In total reflection X-ray fluorescence spectrometer, the specimen is excited by the primary X-ray beam at a grazing angle _______ the critical angle.
A. Greater than
B. Less than
C. Equal to
D. Which is a complement of
Answer:B
In total reflection X-ray fluorescence spectrometer, the specimen is excited by the primary X-ray beam at a grazing angle _______ the critical angle.
A. Greater than B. Less than C. Equal to D. Which is a complement of
Explanation: In total reflection X-ray fluorescence spectrometer, the specimen is excited by the primary X-ray beam at a grazing angle less than the critical angle. Total internal reflection occurs at the critical angle.