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Electron energy spectra characterizing the relaxation of molecular oxygen from different core hole excited states are reported. By using monochromatic synchrotron radiation, spectra are obtained with excitation at the π* and σ* resonances and at various energies above the ionization threshold. The spectra obtained with excitation above threshold are very similar and result from Auger decay. The spectra obtained at the σ* resonance result from spectator autoionization, and those for the π* resonance result from both spectator and participator autoionization. The σ* resonance is broadened by spectral congestion, and the autoionization spectra indicate the presence of three components. Configurations and states produced by the electronic decay are identified, and a correlation between spectator screening and term values is documented. [ABSTRACT FROM AUTHOR]

Presents a study which utilized soft x-ray photoemission to investigate the chemisorption and subsequent reaction of diethylsilane on silicon (111) and (100) surfaces. Degradation of diethylsilane; Results of the valence band photoemission measurements; Details of the silicon 2p and carbon 1s core level spectra.

Focuses on a study which examined the chemical mechanisms involved in the decomposition of boron trichloride and the concomitant incorporation of elemental boron into silicon. Information on chemical-vapor deposition; Methodology of the study; Results and discussion.

The symmetry of excited states reached by photoexcitation of K-shell electrons of N2 and O2 is identified from the fragmentation anisotropy. For each molecule, ion yield excitation spectra were obtained at 90°, 54.7°, and 0° relative to the axis of soft x-ray polarization. The degree of polarization of the synchrotron radiation was determined experimentally. From this determination and the angular dependence of the ion yield, the photoabsorption anisotropy parameter β is obtained as a function of photon energy. Variations in the β spectra are discussed in terms of previously assigned spectral features and are compared with other experimental results. A comparison also is made with theoretical calculations, which are available for the case of N2. [ABSTRACT FROM AUTHOR]

Presents a study which investigated the interaction between B[sub2]H[sub6] and silicon dioxide by soft x-ray photoemission. Experimental procedure; Results and discussion; Conclusions.

An experimental method is described that is directed at monitoring the creation and decay of core hole states in molecules from state-to-state. Data in the form of a coincidence map are presented and analyzed for the case of nitrous oxide. [ABSTRACT FROM AUTHOR]