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Plasma Medicine
SJR: 0.271 SNIP: 0.316 CiteScore™: 1.9

ISSN Imprimir: 1947-5764
ISSN On-line: 1947-5772

Plasma Medicine

DOI: 10.1615/PlasmaMed.2018024077
pages 83-92

Atomic Rare Gas Metastable Monitoring through Nitrogen Emission in Atmospheric Pressure Plasma Jets

Jean-Michel Pouvesle
GREMI UMR 7344 CNRS/Université d'Orléans, Orléans, France
Thibault Darny
GREMI UMR 7344 CNRS/Université d'Orléans, Orléans, France
Thomas Maho
GREMI UMR 7344 CNRS/Université d'Orléans, Orléans, France
Vincent Puech
LPGP UMR 8578 CNRS/Université Paris Sud, Orsay, France
Claire Douat
GREMI UMR 7344 CNRS/Université d'Orléans, Orléans, 45067, France
Sebastien Dozias
GREMI UMR 7344 CNRS/Université d'Orléans, Orléans, France
Eric Robert
GREMI UMR 7344 CNRS/Université d'Orléans, Orléans, France

RESUMO

He(23S) helium metastable is a key state in the energetic transfers occurring in atmospheric pressure plasma jets that are widely used for applications related to biology or material processing. Its measurement mainly relies on laser absorption, and this is not always easy to perform. In this work, we show a simple way to follow the time evolution of this state that relies on late time evolution of the transitions emitted from the N2+(B) state, which is mainly populated by Penning ionization from He(23S). Indeed, we show that the late time decay of N2+(B) is found to be the same as that of He(23S) concentration. Using previous work cited in the literature, we conclude that this type of monitoring can be used for argon metastable, with N2(C) being the tracer in that case.


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