X-ray Diffraction: Smallest Angle of Scattering

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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.
 
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Is it 15.8 degrees?
 
The smallest angle corresponds to the largest value of d.
For cubic crystal this is d100=a.
 
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