Auger electrons yield

Fig. 6.13. Auger electron yield carbon K-edge NEXAFS spectra of rubbed poly-imide (top), ion beam irradiated polyimide (middle), and ion beam irradiated amorphous carbon (bottom) for the indicated geometries. The intensity ratios of the plotted TT resonances characterize the in-plane asymmetry (left column) and the molecular tilt direction (right column).

The bombardment of gaseous PH3 by H+ ions (0.4 to 2.0 MeV) and HJ ions (0.4 to 1.2 MeV) was used to measure the L-shell Auger electron spectrum of phosphorus and to calculate the ionization cross section of the L-shell from the Auger electron yields [32]. 

Experimental data relating ionizing electron energy to changes in the population of internal energy states of NO have been reported from other laboratories. Vance/ in a study of Auger-electron yields, obtained evidence for electronic excited states of NO only at an electron energy of 16.2 eV. The ion-beam-attenuation experiments of Mathis et also... 

Other investigators who have probed the internal energy states in beams by different techniques have also concluded that only one excited electronic state is involved under conditions of comparable ion lifetime. Thus Vance observed a sharp increase in Auger-electron yields in the neighborhood of 16.3 eV, but detected no other structure attributable to excited states. Similarly, Mathis and co-workers obtained evidence for only one excited state in the attenuation of an NO" beam, although they identified this state as a... 

After the absorption of the X-ray photon and emission of the photoelectron, the absorbing atom is in an excited state, as it has a hole in one of its deep core levels. The atom will relax by the emission of a fluorescent X-ray photon or an Auger electron. The fluorescence (fluorescence yield) or Auger (electron yield) intensities are proportional to the absorption in the sample, and the detection of these signals gives an indirect way to measure the absorption. 

X-ray absorption spectra (XAS) have been already measured under AP conditions with the Auger electron yield method. If circularly polarized lights are used for XAS measurements, surface magnetic information will be obtained via XMCD under realistic conditions. At the moment, the photon energy is scanned with a... 

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