X-ray intensity statistics of approximately centrosymmetric structures

Srinivasan, R. ; Swaminathan, P. (1975) X-ray intensity statistics of approximately centrosymmetric structures Current Science, 44 (3). pp. 71-73. ISSN 0011-3905

[img]
Preview
PDF - Publisher Version
822kB

Official URL: http://www.ias.ac.in/j_archive/currsci/44/3/71-73/...

Abstract

The joint probability distribution of X-ray structure factors of a non-centrosymmetric structure (true structure) and that of a centrosymmetric structure (assumed model) from which it deviates slightly, are given. These are characterised by a parameter D=<cos2πH.Δrj> where Δrj are the deviations of the N atoms from the centrosymmetric arrangements. The limiting forms of the distribution for D=0, and D=1 are respectively the acentric and centric distributions of Wilson. Intermediate values of D characterise different degrees of centrosymmetry of the structure. The parallelism of the results to another "approximately centrosymmetric" situation (Srinivasan, Indian J. Pure Appl. Phys., 1965, 3, 187), is pointed out.

Item Type:Article
Source:Copyright of this article belongs to Current Science Association.
ID Code:36650
Deposited On:12 Apr 2011 09:25
Last Modified:17 May 2016 19:36

Repository Staff Only: item control page