CRITICAL ANALYSIS OF NONNUCLEAR ELECTRON-DENSITY MAXIMA AND THE MAXIMUM-ENTROPY METHOD

Citation
Ry. Devries et al., CRITICAL ANALYSIS OF NONNUCLEAR ELECTRON-DENSITY MAXIMA AND THE MAXIMUM-ENTROPY METHOD, Physical review letters, 77(9), 1996, pp. 1719-1722
Citations number
23
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
ISSN journal
0031-9007
Volume
77
Issue
9
Year of publication
1996
Pages
1719 - 1722
Database
ISI
SICI code
0031-9007(1996)77:9<1719:CAONEM>2.0.ZU;2-J
Abstract
Experimental evidence for the existence of non-nuclear maxima in charg e densities is questioned. It is shown that the non-nuclear maxima rep orted for silicon are artifacts of the maximum entropy method that was used to analyze the x-ray diffraction data. This method can be improv ed by the use of appropriate prior information. We report systematic t ests of the improved method leading to the absence of non-nuclear maxi ma in Si. Likewise, the non-nuclear maxima reported earlier in berylli um are not substantiated.