Počet záznamů: 1
Luminous phase of nanosecond discharge in deionized water: morphology, propagation velocity and optical emission.
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SYSNO ASEP 0476024 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Luminous phase of nanosecond discharge in deionized water: morphology, propagation velocity and optical emission. Tvůrce(i) Šimek, Milan (UFP-V) RID, ORCID
Pongrác, Branislav (UFP-V)
Babický, Václav (UFP-V) RID
Člupek, Martin (UFP-V) RID
Lukeš, Petr (UFP-V) RID, ORCIDČíslo článku 07LT01 Zdroj.dok. Plasma Sources Science & Technology. - : Institute of Physics Publishing - ISSN 0963-0252
Roč. 26, č. 7 (2017)Poč.str. 9 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova water ; nanosecond discharge ; emission spectra ; breakdown Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech Obor OECD Fluids and plasma physics (including surface physics) CEP GA15-12987S GA ČR - Grantová agentura ČR Institucionální podpora UFP-V - RVO:61389021 UT WOS 000404471700001 EID SCOPUS 85021748964 DOI 10.1088/1361-6595/aa758d Anotace We employed the techniques of time-resolved intensified charge-coupled device (ICCD) microscopy and spectroscopy to register basic morphologic and emission fingerprints of micro-discharges produced in deionized water. Time resolved ICCD images evidence typical streamer-like branched filamentary morphology. Luminous discharge filaments show very fast and approximately linear initial expansion of the length with propagation velocity of ~2 × 105 m s-1. When the HV pulse reaches its maximum value, the length of the primary luminous filaments reaches ~1.3 mm. The UV-vis-NIR emission spectra show a broad-band continuum evolving during the first expansion and collapse, followed by the well-known HI/OI atomic lines occurring together with continuum emission during the second expansion and collapse. We conclude that bound-free and free-free radiative transitions are basic emission characteristics of the discharge initiation mechanism, which does not involve the formation of vapour bubbles. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2018
Počet záznamů: 1