1.

Which of the following crystals are polished to act as the cut-off reflector?(a) Quartz(b) Beryllium(c) Silicon(d) LithiumThis question was addressed to me during an interview.My doubt is from Total Reflection X-Ray Fluorescence Spectrometer in portion X-Ray Spectrometers of Analytical Instrumentation

Answer»

Correct choice is (c) Silicon

For explanation: Quartz CRYSTALS are polished to act as the cut-off reflector. It is mounted on the FIRST reflector STAGE.



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