Evolution of filament-like compact structures in small 3 kJ dense plasma focus discharges

This paper presents the filamentary structure of the pinched column in a smaller plasma focus device filled with deuterium. The deflections were observed using schlieren and differential interferometry techniques. The observed filaments have a transverse diameter of 40–200 μm, which could be interpreted based on the electric current hypothesis as local concentrations of electric current. The evolution of filaments was compared with global structures recorded by extra ultraviolet frames. These results provide a basis for considering the possibility of a filamentary composition of the poloidal current in compact structures. The model of filaments with a helical shape of electrical current may be able to explain the central narrow and dense cord in the axis of the column, the different lifetimes of the structures, and the submillimeter sources of fast electrons and ions.

Authors

Institutions

Publication Details

Journal
Physics of Plasmas
Published
2024-08-01
DOI
https://doi.org/10.1063/5.0187304
Citations
2
Primary Topic
Laser-Plasma Interactions and Diagnostics
Type
article
Field-Weighted Citation Impact
1.32

Funders

Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

Evolution of filament-like compact structures in small 3 kJ dense plasma focus discharges

Marek J. Sadowski, K. Řezáč, J. Cikhardt, J. Malir et al.
2 citations
Physics of Plasmas
Laser-Plasma Interactions and Diagnostics
1.32
article

Evolution of filament-like compact structures in small 3 kJ dense plasma focus discharges

Marek J. Sadowski, K. Řezáč, J. Cikhardt, J. Malir, J. Novotný, V. Munzar, Ł. Marciniak, P. Kubeš, B. Cikhardtová, J. Kravárik, M. Paduch
article en
2 citations

Abstract

This paper presents the filamentary structure of the pinched column in a smaller plasma focus device filled with deuterium. The deflections were observed using schlieren and differential interferometry techniques. The observed filaments have a transverse diameter of 40–200 μm, which could be interpreted based on the electric current hypothesis as local concentrations of electric current. The evolution of filaments was compared with global structures recorded by extra ultraviolet frames. These results provide a basis for considering the possibility of a filamentary composition of the poloidal current in compact structures. The model of filaments with a helical shape of electrical current may be able to explain the central narrow and dense cord in the axis of the column, the different lifetimes of the structures, and the submillimeter sources of fast electrons and ions.

Physics of PlasmasVol. 31(8)
International Laboratory of High Magnetic Fields and Low Temperatures (PL), Institute of Plasma Physics and Laser Microfusion (PL), Czech Technical University in Prague (CZ)
Georgia Advanced Computing Resource Center, University of Georgia, Research Center for Informatics, Czech Technical University in Prague
Openalex Percentile: Top 11%
Laser-Plasma Interactions and Diagnostics
1.32
DOIOpen Access PDFOpenAlex
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.