Spectroscopic study of hydrogen rotational, vibrational and translational temperatures in a hollow cathode glow discharge

The optical emission spectroscopy is used for determination of hydrogen molecule rotational Trot, vibrational Tvib, and translational temperature Ttr. The experiment was carried out using copper or titanium hollow cathode discharges operated in pure hydrogen. The rotational temperature of excited el...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 133; no. 1; p. 012022
Main Author Majstorović, G Lj
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.10.2008
Subjects
Cathode glow
Electron energy
Energy levels
Glow discharges
Hollow cathodes
Hydrogen
Optical emission spectroscopy
Physics
Rotational spectra
Temperature distribution
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Summary:The optical emission spectroscopy is used for determination of hydrogen molecule rotational Trot, vibrational Tvib, and translational temperature Ttr. The experiment was carried out using copper or titanium hollow cathode discharges operated in pure hydrogen. The rotational temperature of excited electron energy levels is determined from Fulcher-a diagonal bands (d3Πu →a3σ+gelectronic transition, P, Q and R branches), which were later used to derive rovibronic temperature of the hydrogen molecule ground state, which is assumed equal to Ttr. The vibrational temperature Tvib is determined for the same electronic transition (d3Π-u→a3σ+g, with v' = 2,3;δv = 0). For all temperatures the radial temperature distribution is reported.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/133/1/012022