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29 March 2024
 
  » arxiv » cond-mat/0109430

 Article overview


Auger-electron cascades in diamond and amorphous carbon
Beata Ziaja ; David van der Spoel ; Abraham Szoeke ; Janos Hajdu ;
Date 24 Sep 2001
Journal Phys.Rev. B64 (2001) 214104
Subject cond-mat hep-ph
AbstractWe have analyzed the cascade of secondary electrons in diamond and amorphous carbon generated by the thermalisation of a single Auger electron. The elastic electron mean free path was calculated as a function of impact energy in the muffin-tin potential approximation. The inelastic scattering cross section and the energy loss of the electron (expressed in terms of differential inverse mean free path) were estimated from two "optical" models, that utilise the measured dielectric constants of the materials. Using these data, a Monte-Carlo model describing the time evolution of the cascade was constructed. The results show that at most around 20-40 secondary cascade electrons are released by a single Auger electron in a macroscopic sample of diamond or amorphous carbon. Consideration of the real band structure of diamond reduces this number further. The release of the cascade electrons happens within the first 100 femtoseconds after the emission of the primary Auger electron. The results have implications to planned experiments with femtosecond X-ray sources.
Source arXiv, cond-mat/0109430
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