Fullprof and Argonne TOF data

1999-02-24 Thread Mitchell, Brian J.
I'm wondering if anybody has experience using Fullprof to refine Argonne TOF powder diffraction data which has not been treated to account for the shape of the incident spectrum i.e. not had incident spectrum stripped from raw data. Regards, Brian Mitchell Dr Brian J. Mitchell GRSC IPNS Argonne

Absorption GSAS and TOF Instruments

2000-02-03 Thread Mitchell, Brian J.
Dear All, I am currently trying to study a sample of Ba2In2O5 (pellet form diameter = 0.9 cm. Density = 6.00 g/cm3) on GPPD at IPNS. So I am dealing with a Time of Flight neutron powder diffraction data. I use GSAS as the refinement package. This is a highly absorbing sample and I understand the

Sample effect?

2000-02-24 Thread Mitchell, Brian J.
I am currently analysing data taken on GPPD at IPNS on a sample of SrFe0.8Co0.2O3-delta at 900 Celsius. After performing a Rietveld analysis (GSAS) I can get perfectly acceptable fits while the oxygen content is sensible for any given pO2. The Fe:Co ratio is also as would be expected. The proble