SIMULATION OF ELECTRON INTERACTION WITH LIQUID WATER AND
PROCESSES RELATED TO SUB-NANOSECOND ELECTRICAL BREAKDOWN

D 2019

SIMULATION OF ELECTRON INTERACTION WITH LIQUID WATER AND PROCESSES RELATED TO SUB-NANOSECOND ELECTRICAL BREAKDOWN

BÍLEK, Petr a Zdeněk BONAVENTURA

Základní údaje

Originální název

SIMULATION OF ELECTRON INTERACTION WITH LIQUID WATER AND PROCESSES RELATED TO SUB-NANOSECOND ELECTRICAL BREAKDOWN

Autoři

BÍLEK, Petr (203 Česká republika, garant, domácí) a Zdeněk BONAVENTURA (203 Česká republika, domácí)

Vydání

SLEZSKA, 10TH ANNIVERSARY INTERNATIONAL CONFERENCE ON NANOMATERIALS - RESEARCH & APPLICATION (NANOCON 2018 (R)), od s. 665-670, 6 s. 2019

Nakladatel

TANGER LTD

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10305 Fluids and plasma physics

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Forma vydání

tištěná verze "print"

Odkazy

URL

Kód RIV

RIV/00216224:14310/19:00108248

Organizační jednotka

Přírodovědecká fakulta

ISBN

978-80-87294-89-5

UT WoS

000513131900114

EID Scopus

2-s2.0-85062938256

Klíčová slova anglicky

Liquid water; sub-nanosecond electrical breakdown; cavitation; negative pressure; Geant4-DNA

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 3. 4. 2020 18:41, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Sub-nanosecond electrical breakdown in dielectric liquids is of vital interest for applications, e.g. in high-voltage insulation, high-current switching and electric field-cell interactions. Liquid dielectrics in strong nonuniform electric fields are under influence of electrostrictive force that tends to move the fluid into the regions with higher electric field. If the voltage rise is fast enough(nanoseconds), the liquid does not have enough time to be set into motion in order to reduce the internal stress. In this case the electrostrictive force induces significant stress in the bulk of the liquid which is manifested as a negative pressure. At certain threshold, the negative pressure causes cavitation ruptures of the fluid. Subsequently, free electrons can be produced by emission from the surface inside the cavity and accelerated to energies exceeding the energy for ionization of water and thus, contribute to electrical breakdown of water. We present numerical model, which gives us basic ingredients necessary to study interaction of accelerated electrons with liquid water during sub-nanosecond electrical breakdown. We aim to determine geometrical conditions in electrode vicinity needed for electron multiplication and subsequent build up of space charge, for which we propose to use Monte Carlo software Geant4-DNA. Using of proper simulation techniques could enable us to explain some experimentally observed properties of sub-nanosecond electrical breakdown in liquid water.

Návaznosti

GA18-04676S, projekt VaV

Název: Základní mechanismy nanosekundového výboje v kapalné vodě

Investor: Grantová agentura ČR, Základní mechanismy nanosekundového výboje v kapalné vodě

Citovat

BÍLEK, Petr a Zdeněk BONAVENTURA. SIMULATION OF ELECTRON INTERACTION WITH LIQUID WATER AND PROCESSES RELATED TO SUB-NANOSECOND ELECTRICAL BREAKDOWN. In 10TH ANNIVERSARY INTERNATIONAL CONFERENCE ON NANOMATERIALS - RESEARCH & APPLICATION (NANOCON 2018 (R)). SLEZSKA: TANGER LTD, 2019, s. 665-670. ISBN 978-80-87294-89-5.

@inproceedings{1642598,
   author = {Bílek, Petr and Bonaventura, Zdeněk},
   address = {SLEZSKA},
   booktitle = {10TH ANNIVERSARY INTERNATIONAL CONFERENCE ON NANOMATERIALS - RESEARCH & APPLICATION (NANOCON 2018 (R))},
   keywords = {Liquid water; sub-nanosecond electrical breakdown; cavitation; negative pressure; Geant4-DNA},
   howpublished = {tištěná verze "print"},
   language = {eng},
   location = {SLEZSKA},
   isbn = {978-80-87294-89-5},
   pages = {665-670},
   publisher = {TANGER LTD},
   title = {SIMULATION OF ELECTRON INTERACTION WITH LIQUID WATER AND PROCESSES RELATED TO SUB-NANOSECOND ELECTRICAL BREAKDOWN},
   url = {https://www.nanocon.eu/files/uploads/01/NANOCON2018%20-%20Conference%20Proceedings_content.pdf},
   year = {2019}
}

TY  - CONF
ID  - 1642598
AU  - Bílek, Petr - Bonaventura, Zdeněk
PY  - 2019
TI  - SIMULATION OF ELECTRON INTERACTION WITH LIQUID WATER AND PROCESSES RELATED TO SUB-NANOSECOND ELECTRICAL BREAKDOWN
PB  - TANGER LTD
CY  - SLEZSKA
SN  - 9788087294895
KW  - Liquid water
KW  - sub-nanosecond electrical breakdown
KW  - cavitation
KW  - negative pressure
KW  - Geant4-DNA
UR  - https://www.nanocon.eu/files/uploads/01/NANOCON2018%20-%20Conference%20Proceedings_content.pdf
L2  - https://www.nanocon.eu/files/uploads/01/NANOCON2018%20-%20Conference%20Proceedings_content.pdf
N2  - Sub-nanosecond electrical breakdown in dielectric liquids is of vital interest for applications, e.g. in high-voltage insulation, high-current switching and electric field-cell interactions. Liquid dielectrics in strong nonuniform electric fields are under influence of electrostrictive force that tends to move the fluid into the regions with higher electric field. If the voltage rise is fast enough(nanoseconds), the liquid does not have enough time to be set into motion in order to reduce the internal stress. In this case the electrostrictive force induces significant stress in the bulk of the liquid which is manifested as a negative pressure. At certain threshold, the negative pressure causes cavitation ruptures of the fluid. Subsequently, free electrons can be produced by emission from the surface inside the cavity and accelerated to energies exceeding the energy for ionization of water and thus, contribute to electrical breakdown of water. We present numerical model, which gives us basic ingredients necessary to study interaction of accelerated electrons with liquid water during sub-nanosecond electrical breakdown. We aim to determine geometrical conditions in electrode vicinity needed for electron multiplication and subsequent build up of space charge, for which we propose to use Monte Carlo software Geant4-DNA. Using of proper simulation techniques could enable us to explain some experimentally observed properties of sub-nanosecond electrical breakdown in liquid water.
ER  -

BÍLEK, Petr a Zdeněk BONAVENTURA. SIMULATION OF ELECTRON INTERACTION WITH LIQUID WATER AND PROCESSES RELATED TO SUB-NANOSECOND ELECTRICAL BREAKDOWN. In \textit{10TH ANNIVERSARY INTERNATIONAL CONFERENCE ON NANOMATERIALS - RESEARCH \&{}amp; APPLICATION (NANOCON 2018 (R))}. SLEZSKA: TANGER LTD, 2019, s.~665-670. ISBN~978-80-87294-89-5.

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