title: Bragg-surface dynamical diffraction
abstract: In this work, the dispersion surface of Bragg-surface diffraction (BSD) is presented. A symmetric Bragg reflection plus a secondary diffracted wave nearly parallel to in-plane directions distinguish the BSD from an ordinary three-beam diffraction. The solutions of the fundamental equations of the dynamical theory of X-ray diffraction for the BSD demonstrate that measurable specular-reflected secondary waves are simultaneously excited with the diffracted waves.
authors.affiliation: Instituto de Fisica, USP, CP 66318, 05315-970 Sao Paulo, SP, Brazil.
authors.initials: LH
authors.lastname: Avanci
authors.initials: SL
authors.lastname: Morelhao