Study of Expanding Thermal Plasma Jet Using Molecular Spectra
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F05%3A00022197" target="_blank" >RIV/61389021:_____/05:00022197 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Study of Expanding Thermal Plasma Jet Using Molecular Spectra
Original language description
Thermal plasmas generated by plasma torches are well-known for their high temperatures and high enthalpies. Therefore optical emission spectroscopy is appropriate diagnostic method because of strong emission of radiation corresponding to the visible light. The decay of excited atoms, ions and molecules causes emission of the light at characteristic wavelengths. Except spectral lines of atoms and ions, also some molecular bands can be seen in the spectra of the plasma jet. Especially expanding thermal plasma jet operated under low pressure conditions offers possibility of observing molecular transitions. Pressure lower than atmospheric may cause the presence of supersonic flow and departures from thermodynamic equilibrium. Spectra of OH radical have been investigated using computer code LIFBASE, which contains a lot of data regarding spectra of diatomic molecules. Radial profiles of rotational and vibrational temperatures have been found in several regions of the jet.
Czech name
Studium expandujícího proudu termického plazmatu s využitím molekulových spekter
Czech description
Práce se zabývá studiem termického plazmatu generovaného v plazmatronech s využitím metod optické emisní spektroskopie. V případě provozu při sníženém tlaku jsme pozorovali spektra molekuly OH, které jsme dále zkoumali s pomocí programu LIFBASE. Určili jsme rotační a vibrační teploty, které do určité míry charakterizují teploty těžkých částic a elektronů, a mají vztah ke stupni termodynamické nerovnováhy v plazmatu.
Classification
Type
D - Article in proceedings
CEP classification
BL - Plasma physics and discharge through gases
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GD203%2F03%2FH140" target="_blank" >GD203/03/H140: Organised materials for highly selective catalytic and separation processes</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2005
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of the XVIth Symposium on Physics of Switching Arc
ISBN
80-214-2931-3
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
141-144
Publisher name
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Place of publication
Brno
Event location
Brno
Event date
Sep 5, 2005
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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