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Which of the following crystals are polished to act as the cut-off reflector?

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in Analytical Instrumentation by (131k points)
Which of the following crystals are polished to act as the cut-off reflector?

(a) Quartz

(b) Beryllium

(c) Silicon

(d) Lithium

This 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

1 Answer

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Best 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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