Experimental characterization of discharge plasma dynamics in a square capillary for prospective applications in laser wakefield acceleration

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F10974938%3A_____%2F25%3A25_86_09" target="_blank" >RIV/10974938:_____/25:25_86_09 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1063/5.0260100" target="_blank" >https://doi.org/10.1063/5.0260100</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0260100" target="_blank" >10.1063/5.0260100</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental characterization of discharge plasma dynamics in a square capillary for prospective applications in laser wakefield acceleration

Popis výsledku v původním jazyce

Research on plasma generated by electrical discharge in gas-filled capillaries plays an important role in advancing laser wakefield accelerators. We present a comprehensive study of the temporal and spatial distribution of plasma density within a short, 1 cm long, square-shaped capillary filled with hydrogen gas. Two transverse capillary sizes, 500 mu m and 300 mu m, were investigated achieving peak plasma densities of 0.9 x 10(18) cm(-3) and 2.5 x 10(18) cm(-3), respectively, at the capillary center. In addition, we explore how these distributions depend on discharge parameters, specifically discharge current and gas flow through the capillary. Plasma density was determined by analyzing the Stark broadening of the hydrogen Balmer-alpha line. The results obtained were compared with the theoretical models and simulations. The comparison between the model predictions and the experimental data at the transient ionization stage of the discharge reveals a discrepancy of a factor of similar to 1.3-2.1, depending on the capillary size, which is thoroughly discussed. (c) 2025 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution-NonCommercialNoDerivs 4.0 International (CC BY-NC-ND) license (https://creativecommons.org/licenses/by-nc-nd/4.0/).

Název v anglickém jazyce

Experimental characterization of discharge plasma dynamics in a square capillary for prospective applications in laser wakefield acceleration

Popis výsledku anglicky

Research on plasma generated by electrical discharge in gas-filled capillaries plays an important role in advancing laser wakefield accelerators. We present a comprehensive study of the temporal and spatial distribution of plasma density within a short, 1 cm long, square-shaped capillary filled with hydrogen gas. Two transverse capillary sizes, 500 mu m and 300 mu m, were investigated achieving peak plasma densities of 0.9 x 10(18) cm(-3) and 2.5 x 10(18) cm(-3), respectively, at the capillary center. In addition, we explore how these distributions depend on discharge parameters, specifically discharge current and gas flow through the capillary. Plasma density was determined by analyzing the Stark broadening of the hydrogen Balmer-alpha line. The results obtained were compared with the theoretical models and simulations. The comparison between the model predictions and the experimental data at the transient ionization stage of the discharge reveals a discrepancy of a factor of similar to 1.3-2.1, depending on the capillary size, which is thoroughly discussed. (c) 2025 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution-NonCommercialNoDerivs 4.0 International (CC BY-NC-ND) license (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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

—

Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Physics of Plasmas

ISSN

1070-664X

e-ISSN

1089-7674

Svazek periodika

32

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

043511 (1-13)

Kód UT WoS článku

001472340600002

EID výsledku v databázi Scopus

2-s2.0-105003296884