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Abstract
Abstract Contributions of electrons with different energies to Auger electron appearance potential spectroscopy (AEAPS) have been investigated. Appearance potential spectra amplitude dependences have been measured for Ti, Cr, Mn and Ni by means of a previously exploited method using a spherical three-grid retarding field system. The effective dimensionless coefficient σ eff , representing the number of slow electrons emitted at the disappearance of one elastically reflected electron at a threshold potential, ranges from 2.7 to 3.5 for L 2,3 subshells and from 9 to 11 for L 1 subshells. These results have been accounted for in terms of fast, highly probable Coster–Kronig transitions which turned out to be the only possibility for relaxation of the L 1 subshells of the materials under investigation. This explanation has been supported by a direct comparison with both former and recent experimental results. © 1997 Elsevier Science B.V.
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