Laser induced fluorescence in atmospheric pressure discharges

G. Dilecce, L. M. Martini, P. Tosi, M. Scotoni, S. De Benedictis

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

28 Citaten (Scopus)

Samenvatting

This paper offers an outline of laser induced fluorescence (LIF) diagnostics and practical recommendations for its use in atmospheric pressure discharges. LIF principles, technical requirements and rationalization of experimental outcomes by modelling are addressed. Important issues that are particularly relevant to small scale, spatially inhomogeneous discharges, like plasma-jets, are emphasized. For the first time, all collision processes and the spatial non-homogeneity of the laser beam are together accounted for in the LIF model. Saturation characteristics are discussed and used for the assessment of model parameters. A calibration procedure is discussed and implemented. Gas temperature measurements by LIF are also addressed. The whole description of the technique is given, without loss of generality, through the example of its application to the OH radical. Notes on other diatomic radicals, CH, NO and CN, are given along the paper. Some results in a RF plasma-jet are presented as an example of application in a discharge system where all the concepts developed in the paper are applied.

Originele taal-2Engels
Artikelnummer034007
Aantal pagina's20
TijdschriftPlasma Sources Science and Technology
Volume24
Nummer van het tijdschrift3
DOI's
StatusGepubliceerd - 1 mei 2015
Extern gepubliceerdJa

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