Re: Rietveld

2018-08-22 Thread Leonid Solovyov
>Gauss and Legendre's work shows that science is not performed by individuals >in a vacuum. >Now we call it "Least Squares Refinement" and not "Gauss >Refinement". It seems that the basic collision is in the absence of strict and commonly accepted definition of the 'Rietveld Method' term. Does

Re: Rietveld

2018-08-22 Thread Alan Hewat
Leonid. Rietveld's code is indeed a specific type of profile refinement. Structure parameters are refined to fit the observed profile intensities using a least squares code similar to that used to fit integrated Bragg intensities at Oak Ridge - ORFLS (1962). From 1961 profile refinement methods wer

[SUSPECTED SPAM] Re: Rietveld

2018-08-22 Thread Leonid Solovyov
>That is why I prefer to use Rietveld's original term "profile refinement" for >all kinds of powder pattern refinement, and reference Loopstra and Rietveld >(1969) instead of >just Rietveld (1969) In the Introduction of Loopstra and Rietveld (1969) they referred to the approach as "the profile

Re: Rietveld

2018-08-22 Thread Le Bail Armel
Another example showing that Loopstra and van Laar (and Breed) recognized Rietveld as the main author as soon as 1968 in Physics Letters 26A(11) 1968, 526.   "The final proof that preferred orientation effects could in this way be removed from the results, was afforded by the excellent agreeme

Re: Rietveld

2018-08-22 Thread Alan Hewat
*> Another example.. Loopstra, van Laar and Breed Physics Letters 26A(11) 1968, 526* (AleB) Examples are easy. In Gibaud, Le Bail and Bulou J. Phys. C: Solid State Phys. 19 (1986) 4623 "*...the Rietveld program modified by Le Bai

RE:Rietveld

2018-08-22 Thread PAPOULAR Robert
ENOUGH ! Please remove me of your bloody list !! robert.papou...@cea.fr De : rietveld_l-requ...@ill.fr [rietveld_l-requ...@ill.fr] de la part de Alan Hewat [alan.he...@neutronoptics.com] Envoyé : mercredi 22 août 2018 14:20 À

Re: Rietveld

2018-08-22 Thread Le Bail Armel
Argh ! Shame on us three !   But be careful to not confuse an example with a counter-example ;-)   In 1986 had already started the times where Rietveld was so famous that giving his name in the paper was sufficient. You can probably find >20.000 such papers citing the Rietveld method and not

Re: Rietveld

2018-08-22 Thread Alan Hewat
*> Argh ! Shame on us three ! * Yes, we went too far. Sorry Armel. But Robert only has to read the footer at the bottom of every post to find how to remove himself. __ * Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE * +33.476.98.41.68 http://