I have recently compiled a model that gives excellent visual fits in R, q, and k space for bond spacing in a BCC structure.  This model gives bond spacings that make sense, and are very close to what would be expected from this set.  The R factors are very low, and the enot values correspond quite well to the edge.  However, our amplitude values are much larger than typically expected.  They come in at the range of 1.8 up to 5.0, but only on a few data sets.  On all the rest the amplitude values are 0.4 to 1.0.  Could this increase in amplitude be attributed to the fact that we ran florescence measurements instead of transmission, and have a weaker signal coming to the detector?  What else could be causing this in only one data set? All samples used in this model have the same structure.  Thanks in advance to any replies, your help and time is appreciated.

Gavin
gavin_garside@yahoo.com