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arXiv · 2404.08773

Laser-stimulated photodetachment of electrons from the negatively charged dielectric substrates

Y. Ussenov·M. N. Shneider·S. Yatom·Y. Raitses
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Abstract

It is shown experimentally that the photodetachment yield of surplus electrons created by plasma-induced charging of non-conductive surfaces of dielectric materials depends on the initial surface charge density and do not correlate with the tabulated affinity values of these materials. This unexpected result obtained using laser-stimulated photodetachment for fused silica, boron nitride, and alumina, is critically important for the understanding of charging and discharging dynamics, secondary electron emission, and photoemission effects affecting plasma-wall interactions relevant to surface and capacitively coupled discharges, dusty plasmas, electrostatic probe diagnostics and applications for plasma processing of materials, plasma propulsion and gas breakdown.

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Y. Ussenov, M. N. Shneider, S. Yatom, Y. Raitses. 2024-04-12. Laser-stimulated photodetachment of electrons from the negatively charged dielectric substrates. https://doi.org/10.1063/5.0237392

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