Ion scattering spectra

Fig. 9 ISS He ion scattering spectra obtained for Ir on Cu(lOO) at 200K substrate temperature. Eq = 1 keV. Amount of Ir in the first layer as a function of the nominal Ir coverage (one monolayer (ML) refers to the layer density of the substrate). Squares As deduced from measured IS spectra taken after Ir deposition. Dotted line Expected dependency for 2D (layer-by-layer) growth, (from ref [93]).

Fig. 1. Ion scattering spectra (ISS) as a function of 2-propyl iodide exposure on O/Ni(100) surfaces prepared by adsorption of 3.0 L of O2 at 300 K. The inset shows the ISS peak areas normalized to the signal of the Ni and O peaks for the surface with 0.0 L 2-C3H7I. These data highlight the fact that the alkyl iodides prefer to adsorb on the metal sites.

Platinum-Based Cathode Catalysts for Polymer Electrolyte Fuel Cells, Fig. 4 (a) Auger electron spectroscopy of as-sputtered and annealed PtaNi. (b) Low-energy ion-scattering spectra of the same two surfaces,... 

Figure 14A Low-energy ion scattering spectra for increasing amounts of Fe deposited on Si(lll) at room temperature. Beam energy (Eq) is 550 eV. Inset relative areas of Fe (black circles) and Si (open circles) ion scattering peaks. From Ref. [11].

Fig. 3.47. Schematic back-scattering spectra for MeV He ions incident on a 100-nm Ni film on Si (top) and after reaction to form Ni2Si (bottom). Depth scales are indicated below the energy axes [3.120].

Surface concentrations deduced from low-energy ion scattering (LEIS) spectra analysis showed that as erosion increases with time, the concentration of palladium increases whereas that of tin decreases. This result is in agreement with a pronounced surface enrichment by tin with respect to palladium according to the principle of the preparation method. 

For example, [94] reports a direct process for investigating ZnO polarity based on the analysis of time-of-flight spectra in ion-scattering experiments low-energy ion beams are scattered over the surface of the layer, causing it to be sputtered by the ion bombardment. The detector allows the time-resolved detection of the Zn-particle stream and of the scattered primary ions. The extent of O termination and Zn termination for the layer can be calculated from the difference between these signals. 

Ion Scattering Spectroscopy (ISS) fig. 4 (12) shows the spectra of fresh and used a- b2C>4-Ma03 (50 50) catalysts two sets of measurements are made (two... 

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