Hi Abhijeet: I wasnot able to view the BMP. Perhaps a PNG or JGP would be a better format. in any case, a figure is very hard to assess. My incilnation is to say that you hve something very wrong with your fitting if your SS is negative. This is not really very physical. If you could attache your artemis project file, it would allow others to anszer your questions more effectively. Carlo On Fri, 3 Jul 2009, abhijeet gaur wrote:

Hi all, I am fitting Cu2O data. But when I fit the first shell using the first path, I got the guess value for SS parameter negative which is around -0.0028 and also the guessed value for SO2 parameter comes out to be around 0.52. Are these values logically correct as I am getting a nice fit. Also when I use the same SS parameter but with positive sign for the first shell i.e., 0.0028, the guessed value for SO2 parameter comes out to be 0.61. When I fit the higher shells by using the same SO2 and Enot value for other paths, the value of SS parameter for these paths is coming very high , i.e., 0.016 - 0.021. But the fit seems to be quiet good. Are these higher values of SS parameter correct. The resulting figure is attached.

with thanks

Abhijeet Gaur

School of Studies in Physics

Vikram University, Ujjain, INDIA.

-- Carlo U. Segre -- Professor of Physics Associate Dean for Graduate Admissions, Graduate College Illinois Institute of Technology Voice: 312.567.3498 Fax: 312.567.3494 segre@iit.edu http://www.iit.edu/~segre segre@debian.org