Hi guys I wanted to know if somebody can guide me on how to run a symmetrical grazing angle XRD on carbon thin films. I have been doing asymmetric grazing angle which predominantely measures diffraction pattern which is out of plane (normal) to the substrate. Now, I want to do an in-plane symmetric mode which could measure diffraction coming from planes parallel to the substrate, could somebody guide me on this ?? I have a vague idea that the inplane symmetric mode would be similar to a locked couple mode but I could be miles off !! the system is a bruker d8 discover thanks in advance !!