2D MHD simulation of spontaneous magnetic fields generated during interaction of 1315.2-nm laser radiation with copper slabs at 10sup16/sup W/cmsup2/sup

0579893 - ÚFP 2024 RIV US eng J - Článek v odborném periodiku
Jach, K. - Pisarczyk, T. - Stepniewski, W. - Swierczynski, R. - Krása, J. - Chodukowski, T. - Rusiniak, Z. - Zaraś-Szydłowska, A. - Dostál, Jan - Dudžák, Roman - Juha, Libor - Kochetkov, Iu. - Krupka, Michal - Borodziuk, S.
2D MHD simulation of spontaneous magnetic fields generated during interaction of 1315.2-nm laser radiation with copper slabs at 10sup16/sup W/cmsup2/sup.
Physics of Plasmas. Roč. 28, č. 9 (2021), č. článku 092704. ISSN 1070-664X. E-ISSN 1089-7674
Grant CEP: GA MŠMT(CZ) LM2015083; GA MŠMT(CZ) LM2018114; GA MŠMT LTT17015; GA MŠMT EF16_013/0001552; GA ČR(CZ) GA19-24619S
GRANT EU: European Commission(XE) 654148 - LASERLAB-EUROPE; European Commission(XE) 871124 - LASERLAB-EUROPE; European Commission(XE) 633053 - EUROfusion
Institucionální podpora: RVO:61389021
Klíčová slova: MHD simulations * magnetic fields * laser-produced plasma
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 2.357, rok: 2021
Způsob publikování: Open access
https://pubs.aip.org/aip/pop/article/28/9/092704/595495/2D-MHD-simulation-of-spontaneous-magnetic-fields

Multidimensional modeling of phenomena and processes occurring during the expansion of the laser-produced plasma for different irradiation conditions related to both the laser beam parameters and the target constructions is a very complex issue, especially when modeling requires consideration of kinetic processes associated with the development of various types of microscopic instability. Multidimensional PIC codes create such a possibility, but their use is limited to modeling phenomena even in a very narrow timescale due to the limited computational capabilities of current supercomputers. For this reason, the paper attempts to interpret the results of the spontaneous magnetic field (SMF) measurements obtained during the PALS (Prague Asterix Laser System) experiment [Pisarczyk et al., AIP Adv. 10, 115201 (2020), Pisarczyk et al., Phys. Plasmas 22, 102706 (2015)] based on the 2D magneto-hydrodynamic (MHD) model [Jach et al., Computer Modeling of Dynamic Interaction of Bodies by Free Point Method (PWN, Warsaw, 2011)]. The MHD equations were used with included arbitrary (i) current of hot electrons treating it as an additional external current and (ii) ion-sound instability responsible for the increase in anomalous resistance in areas with high temperature and low-density plasma. The spatial distribution of magnetic fields and current density obtained from 2D modeling are in acceptable agreement with the experimental results [Pisarczyk et al., Plasma Phys. Controlled Fusion 62, 115020 (2020), Zaraś-Szydłowska et al., AIP Adv. 10, 115201 (2020), Pisarczyk et al., Phys. Plasmas 22, 102706 (2015)]. The inclusion of temporal changes in anomalous resistance in modeling allowed us to explain the persistence of high SMF amplitude at the level of several megagauss after the laser pulse ended due to the effect of magnetic field freezing.
Trvalý link: https://hdl.handle.net/11104/0348678