As far as I know, for X-ray mirrors the LP angle is near zero. Leonid
******************************************************* Leonid A. Solovyov Institute of Chemistry and Chemical Technology 660049, K. Marx 42, Krasnoyarsk , Russia www.icct.ru/eng/content/persons/Sol_LA www.geocities.com/l_solovyov ******************************************************* --- On Sat, 7/25/09, chu...@hkusua.hku.hk <chu...@hkusua.hku.hk> wrote: > From: chu...@hkusua.hku.hk <chu...@hkusua.hku.hk> > Subject: Re: LP factor in the Rietveld refinement > To: "Ross H Colman" <ucca...@ucl.ac.uk> > Cc: rietveld_l@ill.fr > Date: Saturday, July 25, 2009, 4:16 AM > Dear Ross, > > How about the LP factor/monochromator angle if using Gobel > mirror inĀ > my D8 system? > > Thanks! > > stephen >