Pulsed discharge in a large diameter tube with long-lasting pre-ionization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F10974938%3A_____%2F25%3A25_86_01" target="_blank" >RIV/10974938:_____/25:25_86_01 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/25:00380690 RIV/68407700:21460/25:00380690

Výsledek na webu

<a href="https://doi.org/10.1063/5.0238910" target="_blank" >https://doi.org/10.1063/5.0238910</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0238910" target="_blank" >10.1063/5.0238910</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Pulsed discharge in a large diameter tube with long-lasting pre-ionization

Popis výsledku v původním jazyce

The evolution of a nitrogen plasma discharge in a tube with an inner diameter of 9.2 mm, excited by a particular pulse shape, is studied to suppress ablation from the inner wall. Excitation is realized by two current pulses. The first one is a long pre-ionization pulse, which guarantees the stability of the plasma column, and the second one is a higher current pulse, which causes the detachment of the discharge plasma from the wall. The evolution of plasma in the tube is modeled using the magneto-hydrodynamic code NPINCH in two approximations: (1) non-ablative and (2) strongly ablative walls. The time dependences of the optical radiation power in the direction along the discharge tube axis are measured and compared with simulated experimental results in non-ablative and ablative approaches. Time dependence of the measured optical radiation emission corresponds to the non-ablative model. In the selected large diameter capillary, the development of the pinching plasma is not significantly affected by the ablation of the material from the capillary walls.

Název v anglickém jazyce

Pulsed discharge in a large diameter tube with long-lasting pre-ionization

Popis výsledku anglicky

The evolution of a nitrogen plasma discharge in a tube with an inner diameter of 9.2 mm, excited by a particular pulse shape, is studied to suppress ablation from the inner wall. Excitation is realized by two current pulses. The first one is a long pre-ionization pulse, which guarantees the stability of the plasma column, and the second one is a higher current pulse, which causes the detachment of the discharge plasma from the wall. The evolution of plasma in the tube is modeled using the magneto-hydrodynamic code NPINCH in two approximations: (1) non-ablative and (2) strongly ablative walls. The time dependences of the optical radiation power in the direction along the discharge tube axis are measured and compared with simulated experimental results in non-ablative and ablative approaches. Time dependence of the measured optical radiation emission corresponds to the non-ablative model. In the selected large diameter capillary, the development of the pinching plasma is not significantly affected by the ablation of the material from the capillary walls.

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

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

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

023505

Kód UT WoS článku

001418756400002

EID výsledku v databázi Scopus

2-s2.0-85218340176