Quantification of Carbon in a Binary System by the Fundamental Parameter Method

This paper discusses the results obtained from experiments using specially prepared carbon grids on top of metallic substrates and subsequent treatment of the data by means of a theoretical approach which is based on the conventional fundamental parameter theory but also includes secondary excitation effects by photoelectrons. Carbon gridlines with known parameters have been deposited on top of medium 2 disks in order to achieve well defined both absorption and excitation geometries. The grids having various thicknesses exhibit satisfactory performance in terms of mechanical stability, homogeneity and uniformity of the coating. However, due to the manufacturing process only a modulation in thickness could be obtained for thicknesses greater than 0.5 pm rather than a line/spacing pattern of any kind.