Magnetic field induced by laser-driven target current
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F16%3A00328666" target="_blank" >RIV/68407700:21230/16:00328666 - isvavai.cz</a>
Výsledek na webu
<a href="http://ocs.ciemat.es/EPS2016PAP/pdf/P1.083.pdf" target="_blank" >http://ocs.ciemat.es/EPS2016PAP/pdf/P1.083.pdf</a>
DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Magnetic field induced by laser-driven target current
Popis výsledku v původním jazyce
This contribution deals with direct observation of a transient magnetic field induced by a current flowing through the target holder to balance the target charging caused by intense laser radiation delivered by the 3 TW, 300 ps laser system PALS. Both the target and its holder fixed to the interaction chamber react to the target ablation as an electrical circuit, which emits electromagnetic pulses in the megahertz to gigahertz domain. For this reason the interaction chamber is considered as a resonant cavity in which different modes of EM field oscillate for hundreds of nanoseconds until EM waves are completely lost. We present an inductive target probe developed by Cikhardt et al. Rev. Sci. Instrum. 85 (2014) 103507, allowing the direct observation of the transient target current. Since the applied inductive target probe is resistive against the interfering electromagnetic pulse (EMP) occurred inside the interaction chamber where the charged particles are accelerated, the relationship between the magnetic part of the EMP elsewhere inside and outside the interaction chamber and the magnetic field induced by the neutralization target current can be obtained. Frequency analysis indicates a multimode frequency distribution of EMP spectra which arises as a mixture of large number of modes.
Název v anglickém jazyce
Magnetic field induced by laser-driven target current
Popis výsledku anglicky
This contribution deals with direct observation of a transient magnetic field induced by a current flowing through the target holder to balance the target charging caused by intense laser radiation delivered by the 3 TW, 300 ps laser system PALS. Both the target and its holder fixed to the interaction chamber react to the target ablation as an electrical circuit, which emits electromagnetic pulses in the megahertz to gigahertz domain. For this reason the interaction chamber is considered as a resonant cavity in which different modes of EM field oscillate for hundreds of nanoseconds until EM waves are completely lost. We present an inductive target probe developed by Cikhardt et al. Rev. Sci. Instrum. 85 (2014) 103507, allowing the direct observation of the transient target current. Since the applied inductive target probe is resistive against the interfering electromagnetic pulse (EMP) occurred inside the interaction chamber where the charged particles are accelerated, the relationship between the magnetic part of the EMP elsewhere inside and outside the interaction chamber and the magnetic field induced by the neutralization target current can be obtained. Frequency analysis indicates a multimode frequency distribution of EMP spectra which arises as a mixture of large number of modes.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
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OECD FORD obor
10305 - Fluids and plasma physics (including surface physics)
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2016
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
43rd EPS Conference on Plasma Physics (EPS 2016), Europhysics Conference Abstracts Volume 40A
ISBN
978-1-5108-2947-3
ISSN
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e-ISSN
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Počet stran výsledku
4
Strana od-do
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Název nakladatele
European Geophysical Society
Místo vydání
Haague
Místo konání akce
Leuven
Datum konání akce
4. 7. 2016
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
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