Re: Powder Diffraction In Q-Space

2007-03-20 Thread pstephens
Simon, You left a couple of jackets at my house - they're on their way back to you. Did you see anything interesting with the realtor? Do let us know if you'll be coming back for another visit with your wife. Best, Peter ^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~ Peter W. Stephens

OOPS.

2007-03-20 Thread pstephens
Sorry about that. ^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~ Peter W. Stephens Professor, Department of Physics and Astronomy Stony Brook University Stony Brook, NY 11794-3800 fax 631-632-8176

Absorption in expgui

2007-03-20 Thread Duncan, Jo
Hello all, Using expgui (GSAS) and I am trying to get some bragg-bretano flat plate surface roughness corrections on the go. I have used the absorption for cylindrical samples (tof) when I define the number but whenever I try to refine the quantity and run genles it resets to zero and unticks

RE: Absorption in expgui

2007-03-20 Thread Leopoldo Suescun
Brian and Jo, It happens to me that the flag unticks itself only when you open the dropdown menu to select the correction and then tick the flag. If after the first cycle with the flag unticked you tick again without opening the menu the correction is applied nicely and the flag remains ticked.

Re: Problems using TOPAS R (Rietveld refinement)

2007-03-20 Thread Reinhard Kleeberg
Dear Leandro Bravo, some comments below: Leandro Bravo schrieb: In the refinement of chlorite minerals with well defined disordering (layers shifting by exactly b/3 along the three pseudohexagonal Y axis), you separate the peaks into k = 3.n (relative sharp, less intensive peak) and k

Re: Problems using TOPAS R (Rietveld refinement)

2007-03-20 Thread Lubomir Smrcok
Gentlemen, I've been listening for a week or so and I am really wondering what do you want to get ... Actually you are setting up a refinement, whose results will be, at least, inaccurate. I am always surprised by attempts to refine crystal structure of a disordered sheet silicate from powders,