Question

In single X-ray diffraction measurement, the crystal is mounted on __________

(a) X-ray source

(b) Goniometer

(c) Diffraction Plate

(d) Fluorescent plate

The question was asked in class test.

Question is taken from Crystal Structure in section X-Rays and Compton Effect of Engineering Physics II

Answer 1

Right option is (b) Goniometer

The best I can explain: It is only by the diffraction of light when passing through the crystal that the structure of a crystal is identified. The goniometer is a device that is used to position the crystal at selected orientations. In a single-crystal X-ray diffraction measurement, the crystal is mounted on it.