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Spectroscopic investigations of high-energy-density plasma transformations in a simulated early reducing atmosphere containing methane, nitrogen and water
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SYSNO ASEP 0486366 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Spectroscopic investigations of high-energy-density plasma transformations in a simulated early reducing atmosphere containing methane, nitrogen and water Author(s) Civiš, M. (CZ)
Ferus, M. (CZ)
Knížek, A. (CZ)
Kubelík, P. (CZ)
Karnas, M. (CZ)
Španěl, P. (CZ)
Dryahina, K. (CZ)
Shestivska, V. (CZ)
Juha, Libor (UFP-V) ORCID
Skřehot, P. (CZ)
Laitl, V. (CZ)
Civiš, S. (CZ)Source Title Physical Chemistry Chemical Physics. - : Royal Society of Chemistry - ISSN 1463-9076
Roč. 18, č. 39 (2016), s. 27317-27325Number of pages 9 s. Publication form Print - P Language eng - English Country GB - United Kingdom Keywords HIGH-POWER LASER ; INDUCED DIELECTRIC-BREAKDOWN ; EARTHS EARLY ATMOSPHERE Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) R&D Projects LG15013 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2015083 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFP-V - RVO:61389021 UT WOS 000385177200035 EID SCOPUS 84991071192 DOI 10.1039/c6cp05025e Annotation Large-scale plasma was created in gas mixtures containing methane using high-power laser-induced dielectric breakdown (LIDB). The composition of the mixtures corresponded to a cometary and/or meteoritic impact into the early atmosphere of either Titan or Earth. A multiple-centimeter-sized fireball was created by focusing a single 100 J, 450 ps near-infrared laser pulse into the center of a 15 L gas cell. The excited reaction intermediates formed during the various stages of the LIDB plasma chemical evolution were investigated using optical emission spectroscopy (OES) with temporal resolution. The chemical consequences of laser-produced plasma generation in a CH4-N2-H2O mixture were investigated using high resolution Fourier-transform infrared absorption spectroscopy (FTIR) and gas selected ion flow tube spectrometry (SIFT). Several simple inorganic and organic compounds were identified in the reaction mixture exposed to ten laser sparks. Deuterated water (D2O) in a gas mixture was used to separate several of the produced isotopomers of acetylene, which were then quantified using the FTIR technique. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2018
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