Simulation of electron interactions with liquid water and processes related to sub-nanosecond electrical breakdown

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F18%3A00498242" target="_blank" >RIV/61389021:_____/18:00498242 - isvavai.cz</a>

Výsledek na webu

<a href="http://ocs.ciemat.es/EPS2018PAP/pdf/O5.304.pdf" target="_blank" >http://ocs.ciemat.es/EPS2018PAP/pdf/O5.304.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Simulation of electron interactions with liquid water and processes related to sub-nanosecond electrical breakdown

Popis výsledku v původním jazyce

Sub-nanosecond electrical breakdown in dielectric liquids is of vital interest, e.g. for applicationsnin high-voltage insulation and high-current switching. Liquid dielectrics in strongnnonuniform electric fields are under influence of electrostrictive force that tends to move thenfluid into the regions with higher electric field. If the voltage rise is fast enough, the liquid doesnnot have enough time to be set into motion in order to reduce the internal stress. In this casenthe ponderomotive force induces significant stress in the bulk of the liquid which is manifestednas a negative pressure. At certain threshold, the negative pressure causes cavitation ruptures ofnthe fluid. Subsequently, free electrons can be produced by emission from the surface inside thencavity and accelerated to energies exceeding the energy for ionization of water and contributento ultrafast electrical breakdown of water.

Název v anglickém jazyce

Simulation of electron interactions with liquid water and processes related to sub-nanosecond electrical breakdown

Popis výsledku anglicky

Sub-nanosecond electrical breakdown in dielectric liquids is of vital interest, e.g. for applicationsnin high-voltage insulation and high-current switching. Liquid dielectrics in strongnnonuniform electric fields are under influence of electrostrictive force that tends to move thenfluid into the regions with higher electric field. If the voltage rise is fast enough, the liquid doesnnot have enough time to be set into motion in order to reduce the internal stress. In this casenthe ponderomotive force induces significant stress in the bulk of the liquid which is manifestednas a negative pressure. At certain threshold, the negative pressure causes cavitation ruptures ofnthe fluid. Subsequently, free electrons can be produced by emission from the surface inside thencavity and accelerated to energies exceeding the energy for ionization of water and contributento ultrafast electrical breakdown of water.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

45th EPS Conference on Plasma Physics

ISBN

979-10-96389-08-7

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

1656-1659

Název nakladatele

European Physical Society

Místo vydání

Mulhouse

Místo konání akce

Praha

Datum konání akce

2. 7. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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