Radiation-induced electron cascade in diamond and amorphous carbon

Beata Ziaja; David van der Spoel; Abraham Szoke; Janos Hajdu

doi:10.1117/12.452965

28 December 2001 Radiation-induced electron cascade in diamond and amorphous carbon

Beata Ziaja, David van der Spoel, Abraham Szoke, Janos Hajdu

Proceedings Volume 4500, Optics for Fourth-Generation X-Ray Sources; (2001) https://doi.org/10.1117/12.452965
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

We have analyzed the evolution and the interaction dynamics of secondary cascade electrons generated by a single Auger electron in diamond and in amorphous carbon. The elastic mean free path was calculated as a function of impact energy, using the muffin-tin potential approximation, while the differential mean free path and the inelastic mean free path were estimated from two different optical models as a function of the impact energy. A Monte-Carlo model for describing the time evolution of the cascade was constructed, and numerical simulations were performed. The results show that the maximal average ionization rate caused by a single Auger electron corresponds to about $20$ to $40$ ionization events in a macroscopic sample. These electrons are liberated within 100 fs, following the Auger emission.

Citation Download Citation

Beata Ziaja, David van der Spoel, Abraham Szoke, and Janos Hajdu "Radiation-induced electron cascade in diamond and amorphous carbon", Proc. SPIE 4500, Optics for Fourth-Generation X-Ray Sources, (28 December 2001); https://doi.org/10.1117/12.452965

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