RE: new gsas

2007-05-09 Thread Ling Yang
thanks. Sincerely, Ling Yang -Original Message- From: Von Dreele, Robert B. [mailto:[EMAIL PROTECTED] Sent: Thursday, May 03, 2007 5:26 PM To: rietveld_l@ill.fr Subject: new gsas Hi All, New versions of GSAS for Windows and Fedora-5 have been placed on the CCP14 web server. The changes

Is it possible in GSAS to control the value of certain parameters in a

2007-04-23 Thread ling yang
For example, Uiso0, 0F1, etc Thanks a lot. Sincerely, Ling Yang Current address: Bldg 8600, MS 6460 SNS, Oak Ridge National Laboratory Oak Ridge, TN 37830 Tel: 865 574 0350 Fax: 865 241 5991

May I ask where to buy some plastic balls and rods

2004-10-13 Thread ling yang
to build a lattice? It will be better if they are colorful and flexible to change the bondangle. Thanks. Sincerely, Ling YangDept of CME, Univ of CincinnatiCurrent address:Bldg 8600, MS 6474SNS, Oak Ridge National LaboratoryOak Ridge, TN 37830Tel: 865 574 0350Fax: 865 241 5177

A question about stacking faults

2004-10-06 Thread ling yang
Dear all, Are there anybody experienced in stacking faults? Please help me! Basically I'm following Warren's book and R. Berliner's paper to simulate the possible effects of stacking faults on diffraction patterns. I did generate a set of patterns for fcc, butthere are some questions I'm

Has anybody answered Yong-Il Kim 's question about occupancy

2004-04-15 Thread ling yang
I have the same question, so post his question here: Dears all, In the structural refinement of ABO3 type, e.g. A1-xCxB1-yCyO3 using GSAS. The dopant (atom C) may be occupied two atomic sites, A and B. Therefore the occupancy constraint should be considered. In order to perform the structural

[no subject]

2004-03-26 Thread ling yang
Dear all, I have some questions concerning the refinement of the gppd data and would appreciate your advice: 1) The patterns show some kind of texture(up and down on the error curve), but the sample is powder(although maybe the granules are large) and should be isotropic. All banks show

Rawplot refinement formula

2004-03-22 Thread ling yang
Hi, May I ask what is the exact formulaused byrawplot refinement? There are 6 parameters: pos, int, alp, bet, sig, gam, what are their meanings? If i want to compare the changes of a peak at different banks or different temperature, what is the most important parameter? Thanks:) Ling