Picosecond interferometry and analysis of pressure fields around nanosecond microdischarge filaments that develop in deionized water

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F20%3A00531273" target="_blank" >RIV/61389021:_____/20:00531273 - isvavai.cz</a>

Výsledek na webu

<a href="https://iopscience.iop.org/article/10.35848/1347-4065/ab75b6" target="_blank" >https://iopscience.iop.org/article/10.35848/1347-4065/ab75b6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.35848/1347-4065/ab75b6" target="_blank" >10.35848/1347-4065/ab75b6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Picosecond interferometry and analysis of pressure fields around nanosecond microdischarge filaments that develop in deionized water

Popis výsledku v původním jazyce

This study investigated pressure fields that develop around nanosecond discharges produced in deionised water by fast rise-time positive high-voltage pulses (+100 kV, duration 10 ns) on a point electrode by means of laser interferometry with high spatial resolution (0.75 μm). The concept of the Mach-Zehnder interferometer was employed using Nd:YAG laser (532 nm, 30 ps). Changes in the liquid refractive index produced a shift in the fringes in interference patterns projected by the interferometer. High spatial resolution combined with the ultrafast laser source allowed the acquisition of interferometric images at any phase of the discharge evolution. Consequently, unique results were obtained that characterised pressure fields that develop due to the propagation of a single discharge filament. The peak pressure of 500 MPa was estimated at the shock front with a radius of 2 μm, the generating filament was invisible at this early stage. The shockwave amplitudes were probably voltage independent.

Název v anglickém jazyce

Picosecond interferometry and analysis of pressure fields around nanosecond microdischarge filaments that develop in deionized water

Popis výsledku anglicky

This study investigated pressure fields that develop around nanosecond discharges produced in deionised water by fast rise-time positive high-voltage pulses (+100 kV, duration 10 ns) on a point electrode by means of laser interferometry with high spatial resolution (0.75 μm). The concept of the Mach-Zehnder interferometer was employed using Nd:YAG laser (532 nm, 30 ps). Changes in the liquid refractive index produced a shift in the fringes in interference patterns projected by the interferometer. High spatial resolution combined with the ultrafast laser source allowed the acquisition of interferometric images at any phase of the discharge evolution. Consequently, unique results were obtained that characterised pressure fields that develop due to the propagation of a single discharge filament. The peak pressure of 500 MPa was estimated at the shock front with a radius of 2 μm, the generating filament was invisible at this early stage. The shockwave amplitudes were probably voltage independent.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GA18-04676S" target="_blank" >GA18-04676S: Základní mechanismy nanosekundového výboje v kapalné vodě</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Japanese Journal of Applied Physics

ISSN

0021-4922

e-ISSN

—

Svazek periodika

59

Číslo periodika v rámci svazku

H

Stát vydavatele periodika

JP - Japonsko

Počet stran výsledku

9

Strana od-do

SHHA08

Kód UT WoS článku

000519637300009

EID výsledku v databázi Scopus

2-s2.0-85083300096