Effect of transverse magnetic field on hot electron and ion fluxes generated by laser interactions with disc-double-coil targets
Success of hitherto experiments carried out on PALS using disc-coil (DC) targets irradiated by 1ω and 3ω beam of the PALS laser, in which magnetic fields of axial geometry with respect to the laser beam axis and induction above 5T were generated, initiated a complementary research directed on creation of magnetized plasma jets in a magnetic field with transverse geometry of force lines in relation to the laser direction. This configuration is important for implementation of inertial fusion by magnetic implosion. In order to understand the influence of the transverse magnetic field on the emission parameters of hot electrons (HE) and ions from the ablation plasma, innovative disc-coil targets (DCT-DC) were used, consisting of a Cu disk coupled with a system of two coils. Comprehensive diagnostics included 2D and 1D space-time resolved imaging of the Cu Kα line emission, a multichannel magnetic electron spectrometer was used to measure the angular distribution of the HE energy spectra. Ion collectors, target current probes, X-ray spectroscopy, and plasma visualization in the soft X-ray range using a 4-frame X-ray camera were used as additional diagnostics. To characterize the plasma streams created under Cu-discs irradiation by laser beams and to determine the regions with electron density corresponding to the most probable mechanisms of the HE generation, were defined by 3-frame complex interferometry. Numerical simulations of experimental results based on the three-dimensional PIC code EPOCH provided a basic insight into mechanisms of HE propagation in a transverse magnetic field. The performed experiments demonstrated that the presence of the transverse magnetic field leads to a spatial broadening of the HE emitting region and to an increase of the HE energy, both in the backward and forward direction from the target. The increased fluxes of higher energy HEs observed at 1ω irradiated targets agree with results of simulations.
Authors
- J. Badziak (ORCID: https://orcid.org/0000-0002-8687-1688)
- S. K. Singh (ORCID: https://orcid.org/0000-0001-5754-2431)
- R. Miklaszewski (ORCID: https://orcid.org/0000-0001-7422-6158)
- A. Morace (ORCID: https://orcid.org/0000-0001-8795-834X)
- A. Zaraś‐Szydłowska (ORCID: https://orcid.org/0000-0003-1291-6123)
- O. Renner (ORCID: https://orcid.org/0000-0003-4942-2637)
- S. Borodziuk (ORCID: https://orcid.org/0000-0003-2340-4879)
- J. Cikhardt (ORCID: https://orcid.org/0000-0002-8222-8038)
- Shubham Agarwal (ORCID: https://orcid.org/0000-0002-0140-2859)
- P. Tchórz (ORCID: https://orcid.org/0000-0002-3674-607X)
- P Gajdoš (ORCID: https://orcid.org/0000-0002-8949-6262)
- T. Chodukowski (ORCID: https://orcid.org/0000-0001-5835-1485)
- M. Krupka (ORCID: https://orcid.org/0000-0003-0784-4145)
- D. Klír (ORCID: https://orcid.org/0000-0002-0510-3653)
- L. Juha (ORCID: https://orcid.org/0000-0003-4189-8753)
- M. Krůs (ORCID: https://orcid.org/0000-0002-8595-3139)
- J. Dostál (ORCID: https://orcid.org/0000-0002-4622-0717)
- B. Cikhardtová (ORCID: https://orcid.org/0000-0003-3636-2794)
- Jarosław Domański (ORCID: https://orcid.org/0000-0002-2149-1123)
- T. Pisarczyk (ORCID: https://orcid.org/0000-0002-1109-7683)
- M. Rosiński (ORCID: https://orcid.org/0000-0002-3916-1122)
- J. J. Santos (ORCID: https://orcid.org/0000-0002-4737-8559)
- David Ettel (ORCID: https://orcid.org/0000-0003-0310-9661)
- R. Dudžák (ORCID: https://orcid.org/0000-0002-2162-2103)
- Z. Rusiniak (ORCID: https://orcid.org/0000-0002-8153-5773)
- Michal Kustosz
- W. Rafalak (ORCID: https://orcid.org/0009-0005-9484-5657)
- J. Krása (ORCID: https://orcid.org/0000-0002-3888-8370)
- H. Marchenko
- P. Devi (ORCID: https://orcid.org/0009-0004-3773-8356)
- N. Fefe
Institutions
- Centre National de la Recherche Scientifique (FR)
- Université de Bordeaux (FR)
- Charles University (CZ)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- Military University of Technology in Warsaw (PL)
- Extreme Light Infrastructure Beamlines (CZ)
- Czech Academy of Sciences, Institute of Plasma Physics (CZ)
- Centre Lasers Intenses et Applications (FR)
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ)
- Institute of Plasma Physics and Laser Microfusion (PL)
- Czech Technical University in Prague (CZ)
- The University of Osaka (JP)
Publication Details
- Journal
- Scientific Reports
- Published
- 2025-11-21
- DOI
- https://doi.org/10.1038/s41598-025-28966-8
- Primary Topic
- Laser-Plasma Interactions and Diagnostics
- Type
- article
- Field-Weighted Citation Impact
- 0.00