Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Last revision Both sides next revision
damp [2010/11/02 01:00]
pac079 created
damp [2010/11/02 08:16]
pac079
Line 1: Line 1:
 ====== GSAS-style Dampening Factors ====== ====== GSAS-style Dampening Factors ======
-Dampening factor for any refined value (lattice parameters, atomic positions etc.), for those who think that they know better than the least squares algorithm+Dampening factor for any refined value (lattice parameters, atomic positions etc.), for those who like to think that they know better than the least squares algorithm.
 <code topas>​macro Damp(DampFactor) { update = Val + (Change*(1/​Exp(DampFactor/​2)));​ } <code topas>​macro Damp(DampFactor) { update = Val + (Change*(1/​Exp(DampFactor/​2)));​ }
 '​Rather than the true GSAS dampening [applied shift = (10-damp)/​10],​ an exponential function is used, scaled to useful dampening values of 0-9 '​Rather than the true GSAS dampening [applied shift = (10-damp)/​10],​ an exponential function is used, scaled to useful dampening values of 0-9

Personal Tools