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Simulation of Short Pulse Photoemission in a Micro-diode with Implications for Optimal Beam Brightness by Árnason, Hákon Örn; Torfason, Kristinn; Manolescu, Andrei; Valfells, Ágúst is a scholarly article available to read on EtoBox.

What is Simulation of Short Pulse Photoemission in a Micro-diode with Implications for Optimal Beam Brightness about?

Molecular dynamics simulations, with full Coulomb interaction are used to model short-pulse photoemission from a finite area in a microdiode. We demonstrate three emission regimes, source-limited emission, space-charge limited emission for short-pulses, and space-charge limited emission for the steady state. We show that beam brightness is at a maximum during transition from the source-limited emission regime to the space-charge limited emission regime for short pulses. From our simulations it is apparent that the important factor is the emitter spot size when estimating the critical charge density for short-pulse electron emission.

Author

Árnason, Hákon Örn; Torfason, Kristinn; Manolescu, Andrei; Valfells, Ágúst

Published

2023

Language

EN