Hi everyone
I am developing a laboratory energy dispersive X-ray diffractometer. The X-ray source was selected from industrial radiography range consisting of a high voltage X-ray generator (up to 225kV/4.5kW) equipped with a long-life metal-ceramic W target tube head. The detector is Peltier-cooled high-energy solid state detector. We normally use energy up to 100KeV and fix the two theta angle to 10 degrees. We usually use the beamsize of 0.5x0.5mm or 1x1mm. We use it for strain measurement on the materials, such as Al, Mg, Ti, etc. I am trying to optimize the setup. The current setup is that the source to sample distance can be adjusted and the sample to detector distance can be adjusted as well. Could anyone give me some ideas of influences of the distances, e.g. what are the affects of changing the source to sample distance or sample to detector distance? What are the parameters to judge a good distance of source to sample or distance of sample to detector? What is the good compromise of the parameters to give a better peak resolution? Many thanks!! Kind regards, Shu Yan
