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

Tadeusz Pisarczyk, Sergey Yu. Gus'kov, Tomasz Chodukowski, Roman Dudzak, Philipp Korneev, Nicolai N. Demchenko, Zofia Kalinowska, Jan Dostal, Agnieszka Zaras-Szydlowska, Stefan Borodziuk, Libor Juha, Jakub Cikhardt, Josef Krasa, Daniel Klir, Balzhima Cikhardtova, Pavel Kubes, Eduard Krousky, Miroslav Krus, Jiri Ullschmied, Karel JungwirthJan Hrebicek, Tomas Medrik, Jiri Golasowski, Miroslav Pfeifer, Oldrich Renner, Sushil Singh, Satyabrata Kar, Hamad Ahmed, Jiri Skala, Pawel Pisarczyk

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13 Citations (Scopus)
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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 (1.315 μ1.315 μm, 350 350 ps, and 1016 1016 W/cm2), fast electrons play a decisive role in the generation of magnetic fields in the laser-driven plasma. Spatial distributions of electric 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.
Original languageEnglish
Article number102711
Pages (from-to)1-12
JournalPhysics of Plasmas
Issue number10
Publication statusPublished - 02 Oct 2017

Bibliographical note

doi: 10.1063/1.4995044

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