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Indirect determination of the incoherent scattering in disordered carbon materials
Author(s) -
Lachter J.,
Henry L. G.,
Bragg R. H.
Publication year - 1988
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889887009427
Subject(s) - scattering , incoherent scatter , diffraction , small angle scattering , materials science , optics , biological small angle scattering , intensity (physics) , bragg's law , range (aeronautics) , carbon fibers , molecular physics , absorption (acoustics) , chemistry , small angle neutron scattering , physics , neutron scattering , composite number , composite material
An indirect method of determining the intensity of the incoherent X‐ray scattering component of the total scattering intensity from a disordered carbon material is presented. It utilizes the incoherent scattering from a crystalline carbon sample (standard) measured at a diffraction angle 2 θ far from a Bragg interference maximum, and requires only knowledge of the linear absorption coefficient μ and density ρ of the material. The results obtained for angles 2 θ in the range 100–160° show that the direct and indirect determinations of the incoherent scattering are in excellent agreement. The indirect method takes a simple form when the disordered and crystalline carbon sample thicknesses, t , are optimized either for small‐angle scattering, μt = 1, or for wide‐range diffraction, exp [− μt /sin θ ] ≃ 0.