X-ray Diffraction: Smallest Angle of Scattering

[hhhmortal]

Homework Statement

A powdered sample of a simle cubic crystal with a lattice constat of 2.83 x 10^-10 m scatters X-rays of wavelength 1.54 x 10^-10 m. What is the smallest angle of scattering that will be observed from this sample?

Homework Equations

2dsinθ = nλ

The Attempt at a Solution

I simply used the equation above to calculate θ, but I wasn't sure what they mean by smallest angle of scattering what's this?


Thanks.

 

[hhhmortal]

Is it 15.8 degrees?

 

[nasu]

The smallest angle corresponds to the largest value of d.
For cubic crystal this is d100=a.