Unexpected rotational distribution of the ground electronic state OH(X-2 pi) generated by plasma at the interface with liquid water

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F18%3A00101208" target="_blank" >RIV/00216224:14310/18:00101208 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/1361-6595/aad0e3" target="_blank" >http://dx.doi.org/10.1088/1361-6595/aad0e3</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1361-6595/aad0e3" target="_blank" >10.1088/1361-6595/aad0e3</a>

Result language
angličtina
Original language name
Unexpected rotational distribution of the ground electronic state OH(X-2 pi) generated by plasma at the interface with liquid water
Original language description
An unexpected rotational distribution of the ground electronic state OH(X-2 pi) was observed by laser-induced fluorescence in a surface barrier discharge in contact with a liquid water interface. Analysis assuming a Boltzmann distribution yielded an unrealistically high rotational temperature above 600 K in the post-discharge phase. This is interpreted as a quasi-Boltzmann rotational distribution that is not in equilibrium with the translational temperature of the background gas. While the peculiarities of rotational distribution of excited OH(A(2) Sigma(+)) are known, the presented results show that even the ground electronic state OH(X-2 pi) does not always have to be a reliable indicator for spectroscopic thermometry in plasmas containing water. A series of similar observations challenges the usual approach in kinetic models, when the rotational distribution is assumed to follow the Boltzmann function with the temperature of surrounding gas.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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