The significance of the phase synthesis

Srinivasan, R. (1961) The significance of the phase synthesis Proceedings of the Indian Academy of Sciences, Section A, 53 (5). pp. 252-264. ISSN 0370-0089

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This paper gives an account of the results of the tests that have been carried out to assess the relative importance of the phase angles and structure amplitudes in a Fourier synthesis. For this, the phase factors, eia, have been combined in different ways with structure amplitudes such as when the latter are (a) replaced by the r.m.s. of the structure amplitudes (i.e., by √Σfi2), (b) randomly chosen from the set of correct structure amplitudes, (c) made us much anti-correlated (about the mean) with the correct ones as possible and (d) taken to be those of an entirely different structure. The above syntheses which are only modifications of the phase synthesis, eia, have been tested on both the centrosymmetric and non-centrosymmetric projections of a known structure. They strongly establish the greater importance of the phase angles in a Fourier synthesis.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
ID Code:36470
Deposited On:12 Apr 2011 09:26
Last Modified:17 May 2016 19:25

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