Question

Which one of the following is the big disadvantage of the Debye-Scherrer cameras?

(a) High intensity diffracted beams

(b) High intensity refracted beams

(c) Low intensity refracted beams

(d) Divergent diffracted beams

This question was posed to me in a national level competition.

This question is from Modern X-Ray Powder Techniques and their Applications in portion X-Ray Diffraction of Solid State Chemistry

Answer 1

Correct choice is (d) Divergent diffracted beams

Easy explanation: The big disadvantage of early Debye-Scherrer cameras is that incident and diffracted beams are inevitable, somewhat divergent and of low intensity. In diffractometer and the modern focusing cameras, a convergent X-ray beam is used.