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arXiv · 2206.06966

Molecular Dynamics Simulations of Mutual Space-Charge Effect between Planar Field Emitters

Hakon Valur Haraldsson·Kristinn Torfason·Andrei Manolescu·Agust Valfells
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Abstract

Molecular dynamics simulations, with full Coulomb interaction and self-consistent field emission, are used to examine mutual space-charge interactions between beams originating from several emitter areas, in a planar infinite diode. The simulations allow observation of the trajectory of each individual electron through the diode gap. Results show that when the center-to-center spacing between emitters is greater than half of the gap spacing the emitters are essentially independent. For smaller spacing the mutual space-charge effect increases rapidly and should not be discounted. A simple qualitative explanation for this effect is given.

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Hakon Valur Haraldsson, Kristinn Torfason, Andrei Manolescu, Agust Valfells. 2022-06-14. Molecular Dynamics Simulations of Mutual Space-Charge Effect between Planar Field Emitters. https://doi.org/10.1109/tps.2020.2991582

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