Linear rugosity concept of crystalline surfaces by using the Unidirectional Laser Oblique Illumination (ULOI) technique

The study of the I(p) curves obtained with Unidirectional Laser Oblique Ill umination describes the roughness of a crystal as a combination of straight edges in different directions, which generate the concept of linear rugosi ty. In the present work, a model of the crystalline surface based on this c oncept is introduced. Diffraction gratings as well as metallic surfaces sub jected to different metallographic procedures are analyzed. The theoretical results are compared with experimental values obtained in samples of Fe an d Zn using an objective of 16X. Both values, theoretical and experimental, are in total concordance. (C) 2001 Wiley-Liss. Inc.