen [ J. Appl. Cryst. (1994), 27 , 595–608]. Bertram's expression is in fact identical to the `local monodisperse' approximation.