p37_057 - 57. There are two unknowns, the x-ray wavelength...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
57. There are two unknowns, the x-ray wavelength λ and the plane separation d , so data for scattering at two angles from the same planes should suffice. The observations obey Bragg’s law, so 2 d sin θ 1 = m 1 λ and 2 d sin θ 2 = m 2 λ. However, these cannot be solved for the unknowns. For example, we can use the ±rst equation to
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online