>>each instrument should have his own optmized file Dear John I agree with Francesco. In particular the values of the parameters alp, bet_0 and bet_1 are related to the material and dimensions of the cryogenic moderators for the neutron source and should not be refined, while the sig_j and gam_j j=0,1,2 are related to your sample and must be refined. John, you should ask the local contact of the instrument the values of alp, bet, difC, difA and Zero parameters. However you can find some other parameter files for neutron powder diffraction (TOF) also in: http://www.isis.rl.ac.uk/crystallography/hrpd/ bye Stefano
Quoting [EMAIL PROTECTED]: > > Dear John, > > I think that each instrument should have his own optmized file, due to its > profile function, but if you want to see some parameter files for neutron > powder diffraction from a pulsed source you can find them at > > http://www.isis.rl.ac.uk/crystallography/polaris/ > > Francesco > > > ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.
