Effect of transverse magnetic field on hot electron and ion fluxes generated by laser interactions with disc-double-coil targets

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F26%3A00648113" target="_blank" >RIV/61389021:_____/26:00648113 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.nature.com/articles/s41598-025-28966-8" target="_blank" >https://www.nature.com/articles/s41598-025-28966-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41598-025-28966-8" target="_blank" >10.1038/s41598-025-28966-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of transverse magnetic field on hot electron and ion fluxes generated by laser interactions with disc-double-coil targets

Popis výsledku v původním jazyce

nSuccess of hitherto experiments carried out on PALS using disc-coil (DC) targets irradiated by 1 omega and 3 omega 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 K alpha 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 1 omega irradiated targets agree with results of simulations.

Název v anglickém jazyce

Effect of transverse magnetic field on hot electron and ion fluxes generated by laser interactions with disc-double-coil targets

Popis výsledku anglicky

nSuccess of hitherto experiments carried out on PALS using disc-coil (DC) targets irradiated by 1 omega and 3 omega 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 K alpha 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 1 omega irradiated targets agree with results of simulations.

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2026

Kód důvěrnosti údajů

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

Název periodika

Scientific Reports

ISSN

2045-2322

e-ISSN

2045-2322

Svazek periodika

16

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

27

Strana od-do

180

Kód UT WoS článku

001652546300001

EID výsledku v databázi Scopus

2-s2.0-105026353545