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Type: Artigo de periódico
Title: The Crucial Role Of Molecular Ions In The Radial Contraction Of Argon Microwave-sustained Plasma Jets At Atmospheric Pressure
Author: Ridenti M.A.
Spyrou N.
Amorim J.
Abstract: Fourteen ions (Ar+, Ar2+, ArH+, H2O +, H+(H2O), H+(H2O) 2, O+, O2+, OH+, NO+, N2+, N +, Ar2+, N4+) were detected, by mass-resolved ion-energy measurements when the discharge was operated at 50 W and fluxes of 2.5 and 5.0 slm. The crucial role of three molecular ions (Ar2+, ArH+, H2O +) during the radial contraction, from diffuse (r = (750 ± 50) μm) to contracted plasma jet (r = (500 ± 50) μm), and the relationship between power, gas flow and molecular ions production were pointed out. Ion energy distributions for Ar2+, ArH+ and H2O + exhibit their maxima at high-energies due to low-energy threshold for three-body collision reactions. © 2014 Elsevier B.V. All rights reserved.
Rights: fechado
Identifier DOI: 10.1016/j.cplett.2014.01.050
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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