A bunch of other things would lower the intensity, assuming the Xray is a perfect parallel beam, such as
absorption
Lorentz factor
polarization
The amount of material irradiated
thermal vibration of the dots
Talking about the thermal vibration thing. Various software call it different names, such as U, beq, TDS, etc. note the conversion and unit. What is interesting is that a guy wrote a good thesis on this in Ruperto-Carola University of Heidelberg.
Jacopo Negroni, 2012. Validation of Crystallographic B Factors and Analysis of Ribosomal Crystal Structures.
Permission to use this graph is NOT granted. will take it off in a short while.
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