title: Analysis of the intensity curves obtained by the unidirectional laser oblique illumination technique at different magnifications.
abstract: The study of the gaussian parameter omega-the approximate width of a peak at half height-of the intensity curves obtained by means of the Unidirectional Laser Oblique Illumination technique employed in the optical microscopy of materials permits introduction of the concept of variation of a surface pattern at different magnifications. This concept establishes how the surface pattern or topography varies among different areas when different magnifications are used. Diffraction gratings and metallic surfaces which have been subjected to different metallographic procedures are analyzed, using objectives of 8x, 16x, and 32x.
authors.affiliation: Comisión Nacional de Energía Atómica (CNEA), U.A. Materiales CAC and Instituto Sábato, Universidad Nacional Gral. San Martín-CNEA, Lincoln 831, Castelar (1712), Argentina.
authors.forename: Eduardo Alfredo
authors.initials: EA
authors.lastname: Favret
mesh_terms: D003460:Crystallization; D007089:Image Enhancement / Q000295:instrumentation; D007501:Iron / Q000032:analysis; D007834:Lasers; D008433:Mathematics; D008853:Microscopy / Q000295:instrumentation / Q000379:methods; D013499:Surface Properties; D015032:Zinc / Q000032:analysis
chemical_list: D007501:Iron; D015032:Zinc