Re: RE: Re: Cell parameter constrain

2006-11-15 Thread Leopoldo Suescun
e. Argonne IL 60439 Phone: 1 (630) 252-9760 Fax: 1 (630) 252- - Original Message - From: "Von Dreele, Robert B." <[EMAIL PROTECTED]> Date: Wednesday, November 15, 2006 7:42 am Subject: RE: Re: Cell parameter constrain > Hi All, > A couple of points about la

RE: Re: Cell parameter constrain

2006-11-15 Thread Von Dreele, Robert B.
Hi All, A couple of points about lattice parameter constraints: 1) Beware of using "damping"; it isn't needed especially for lattice parameters in Rietveld refinements and it will mess up the intent of constraints if not very carefully used. 2) The constraints are on the reciprocal metric tensor