Hi,
Sorry for that blank email... Since times are to old stories about the Rietveld method, I first heard about it in 1975-76 during my "3ème cycle" thesis in D. Grandjean laboratory, Rennes, France, under the direction of D. Louër. The thesis was about profile-shapes broadening due to powder small grain size. http://www.cristal.org/rapport/Le-Bail-These-3eme-Cycle.pdf I did not use the Rietveld method at that time but I remember that a Fortran version was in tests there, probably one of these 27 copies distributed by Hugo Rietveld himself to institutes all over the world. http://home.wxs.nl/~rietv025/Rietveld%20Method.docx My profile shapes were quite Lorentzian and there was considerable anisotropic broadening, something not yet accountable by the Rietveld method at that time focused on Gaussian peak shapes. I was not back about the Rietveld method before the XIII IUCr Congress, 1984, Hamburg, where I proposed a way to undertake such X-ray complex shapes: "The Rietveld method using an experimental profile convoluted by adjustable analytical function". This was the ARIT software later used in 1987 for intensities extraction purposes by iterating the Rietveld decomposition formula, leading to many SDPDs (Structure Determination by Powder Diffractometry). http://cristal.org/mespapiers-PDF/1984/1984-Rietveld-a31186.pdf http://www.cristal.org/arit.html Best, Armel PS- Better to write your own story clearly yourself before to leave the planet, even if nobody apparently read it. http://www.cristal.org/iniref/lbm-story/
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