Effets de charge d'espace dans une décharge en haute fréquence. II

Chenot, M.

doi:10.1051/jphysrad:01955001602010100

Cited by 5 publications

(1 citation statement)

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“…The RF gas breakdown curves and detailed experimental techniques to measure them were studied by Gutton and Kirchner [69,70]. The dependence of the driving frequency and discharge initiation voltage on gap widths and gas pressures were analyzed in references [71][72][73], and the two-minima in the breakdown curve in RF discharge studies were discovered [74,75]. The theoretical research commenced with the Hale's modeling research [76] and Kihara's analytical treatment [77], which highlighted the importance of balance between the ionization rate and the electron diffusion or drift loss to the walls.…”

Section: Similarity Law In Rf Gas Breakdownmentioning

confidence: 99%

Review of the gas breakdown physics and nanomaterial-based ionization gas sensors and their applications

Kim

Kaganovich

Lee

2022

Plasma Sources Sci. Technol.

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Ionization gas sensors are a ubiquitous tool that can monitor desired gases or detect abnormalities in real time to protect the environment of living organisms or to maintain clean and/or safe environment in industries. The sensors’ working principle is based on the fingerprinting of the breakdown voltage of one or more target gases using nanostructured materials. Fundamentally, nanomaterial-based ionization-gas sensors operate within a large framework of gas breakdown physics; signifying that an overall understanding of the gas breakdown mechanism is a crucial factor in the technological development of ionization gas sensors. Moreover, many studies have revealed that physical properties of nanomaterials play decisive roles in the gas breakdown physics and the performance of plasma-based gas sensors. Based on this insight, this review provides a comprehensive description of the foundation of both the gas breakdown physics and the nanomaterial-based ionization-gas-sensor technology, as well as introduces research trends on nanomaterial-based ionization gas sensors. The gas breakdown is reviewed, including the classical Townsend discharge theory and modified Paschen curves; and nanomaterial-based-electrodes proposed to improve the performance of ionization gas sensors are introduced. The secondary electron emission at the electrode surface is the key plasma–surface process that affects the performance of ionization gas sensors. Finally, we present our perspectives on possible future directions.

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