Showing papers in "Journal of Electron Spectroscopy and Related Phenomena in 1996"

TL;DR: In this article, the properties of surface oxides on titanium surfaces were discussed by discussing some selected examples of surface spectroscopy analyses of Ti surfaces prepared by different methods, including clinical procedures (machining, solvent cleaning, sterilization), electrochemical methods (electropolishing and anodic oxidation), thermal oxidation in air, and nitrogen-ion implantation.

TL;DR: In this article, a consistent set of relative atomic charges for several light elements has been obtained employing the semi-empirical AM1 method and linear relationships between charges and experimentally determined core-electron ESCA shifts obtained from model compounds were established.

TL;DR: Stable silicon photodiodes with 100% internal quantum efficiency have been developed for the vacuum ultraviolet and soft x-ray regions as mentioned in this paper, and the response of these detectors can be reasonably well represented by a simple model for photon energies above 40 eV.

TL;DR: In this article, the effects of surface modification by electrochemical and plasma oxidation are discussed and the surface chemical changes described with examples from the author's work, showing that the interaction of the matrix with the fiber surface is a subtle mixture of physical and chemical effects.

TL;DR: In this article, high-resolution, synchrotron radiation excited valence photoelectron satellite spectra, taken at the magic angle, of all the rare gases, He, Ne, Ar, Kr and Xe are presented.

TL;DR: The total yield XANES spectra of 13 commonly used organic polymers have been obtained at the C K-edge using synchrotron radiation, for use as a reference source for studies on polymers as mentioned in this paper.

TL;DR: In this article, advances in characterizing the chemical and physical properties of organic plasma deposited films (PDFs) are discussed. But the authors focus on the relationship between plasma deposition parameters and PDF properties such as surface chemistry, crosslinking, mobility, roughness, and molecular orientation.

TL;DR: X-ray photoelectron spectroscopy, together with some bulk sensitive techniques, has been used to characterize a set of Venezuelan laterites which are potential catalysts in various industrially important reactions.

TL;DR: In this paper, the chemical shift of the B K-edge is correlated with the oxidation state of B, electronegativity of ligand and coordination geometry of B. The coordination of B in K 2 OSiO 2 B 2 O 3 glasses is also investigated.

TL;DR: A review of surface analysis of polymeric biomaterials can be found in this paper, where the correlation between surface characterization and bio- and blood-compatibility has been more clearly addressed.

TL;DR: In this article, the experimental energy loss function of a material is modeled as a sum of Mermin type functions in the optical limit (i.e., at zero momentum transfer), and its dependence on the momentum transfer is calculated.

TL;DR: The beamline at the Advanced Light Source (ALS) was designed for high resolution spectroscopy in the soft x-ray energy region, covering a range from 30 eV to 1500 eV with three gratings as mentioned in this paper.

TL;DR: In this paper, several areas of surface modification techniques are chosen to illustrate how they are being applied in the biomaterial field, stressing the interdisciplinary nature of the work as well as the surface analytical techniques involved.

TL;DR: Auger photoelectron coincidence spectroscopy (APECS) as discussed by the authors is a technique in which Auger electrons are counted only when the photo-electron that caused the ionisation is also detected.

TL;DR: In this article, the role of parity selection rule in the case of homonuclear diatomic molecules is discussed thoroughly and illustrated by the X-ray emission spectra of N2.

TL;DR: In this article, the gas phase He(I) photoelectron spectra of uracil and its derivatives, 5-fluorouracil (II), ftorafur (tegafur, 5fluoro-1-(tetrahydro-2-furyl)uracil) (III), 2′, 3′-dideoxyuridine (IV) and 2′-3′-dimoxy-5fluoroursidine (V), have been studied by means of MNDO calculations.

TL;DR: In this paper, the absolute photo absorption cross sections (σt) and photoionization quantum yields (η) of alkanes (C2H6 and C3H8) have been measured in the 50-120 nm region using synchrotron radiation as a light source and an ionization chamber combined with metallic thin film windows.

TL;DR: Luminineence quenching which originates from the interaction of closely spaced electronic excitations (EEs: electrons, core-and valence-band holes, excitons, etc.) is considered in this paper.

TL;DR: In this paper, the electron energy-loss spectroscopy (EELS) data is decomposed into the Cr-3d and O-2p contributions showing strong hybridizations over the whole valence band range and an occupation of about 3d4.15 of the Cr 3d state.

TL;DR: In this paper, the surface structures and electronic properties of submonolayer thiophene C4H4S adsorbed on Cu(100) (0.07 ML, 220 K) and Ni(100, 0.10 ML, 43 K) have been investigated by means of S K-edge surface extended X-ray-absorption fine structure (SEXAFS), near-edge Xray absorption fine structures (NEXAFS) and S 1s X-Ray photoemission spectroscopy (XPS) measurements.

TL;DR: In this article, the effects of heating on both the reflectivity and layered structures of Mo/Si and Mo/C/Si/C multilayers were evaluated and it was shown that Mo/S has better heat resistance than Mo/M multilayer.

TL;DR: In this article, the authors systematically analyzed 2p, 3p and 3s core-level x-ray photoemission spectra (XPS) for a series of transition metal sesquioxides M2O3(M=Ti, V, Cr, Mn, Fe) by means of an MO6 cluster model.

TL;DR: In this article, the X-ray photoelectron (XPS), emission (XES), and absorption (XAS) spectroscopy methods have been used to study the electronic structure of cubic TaCx and hexagonal Ta2Cy (y=2x) carbides, and also rhombohedral ζ-Ta4C3 and ϵ-Ta3C2 phases.

TL;DR: In this article, a coupled channel Schrodinger equation model was used to interpret the results of an experimental decomposition of the photoabsorption spectrum of O2, covering the wavelength range from 1150 A to 1750 A.

TL;DR: In this article, the photoion desorption by inner shell electron excitation from solid films of poly(methyl methacrylate), poly (methyl acrylate) and poly(methacrylic acid) was studied.

TL;DR: In this paper, the authors measured fragment ion yields in the 90° and 0° directions in the C 1s→Rydberg excitation region of CO2 and CH4 and showed that the vibronic coupling with the two-fold degenerate bending vibration causes the Jahn-Teller distortion to the C3v geometry and enhances mixing with t 2 ∗ valence state of antibonding character.

TL;DR: In this paper, the soft X-ray crystal monochromator stations with new mirrors at the Photon Factory were described, where the reflectivity and stability of the first mirror have been improved.

TL;DR: In this paper, the practical utility of surface spectroscopy in biomaterials is viewed from an abstract analytical science perspective in which the desired target information is compared to that obtained through spectroscopic probes.

TL;DR: An appreciable magnetic circular dichroism was found for the La 4d → 4f core absorption in a ferromagnetic La 0.84Sr0.16MnO3 as discussed by the authors.

TL;DR: In this paper, the photon energy dependence of valence band photoemission from polystyrene thin films has been investigated using synchrotron radiation in the range 150-450 eV, covering the carbon K edge.