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Book Sections Year : 2023

Plasma Chemistry, Laboratory

Nathalie Carrasco
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Abstract

Plasma Chemistry refers to chemical processes occurring in partially ionized media. In planetary science, plasma setups, such as capacitively coupled plasma, corona discharge, or spark discharge, are often used as proxies to simulate the complex chemical networks triggered in upper planetary atmospheres by Far- and Extreme-UV stellar radiations (Szopa et al. 2006; Tigrine et al. 2016; He et al. 2019). Such chemical systems couple the reactivity of neutral species, positive and negative ions, and electrons, involving, for instance, neutral-neutral reactions, ion-neutral reactions, and dissociative recombination reactions. The densities (and temperatures) of the neutrals, the ions, and the electrons are highly variable according to the plasma source considered, leading to varying possible degrees of ionization (Cable et al. 2012).
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Dates and versions

insu-03494014 , version 1 (18-12-2021)

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Nathalie Carrasco. Plasma Chemistry, Laboratory. Muriel Gargaud, William M. Irvine, Ricardo Amils, Philippe Claeys, Henderson James Cleaves, Maryvonne Gerin, Daniel Rouan, Tilman Spohn, Stéphane Tirard, Michel Viso (eds). Encyclopedia of Astrobiology, Springer, Berlin, Heidelberg, pp.2386-2387, 2023, Print ISBN: 978-3-662-65092-9 / Online ISBN: 978-3-662-65093-6. ⟨10.1007/978-3-662-65093-6_5141⟩. ⟨insu-03494014⟩
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