Auger data

Table III. X-Ray Photoelectron and Auger Data for Chalcocite and Covellite3 ...

All the chemical shift, shake-up and multiplet splitting information of XPS is, in principle, available in AES (9,10). The interpretation is more complex, however, because of the three levels involved in the process. In practice, Auger chemical shifts, etc., have not been nearly so widely exploited as they have in XPS. The empirical database is to date much more limited and again the habit of recording in the first derivative mode, often with poor resolution (to increase sensitivity for fast semi-quantitative elemental analyses) has obscured the usefulness of the chemical information. The exceptions to these remarks are usually from XPS practitioners who take their x-ray induced Auger data in the same manner as the XPS data and treat the analysis on an equal footing (9). 

Figure 5 Auger data from points 1, 2 and 3 in Figure 4, with fraction of various cations inset...

AES setup using a cylindrical mirror analyzer (CMA). An electron beam is focused onto a specimen, and emitted electrons are deflected around the electron gun and pass through an aperture toward the back of the CMA. These electrons are then directed into an electron multiplier for analysis. Varying voltage at the sweep supply allows derivative-mode plotting of the Auger data [85]. 

Recently S. D. Parker has studied Li adsorption on Ag(lll) using AES, LEED and work function measurements. The Auger data indicated that initial deposition led to the formation of a monolayer of Li. During the growth of this monolayer some diffusion of Li into the substrate occurred and this became more and more pronounced towards the completion of the layer. The AES... 

Quantification of Auger data can present problems on rough surfaces, for example, after ion etching. To minimise roughness... 

The analysis of the experimental data clearly indicates the sulfation of ceria-zirconia model catalysts is heavily dependent on total pressure and insensitive to temperature. Analysis of the high-pressure (1000 Torr) correlation with respect to composition indicates the cerium-rich systems preferentially sulfate, while the zirconium-rich systems selectively sulfate at low pressures (1 Torr). It should also be noted that the increase in overall pressure also represents an increeise of sulfur dioxide partial pressure from 5x10 to 5x10 Torr. These observations were confirmed with three independent numerical analyses of the collected Auger data. 

The Cu L VV and LttMiaV Auger data (9,33,41-43) reflect the v and cv DOS, respectively, and therefore provide further information on the Hubbard parameters. The Lt and Lt features and associated satellites are identified in Fig. 3. Table 1 indicates that the energies of these features are predicted accurately by the U and c parameters established above. We need only discuss the relative intensities. 

Figure 3. Comparison of Auger data for the materials indicated. LiaW data for CuO and 123 from ref. 49. Ls MmV data for CuO from ref. 42 and for 123 from Ref. 2. The L W data is on a 2-hole binding energy scale = Eu-Bktt and the Ls MmV on a 1-hole scale = Em-Eii-Eh>i where Eu - 933.4 and Eat = 77.3 eV (15,16). (Reproduced from Ref. 2, Not subject to copyright.)...

See also Band structure. Crystal struaure, Struaure Attraction, effect of screening, 112 Attraaive interaaion, required for superconductivity, 131 Auger data, Cu L jW and L jM V, 94,9 ... 

Fig. 8 Experimental surface atomic fraction of Pd, Xpj, derived from Auger data, as a function of the bulk atomic fraction, Xpj, for Ag Pd alloys dissolved anodically in 12 M LiCi solutions at 10 A cm (10 mC cm ). The simultaneous dissolution mode is only achieved forXpj > ca. 0.1. (Reprinted from Ref [38], Copyright 1986, with permission from Elsevier Science.)...

Auger Data-driven process, flexible, handles wide range of adhesives, improvement over time/pressure Sensitive to viscosity changes some effect of speed on consistency... 

Several subsequent studies have confirmed Meyerhof s analysis. In particular, precision measurements using the method of Auger spectroscopy have shown that Eq. (32) is able to predict X-vacancy sharing probabilities with accuracies of typically 10%. This is seen in Figure 12, where Auger data from different laboratories " are summarized. The experimental results are in excellent agreement with the Meyerhof-Demkov formula (32). Only the relatively light system B + C shows remarkable discrepancies from the theoretical curve. 

The morphological transition described here is remarkable in itself, and an ejq)lanation of its origin is not obvious. It clearly involves phenomena at potymer interfaces, since it requires for its appearance the presence of specific polymers adjacent to the film that is actually transformed, yet the Auger data demonstrate that the interpenetration is not great (at least for the top layer). It is clearty not a chemical cross-linking process, since the film is fully soluble in acetone. 

I thank John Turner and Paul Soo for obtaining the Auger data and help in interpretation, and Hua-Yu Liu for samples of SAL-601. 

Packing density of TYR was calculated from Auger data (Table 1) by means of Equations 1-4 and 6 ... 

Auger data for PHE adsorbed from 1 mM solution are given in Table 1. Packing density, Table 2, was obtained with the use of Equations 4 and 7-10 ... 

Packing density of DA, Table 2, was obtained from Auger data by means of Equations 2, 3 and 14-16 ... 

Auger data, Tables 1 and 2, and Equations 2 and 17-19 indicate absorption with the ring parallel to the Pt surface. Molecular packing density from... 

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