A cylindrical implosion platform for the study of highly magnetized plasmas at LMJ

Pérez-Callejo, G.; Vlachos, C.; Walsh, C. A.; Florido, R.; Bailly-Grandvaux, M.; Vaisseau, X.; Suzuki-Vidal, F.; McGuffey, C.; Beg, F. N.; Bradford, P.; Ospina-Bohórquez, V.; Batani, D.; Raffestin, D.; Colaïtis, A.; Tikhonchuk, V.; Casner, A.; Koenig, M.; Albertazzi, B.; Fedosejevs, R.; Woolsey, N.; Ehret, M.; Debayle, A.; Loiseau, P.; Calisti, A.; Ferri, S.; Honrubia, J.; Kingham, R.; Mancini, R. C.; Gigosos, M. A.; Santos, J. J.

doi:10.48550/arxiv.2203.12099

Cited by 1 publication

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References 51 publications

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“…Large opportunities in the research related to the implementation of inertial fusion by magnetic implosion are offered by optical generators of strong magnetic fields based on laserdriven-coil targets (LDCT) [13][14][15]. Such targets are predicted to implement the idea of the ICF magnetic implosion on the Laser Mégajoule (LMJ) laser system in Bordeaux, their role bears upon pre-magnetizing a cylindrical target with fuel [16]. The assessments presented in that paper show that for laser intensities of around 10 15 W cm −2 available on the LMJ, the conditions for extreme magnetization can be reached using a relatively low seed B-field.…”

Section: Introductionmentioning

confidence: 99%

Influence of the magnetic field on properties of hot electron emission from ablative plasma produced at laser irradiation of a disc-coil target

Pisarczyk

Renner

Dudžák

et al. 2022

Plasma Phys. Control. Fusion

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Optical generators of strong magnetic fields based on the laser-driven-coil target (LDCT) concept are considered to be useful tools for studies of magnetized plasmas, in particular for the study of implosion of magnetized fusion targets in inertial fusion research and astrophysical applications. This paper presents results of the research directed at investigation of the plasma properties in a laser-induced magnetic field. In the experiment carried out on the kilojoule PALS laser facility, a generator of the magnetic field was a disc-coil (DC) target composed of a Cu disk coupled to a single-turn coil irradiated by a 1ω laser beam with an energy of 500 J. The attention was focused on examining the influence of the magnetic field on properties of the hot electron (HE) flux emitted from the front surface of the irradiated target. The 3-frame complex interferometry and 4-frame X-ray camera combined with the measurements of the HE population and energy using a multi-channel magnetic electron spectrometer and 2D-resolved imaging of the induced Cu Kα line emission were applied to characterize the ablative plasma and the generated particles. Based on the measured angular distributions of the electron energy spectra, 3D simulations have been performed to visualize the effect of the magnetic field on the HE flux and to provide information on space-time distribution of the electron and current density both without and with the presence of an axial magnetic field. The obtained results confirmed the possibility of generating magnetic fields above 5 T using the proposed DC target design as well as the significant impact of these fields on properties of the ablative plasma and the hot electron emission.

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