Electron multiplication and avalanching in nanovoids at the initial stage of nanosecond discharge in liquid water

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F21%3A00119098" target="_blank" >RIV/00216224:14310/21:00119098 - isvavai.cz</a>

Alternative codes found

RIV/61389021:_____/21:00543989

Result on the web

<a href="https://doi.org/10.1088/1361-6595/abff73" target="_blank" >https://doi.org/10.1088/1361-6595/abff73</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6595/abff73" target="_blank" >10.1088/1361-6595/abff73</a>

Result language

angličtina

Original language name

Electron multiplication and avalanching in nanovoids at the initial stage of nanosecond discharge in liquid water

Original language description

This work presents a study on electron multiplication in cylindrical nanovoids formed in liquid water due to strong pulsed external electric fields. The state-of-the-art simulation toolkit Geant4-DNA is used to describe electron interactions in liquid water. Scaling laws for electron propagation are introduced, concluding that the product of the electric field strength E and the cavity radius R is a suitable parameter to compare simulation results for different values of E and R, and 1/R scaling is proposed for space and time variables. It is shown that the electron avalanche can grow inside of the nanovoid if E ⋅ R &gt; 19.4 eV. The avalanche growth is fed by the emission of the secondary electrons from the surface of the nanovoid. This electron avalanche can also provide a higher total ionization yield along the nanovoid than the simple direct flight of electrons through the nanovoid length. Characteristic electron multiplication timescale and avalanche velocity are determined. Multiplication timescale is shown to be of the order of 1 ps or shorter for electron-multiplying conditions. The velocity of the electron avalanche is about 2.8 × 106 m s−1. The multiplication timescale and the avalanche velocity are consistent with recent experimental observations on nanosecond discharge initiation in liquid water.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

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

Name of the periodical

Plasma Sources Science and Technology

ISSN

0963-0252

e-ISSN

—

Volume of the periodical

30

Issue of the periodical within the volume

6

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

„065023“

UT code for WoS article

000665717700001

EID of the result in the Scopus database

2-s2.0-85109109283