RE: fractional occupancy and composition within GSAS

2009-12-02 Thread Peter Y. Zavalij
2009 4:47 PM To: Irvin Telepeni; rietveld_l@ill.fr; Leopoldo Sescun Subject: Re: fractional occupancy and composition within GSAS The short answer here is read the code that does this, which I have not done anytime recently. What I recall is the unit cell composition is simply the s

Re: fractional occupancy and composition within GSAS

2009-12-02 Thread Brian Toby
The short answer here is read the code that does this, which I have not done anytime recently. What I recall is the unit cell composition is simply the sum of site multiplicities times the fractional occupancy for each site grouped by atom type. The way I come up with z is something of a klu