Characterization of an N2 flowing microwave post-discharge by OES spectroscopy and determination of absolute ground-state nitrogen atom densities by TALIF
Identifieur interne : 001188 ( Main/Exploration ); précédent : 001187; suivant : 001189Characterization of an N2 flowing microwave post-discharge by OES spectroscopy and determination of absolute ground-state nitrogen atom densities by TALIF
Auteurs : Et Es-Sebbar [France] ; Y. Benilan [France] ; A. Jolly [France] ; M-C Gazeau [France]Source :
- Journal of Physics D: Applied Physics [ 0022-3727 ] ; 2009.
English descriptors
- Teeft :
- Absolute density, Absolute nitrogen atom densities, Active species, Afterglow, Appl, Atmospheric pressure, Atom densities, Atomic nitrogen, Characteristic time, Dark space, Discharge power, Discharge tube, Excitation, Experimental conditions, Experimental setup, Gure, Krypton, Laser, Laser beam, Laser energy, Late afterglow, Microwave, Microwave discharge, Microwave discharge power, Microwave power, Nitrogen atoms, Optical emission spectroscopy, Owing, Owing microwave, Photon, Phys, Pink afterglow, Plasma sources, Pure nitrogen, Quartz, Quartz tube, Recombination, Relative intensity, Residence time, Ricard, Room temperature, Rotational temperature, Sccm, Solid angle, Spectroscopy, Surfatron, Talif, Talif measurements, Talif spectroscopy, Technol, Torr, Uorescence, Uorescence signal, Uorescence spectroscopy, Wall recombination probability.
Abstract
A flowing microwave post-discharge source sustained at 2.45GHz in pure nitrogen has been investigated by optical emission spectroscopy (OES) and two-photon absorption laser-induced fluorescence (TALIF) spectroscopy. Variations of the optical emission along the post-discharge (near, pink and late afterglow) have been studied and the gas temperature has been determined. TALIF spectroscopy has been used in the late afterglow to determine the absolute ground-state nitrogen atomic densities using krypton as a reference gas. Measurements show that the microwave flowing post-discharge is an efficient source of N (4S) atoms in late afterglow. In our experimental conditions, the maximum N (4S) density is about 2.2 1015cm3 for a pressure of 22Torr, at 300K. The decay of N (4S) density as a function of the time spent in the quartz tube has been modelled and a wall recombination probability of (2.1 0.3) 104 is obtained.
Url:
DOI: 10.1088/0022-3727/42/13/135206
Affiliations:
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Phys.</title><idno type="ISSN">0022-3727</idno><idno type="eISSN">1361-6463</idno><imprint><publisher>IOP Publishing</publisher><date type="published" when="2009">2009</date><biblScope unit="volume">42</biblScope><biblScope unit="issue">13</biblScope><biblScope unit="page" from="1">1</biblScope><biblScope unit="page" to="11">11</biblScope><biblScope unit="production">Printed in the UK</biblScope></imprint><idno type="ISSN">0022-3727</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-3727</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="Teeft" xml:lang="en"><term>Absolute density</term><term>Absolute nitrogen atom densities</term><term>Active species</term><term>Afterglow</term><term>Appl</term><term>Atmospheric pressure</term><term>Atom densities</term><term>Atomic nitrogen</term><term>Characteristic time</term><term>Dark space</term><term>Discharge power</term><term>Discharge tube</term><term>Excitation</term><term>Experimental conditions</term><term>Experimental setup</term><term>Gure</term><term>Krypton</term><term>Laser</term><term>Laser beam</term><term>Laser energy</term><term>Late afterglow</term><term>Microwave</term><term>Microwave discharge</term><term>Microwave discharge power</term><term>Microwave power</term><term>Nitrogen atoms</term><term>Optical emission spectroscopy</term><term>Owing</term><term>Owing microwave</term><term>Photon</term><term>Phys</term><term>Pink afterglow</term><term>Plasma sources</term><term>Pure nitrogen</term><term>Quartz</term><term>Quartz tube</term><term>Recombination</term><term>Relative intensity</term><term>Residence time</term><term>Ricard</term><term>Room temperature</term><term>Rotational temperature</term><term>Sccm</term><term>Solid angle</term><term>Spectroscopy</term><term>Surfatron</term><term>Talif</term><term>Talif measurements</term><term>Talif spectroscopy</term><term>Technol</term><term>Torr</term><term>Uorescence</term><term>Uorescence signal</term><term>Uorescence spectroscopy</term><term>Wall recombination probability</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">A flowing microwave post-discharge source sustained at 2.45GHz in pure nitrogen has been investigated by optical emission spectroscopy (OES) and two-photon absorption laser-induced fluorescence (TALIF) spectroscopy. Variations of the optical emission along the post-discharge (near, pink and late afterglow) have been studied and the gas temperature has been determined. TALIF spectroscopy has been used in the late afterglow to determine the absolute ground-state nitrogen atomic densities using krypton as a reference gas. Measurements show that the microwave flowing post-discharge is an efficient source of N (4S) atoms in late afterglow. In our experimental conditions, the maximum N (4S) density is about 2.2 1015cm3 for a pressure of 22Torr, at 300K. The decay of N (4S) density as a function of the time spent in the quartz tube has been modelled and a wall recombination probability of (2.1 0.3) 104 is obtained.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Île-de-France</li></region><settlement><li>Crteil</li></settlement></list><tree><country name="France"><region name="Île-de-France"><name sortKey="Es Sebbar, Et" sort="Es Sebbar, Et" uniqKey="Es Sebbar E" first="Et" last="Es-Sebbar">Et Es-Sebbar</name></region><name sortKey="Benilan, Y" sort="Benilan, Y" uniqKey="Benilan Y" first="Y" last="Benilan">Y. Benilan</name><name sortKey="Benilan, Y" sort="Benilan, Y" uniqKey="Benilan Y" first="Y" last="Benilan">Y. Benilan</name><name sortKey="Es Sebbar, Et" sort="Es Sebbar, Et" uniqKey="Es Sebbar E" first="Et" last="Es-Sebbar">Et Es-Sebbar</name><name sortKey="Gazeau, M C" sort="Gazeau, M C" uniqKey="Gazeau M" first="M-C" last="Gazeau">M-C Gazeau</name><name sortKey="Jolly, A" sort="Jolly, A" uniqKey="Jolly A" first="A" last="Jolly">A. Jolly</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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