> In the process of coupling one of our diffractometers with a rotating
> anode X-ray source I find I need to buy a new monochromator crystal, and
> collimation slits controllable in size from 1mm to 10 micron. I am
> asking the pooled experience represented here for any suggestions on
> wher
Dear all,
I am very interested in doing refinaments by using Rietveld method in SiC
obtained by sol-gel.
Howerver, I need some information about this method of processing. Could
anyone tell me where I can find some referents?.
Thanks you very much.
Hi,
I have some Polaris data which I have been using with VMS GSAS, but I
wanted to use chemical constrains so I transferred the data (as an ASCII
file) to a PC. I tranferred two datasets: xray and neutrons, and PC GSAS
reads (and refines) successfully the xray dataset. I can plot the neutron
da
Dear all,
I would like to know some referents about sol-gel applied to SiC.
Could anyone help me?
Thanks you very much.
Hello everyone,
In the process of coupling one of our diffractometers with a rotating anode
X-ray source I find I need to buy a new monochromator crystal, and collimation slits
controllable in size from 1mm to 10 micron. I am asking the pooled experience
represented here for any sugge
OK, so iff the structure can be properly described by both datasets, the
main problem that we have is what to do with the esd's and chi**2. It seems
that the best thing is for the refinement software to give individual values
for each refinement and then an overall value (perhaps rescaled). At
Well, it looks like my "feeling" might have been wrong this time. The way
you may want to go through the "tedious" proof is the following.
1) You construct the Aij matrix (also sometimes called the Hessian matrix)
Aij=D^2chi^2/DxiDxj (D is the partial derivative sign. E-mail is
