A modified and calibrated drift-diffusion-reaction model for time-domain analysis of charging phenomena in electron-beam irradiated insulators

A modified and calibrated drift-diffusion-reaction model for time-domain analysis of charging phenomena in electron-beam irradiated insulators

Raftari Tangabi, Behrouz (TU Delft Numerical Analysis)
Budko, N.V. (TU Delft Numerical Analysis)
Vuik, Cornelis (TU Delft Numerical Analysis)

2018

This paper presents a modified self-consistent drift-diffusion-reaction model suitable for the analysis of electron-beam irradiated insulators at both short and long time scales. A novel boundary condition is employed that takes into account the reverse electron current and a fully dynamic trap-assisted generation-recombination mechanism is implemented. Sensitivity of the model with respect to material parameters is investigated and a calibration procedure is developed that reproduces experimental yield-energy curves for uncharged insulators. Long-time charging and yield variations are analyzed for stationary defocused and focused beams as well as moving beams dynamically scanning composite insulators.

Electron beams
Signal processing
Stellar structure and properties
Electric currents
Surface collisions

http://resolver.tudelft.nl/uuid:6a47cdda-40fc-4b4f-af24-2b086c87989a

https://doi.org/10.1063/1.4994879

2158-3226

AIP Advances, 8 (1), 1-24

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journal article

© 2018 Behrouz Raftari Tangabi, N.V. Budko, Cornelis Vuik