Počet záznamů: 1
Filamented plasmas in laser ablation of solids
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SYSNO ASEP 0334667 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Filamented plasmas in laser ablation of solids Překlad názvu Filamentace plasmatu v laserové ablaci pevných látek Tvůrce(i) Davies, J.R. (PT)
Fajardo, M. (PT)
Kozlová, Michaela (FZU-D) RID, ORCID
Mocek, Tomáš (FZU-D) RID, ORCID, SAI
Polan, Jiří (FZU-D)
Rus, Bedřich (FZU-D) ORCIDZdroj.dok. Plasma Physics and Controlled Fusion. - : Institute of Physics Publishing - ISSN 0741-3335
Roč. 51, č. 3 (2009), 035013/1-035013/12Poč.str. 12 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova magneto-hydrodynamic modelling ; perturbation ; filaments ; x-ray ; plasma Vědní obor RIV BH - Optika, masery a lasery CEZ AV0Z10100523 - FZU-D (2005-2011) UT WOS 000263382300014 DOI 10.1088/0741-3335/51/3/035013 Anotace We report results from laser-solid experiments at PALS using an x-ray laser probe with a pulse length of 0.1 ns and a wavelength of 21.2 nm. A laser with a pulse length of 0.3 ns, a peak intensity of up to 5 x 10(13) W cm(-2) and a wavelength of 1.3 mu m was focused to a 0.15 mm wide line on 3 mm long zinc and 1 mm long iron targets and the probe was passed along the length of the plasma formed. The results show plasma 'hairs', or filaments, appearing only below the critical density, 0.1 ns before the peak of the laser pulse. The plasma around the critical density was clearly imaged and remained uniform. Magneto-hydrodynamic modelling indicates that this is caused by a magnetic field that diffuses from the critical surface, where it is generated, leading to a magnetic pressure comparable to the plasma pressure below the critical density. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2010
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