ISSN:
0142-2421
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Physics
Notes:
We have studied the dependence of the Auger peak shape on primary electron energy for polycrystalline iron and have succeeded in extracting information about the excitation depth distribution. Iron LMM spectra were measured with different incident primary energies (1.25-4.00 keV) and the reflection electron energy-loss spectroscopy (REELS) spectrum was measured at an energy of 0.7 keV corresponding to the average Fe LMM Auger energy. In the inelastic background analysis, we approximated the depth distribution functionf(x) of emitting atoms as a rectangular or an exponential decay model. Using the inelastic scattering cross-section from REELS, the analysis separated the spectra into the intrinsic Auger spectra and the inelastic peak backgrounds corresponding to thef(x) at each incident energy. It was found that the exponential model was a more suitable model forf(x) than the rectangular model. The exponential decay length of excitation for Auger electrons was found to increase significantly as the primary energy increased.
Additional Material:
9 Ill.
Type of Medium:
Electronic Resource
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