Anujit! Please post your XRD data and some references for your sample material along with details of the XRD experimental setup used. This will allow for a better and more cogent feedback from the highly "expert" RG membership.
You may also increase the number of topics up top to 15 instead of just the 3 you've selected. This will increase the exposure and hence participation rate as well.
If you are implying by "gallery height", some sort of a Nano structural periodicity of electron density along a chosen (hkl), then I suggest a thorough examination of Andre' Guinier's book on XRD. There are many more modern resources as well.
Gratuitous "Negi Nellies" ought to expose themselves and articulate :-)
Voting down without comment is cowardly. You won't get wacked on the head. You are not in DAESHLAND. Go ahead, spit it out. Let us know the rationale for your wanton "contrarianism" even before I put up all this stuff:-)