Question

Copper metal's diffraction pattern was measured using X-ray radiation (λ = 1.315 Å). First order Bragg diffraction peak is found at the angle 2Θ= 50.5 °. Calculate spacing between diffracting planes in the metal.

Answer 1

From Bragg's Law we know that,

Where

λ = wavelength of the x-ray

θ = scattering angle

n = integer representing the order of the diffraction peak.

d = inter-plane distance of (i.e atoms, ions, molecules)

Given:

Since the peak is foundfor first oder, so n=1.

Now, Putting the values in Bragg's Law, we get