Oxygenates satellite observations

Shake-up satellite structure in the X-ray photoelectron spectra of [Mo(CNR)7](PF6) (R = Me, Bu, C6H,) has been observed. The similarity of the nitrogen band carbon s Is/lp ratios to those of Mo(CO)6 oxygen b and carbon b Is/lp ratios argues for a similarity in bonding, as a decrease in the metal-carbon bond length (i.e., stronger M-C bonding) will influence both the satellite position relative to the primary peak and the Is/lp intensity ratio (266). 

On the other hand, the photoelectron spectra of metals are extraordinarily sensitive to the presence of oxygen and other chemical species at the surface. Oxygen core level lines and oxide satellites associated with the metal core lines are readily seen in fact, with the vacua attained in many spectrometers they are hard to avoid Preferential oxidations has been observed in measurements of... 

Observations have identified the same condensed oxygen signature as seen for the other icy satellites (Spencer and Calvin, 2002). In addition, a tenuous molecular oxygen atmosphere has been identified from Hubble Space Telescope spectra... 

While the narrow and intense bands were again ascribed to pure vibrational transitions, the satellites were now interpreted as modes of translational motions of the center-of-mass (of H2,D2 on Na-A or Na,Ca-A) as already mentioned (vide supra). In the case of O2 adsorbed on Na-A, a doublet of bands was observed (cf. Fig. 31 and [587,597]). As an explanation it was suggested that the oxygen mol-... 

Figure 3 Simulation of an observation by SAX-NFI of a Seyfert 1 galaxy (MCG-6-30-16) with several of the features observed in the last 10 years by Afferent satellites a soft excess below 1 keV (EXOSAT), an edge of ionized oxygen at 0.8 keV (ROSAT, ASCA), a broad iron Hne (FWHM = 0.7 keV) at 6.4 keV and a high energy bump between 10 and 200 keV (GINGA). The spectrum is fitted with a simple power law and the residuals clearly show all those components. In the blow-up in the bottom of the figure the residuals of the MEGS around the broad iron line are plotted, showing that the line is well resolved by the detector.

In addition to these results Platau and Karlsson (1980) observed a decaying phase of Ce02 even at room temperature immediately after exposure to oxygen. Identification of different chemical species was accomplished by using the rather specific satellite structure of the Ce 3d doublet in XPS. 

I5), and oxygen (or fluorine) Ka 2p -> 1 )) are split into several components (consistent with the selection rules) relative to the atomic lines. Thus in tetrahedral M04 ions (M = A1 to Cl), and octahedral MOe" ions (M = Mg, Al) and MFeP" ions (M = Al, Si, P) a relatively intense (10-20%) low energy satellite (K/ 0 to K)9 is observed, and is consistent with significant M(3p)-0(2r) bonding, which has sometimes been considered negligible. Also, in MgO... 

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