Experimental characterization of discharge plasma dynamics in a square capillary for prospective applications in laser wakefield acceleration
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Experimental characterization of discharge plasma dynamics in a square capillary for prospective applications in laser wakefield acceleration
Original language description
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/).
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - 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)
Result continuities
Project
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Continuities
R - Projekt Ramcoveho programu EK
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physics of Plasmas
ISSN
1070-664X
e-ISSN
1089-7674
Volume of the periodical
32
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
043511 (1-13)
UT code for WoS article
001472340600002
EID of the result in the Scopus database
2-s2.0-105003296884