Reflection high-energy electron diffraction (RHEED)
Reflection high-energy electron diffraction (RHEED)
Reflection high-energy electron diffraction (RHEED)
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tanθ = S L ≈ sin θsince θ is smalld ≈ ⎜⎛ h 2 + l⎝2 ⎞⎟ ⋅λ⋅ S ⎠ LIf information about periodicity in plane of incidence is required, θ i must beincreased so that the Ewald sphere cuts several reciprocal lattice rods- streaks then become rows of (blurred) spotsIntensity versus θ i - I(θ I ) "rocking curves" - can be used with dynamical theoryto extract detailed atomic spacingCEM 924 7.4 Spring 2001
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