Kinetic magnetization by fast electrons in laser-produced plasmas at sub-relativistic intensities

0487463 - FZÚ 2018 RIV US eng J - Journal Article
Pisarczyk, T. - Gus'kov, S. Yu. - Chodukowski, T. - Dudžák, Roman - Korneev, Ph. - Demchenko, N. N. - Kalinowska, Z. - Dostál, Jan - Zaras-Szydlowska, A. - Borodziuk, S. - Juha, Libor - Cikhardt, Jakub - Krása, Josef - Klír, Daniel - Cikhardtová, B. - Kubeš, P. - Krouský, Eduard - Krůs, Miroslav - Ullschmied, Jiří - Jungwirth, Karel - Hřebíček, Jan - Medřík, Tomáš - Golasowski, Jiří - Pfeifer, Miroslav - Renner, Oldřich - Singh, Sushil K. - Kar, S. - Ahmed, H. - Skála, Jiří - Pisarczyk, P.
Kinetic magnetization by fast electrons in laser-produced plasmas at sub-relativistic intensities.
Physics of Plasmas. Roč. 24, č. 10 (2017), s. 1-11, č. článku 102711. ISSN 1070-664X. E-ISSN 1089-7674
R&D Projects: GA MŠMT EF15_008/0000162; GA MŠMT LQ1606; GA MŠMT LM2017094
EU Projects: European Commission(XE) 654148 - LASERLAB-EUROPE
Grant - others:ELI Beamlines(XE) CZ.02.1.01/0.0/0.0/15_008/0000162
Institutional support: RVO:68378271 ; RVO:61389021
Keywords : laser-produced plasma * femtosecond polaro-interferometry * spontaneous magnetic fiel * spatial and temporal electron density distribution
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 1.941, year: 2017

The problem of spontaneous magnetic field generation with nanosecond laser pulses raises a series of fundamental questions, including the intrinsic magnetization mechanisms in laser-driven plasmas and the understanding of charge-discharge processes in the irradiated target. These two issues are tightly bound as the charge-discharge processes are defined by the currents, which have in turn a feedback by magnetic fields in the plasma. Using direct polaro-interferometric measurements and theoretical analysis, we show that at parameters related to the PALS laser system, fast electrons play a decisive role in the generation of magnetic fields in the laser-driven plasma. Spatial distributions of currents were calculated from the measured magnetic field and plasma density distributions. The obtained results revealed the characteristics of strong currents observed in capacitor-coil magnetic generation schemes and open a new approach to fundamental studies related to magnetized plasmas.

Permanent Link: http://hdl.handle.net/11104/0282119