Non-classic efficient cavity pressure acceleration method applied to obtain very fast and dense macroparticles

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Non-classic efficient cavity pressure acceleration method applied to obtain very fast and dense macroparticles

Popis výsledku v původním jazyce

In the investigations a scheme called cavity pressure acceleration (CPA) was applied, which allows propelling plasma objects in arbitrary direction in relation to the laser beam incident on a target and more efficient use of laser pulse energy absorbed and definitely increasing pressurencausing acceleration of the foils. CPA eliminates the basic contradiction of the classic ablative acceleration process, in which this way of getting high microprojectile velocity simultaneously leads to mass loosing and density decreasing. Results obtained on PALS (Prague Asterix LasernSystem) show that the application of the CPA method allows for speed of the driven plasma objects to obtain values (average velocity 6x107 cm/s) comparable with top global results. Several other important results were also obtained e.g.: successful attempt to drive very thicknfoils (up to 500 micro m Al) to the speed of 1.0x107 cm/s, the result is not having its counterpart in the literature and indication of a simple and effective method to significantly increase the density of driven objects without significant reduction of speed through the use of targets withn"covered channel", which leads to a much higher energy density transmitted by the driven object, and the very high pressure generated by it, which is very important advantage in terms of possible use in impact fast ignition experiments

Název v anglickém jazyce

Non-classic efficient cavity pressure acceleration method applied to obtain very fast and dense macroparticles

Popis výsledku anglicky

In the investigations a scheme called cavity pressure acceleration (CPA) was applied, which allows propelling plasma objects in arbitrary direction in relation to the laser beam incident on a target and more efficient use of laser pulse energy absorbed and definitely increasing pressurencausing acceleration of the foils. CPA eliminates the basic contradiction of the classic ablative acceleration process, in which this way of getting high microprojectile velocity simultaneously leads to mass loosing and density decreasing. Results obtained on PALS (Prague Asterix LasernSystem) show that the application of the CPA method allows for speed of the driven plasma objects to obtain values (average velocity 6x107 cm/s) comparable with top global results. Several other important results were also obtained e.g.: successful attempt to drive very thicknfoils (up to 500 micro m Al) to the speed of 1.0x107 cm/s, the result is not having its counterpart in the literature and indication of a simple and effective method to significantly increase the density of driven objects without significant reduction of speed through the use of targets withn"covered channel", which leads to a much higher energy density transmitted by the driven object, and the very high pressure generated by it, which is very important advantage in terms of possible use in impact fast ignition experiments

Druh

D - Stať ve sborníku

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

EPS 2016: 43rd European Physical Society Conference on Plasma Physics

ISBN

2-914771-99-1

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 Physical Society

Místo vydání

Mulhouse

Místo konání akce

Leuven

Datum konání akce

4. 7. 2016

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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