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19 July, 21:08

An x-ray beam with wavelength 0.240 nm is directed at a crystal. as the angle of incidence increases, you observe the first strong interference maximum at an angle 24.5 ∘. what is the spacing d between the planes of the crystal?

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  1. 19 July, 21:15
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    This phenomenon is called the Bragg scattering. The working equation used for this is:

    λ = 2dsinθ

    where

    λ is the wavelength and θ is the incident angle

    0.240nm = 2dsin (24.5°)

    Solving for d,

    d = 0.29 nm
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