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Article Dans Une Revue Physics of Plasmas Année : 2024

Gas temperature measurements from ps-TALIF in highly collisional plasmas

Résumé

In this work, we present a straightforward approach to retrieve gas temperatures directly from the effective lifetime τH of the ps-laser excited species measured with picosecond Two Photon Absorption Laser Induced Fluorescence (ps-TALIF). This approach allows for simultaneous measurements of absolute atom densities and gas temperatures performed in moderate-pressure reactive plasmas using an advanced ps-TALIF diagnostic and has been demonstrated for highly collisional hydrogen microplasmas. Furthermore, this methodology was applied to obtain a 2D distribution of gas temperature and H-atom densities in the downstream region of the microplasma discharge.

Domaines

Plasmas
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Dates et versions

hal-04202967 , version 1 (11-09-2023)
hal-04202967 , version 2 (26-03-2024)

Identifiants

Citer

Abdoulaye Constant Siby, Dimitrios Stefas, Yanis Agha, Laurent Invernizzi, Kristaq Gazeli, et al.. Gas temperature measurements from ps-TALIF in highly collisional plasmas. Physics of Plasmas, 2024, 31 (3), pp.3506. ⟨10.1063/5.0189326⟩. ⟨hal-04202967v1⟩
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