Hmmm..... Sacha just threw another wrench into that discourse. Seems we are also faced with a duality problem here:
Coming from a mathematical point of view treating F as a complex number, structure factor magnitude or structure factor modulus is more logical and more direct. If you are taking the physical pov (let's not go into detail there, btw) *interpreting* the complex number as wave description (and here I must say Ian's point wrt song title/name is well taken) structure factor amplitude is more logical. Best, BR Dear Bernhard, First of all, happy new year ! > I am getting conflicting comments on the use of > 'structure factor amplitude' > vs. just > 'structure amplitude' for |F|. Even when "structure factor amplitude" (or "magnitude", following some english-speaking persons?? If I am right I learned that M.Woolfson prefers "magnitude". My English is too poor to judge) seems to be long, it seems to be correct and have a clear meaning. That is not the case for "structure amplitude". In that sens I agree with Ethan and Pavel. With best wishes ! Sacha
