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Quasi first-principles Monte Carlo modeling of energy dissipation by low-energy electron beams in multi-walled carbon nanotube materials

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5 Author(s)
Emfietzoglou, Dimitris ; Medical Physics Lab, University of Ioannina Medical School, 451 10 Ioannina, Greece ; Kyriakou, Ioanna ; Garcia-Molina, Rafael ; Abril, Isabel
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The energy dissipation pattern of low-energy electron beams (0.3–30 keV) in multi-walled carbon nanotube (MWCNT) materials is studied by Monte Carlo simulation taking into account secondary-electron cascade generation. A quasi first-principles discrete-energy-loss model deduced from a dielectric response function description of electronic excitations in MWCNTs is employed whereby both single-particle and plasmon excitations are included in a unified and self-consistent manner. Our simulations provide practical analytical functions for computing depth-dose curves and charged-carrier generation volumes in MWCNT materials under low-energy electron beam irradiation.

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Applied Physics Letters  (Volume:100 ,  Issue: 9 )