Numéro
J. Phys. IV France
Volume 7, Numéro C2, Avril 1997
Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure
Page(s) C2-157 - C2-158
DOI https://doi.org/10.1051/jp4/1997149
Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure

J. Phys. IV France 7 (1997) C2-157-C2-158

DOI: 10.1051/jp4/1997149

Determination of Mg Site Geometry in Pyroxenes by Full Multiple Scattering Calculations

D. Cabaret1, Ph. Sainctavit1, 2, Ph. Ildefonse3 and A.M. Flank2

1  LMCP, URA 9 du CNRS, 4 place Jussieu, 75252 Paris cedex 05, France
2  LURE, bâtiment 209d, Université Paris-Sud, 91405 Orsay, France
3  LMCP, URA 9 du CNRS,. place Jussieu, 75252 Paris cedex 05 France


Abstract
We present a comparison between experiment and Full Multiple Scattering calculations at the magnesium K-edge for two pyroxenes: diopside where magnesium atoms are in M1 site and enstatite where magnesium atoms are in two distinct sites M1 and M2. The purpose of this work is to determine how the number of octahedral sites on the one hand and the site distortion on the other hand affect the magnesium K-edge XANES spectra.



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