Space-time resolved measurements of spontaneous magnetic fields in laser-produced plasma

0452249 - ÚFP 2016 RIV US eng J - Článek v odborném periodiku
Pisarczyk, T. - Gus’kov, S.Yu. - Dudžák, Roman - Chodukowski, T. - Dostál, Jan - Demchenko, N. N. - Korneev, Ph. - Kalinowska, Z. - Kalal, M. - Renner, Oldřich - Šmíd, Michal - Borodziuk, S. - Krouský, Eduard - Ullschmied, Jiří - Hřebíček, Jan - Medřík, Tomáš - Golasowski, Jiří - Pfeifer, Miroslav - Skála, Jiří - Pisarczyk, P.
Space-time resolved measurements of spontaneous magnetic fields in laser-produced plasma.
Physics of Plasmas. Roč. 22, č. 10 (2015), č. článku 102706. ISSN 1070-664X. E-ISSN 1089-7674
Grant CEP: GA MŠMT LM2010014; GA MŠMT(CZ) LD14089; GA ČR GPP205/11/P712
Grant ostatní: FP7(XE) 284464
Program: FP7
Institucionální podpora: RVO:61389021 ; RVO:68378271
Klíčová slova: space-time resolved spontaneous magnetic field (SMF) * Laser System
Obor OECD: Fluids and plasma physics (including surface physics); Fluids and plasma physics (including surface physics) (FZU-D)
Impakt faktor: 2.207, rok: 2015
http://scitation.aip.org/content/aip/journal/pop/22/10/10.1063/1.4933364

The first space-time resolved spontaneous magnetic field (SMF) measurements realized on Prague Asterix Laser System are presented. The SMF was generated as a result of single laser beam (1.315 mu m) interaction with massive planar targets made of materials with various atomic numbers (plastic and Cu). Measured SMF confirmed azimuthal geometry and their maximum amplitude reached the value of 10 MG at the laser energy of 250 J for both target materials. It was demonstrated that spatial distributions of these fields are associated with the character of the ablative plasma expansion which clearly depends on the target material. To measure the SMF, the Faraday effect was employed causing rotation of the vector of polarization of the linearly polarized diagnostic beam. The rotation angle was determined together with the phase shift using a novel design of a two-channel polaro-interferometer. To obtain sufficiently high temporal resolution, the polaro-interferometer was irradiated by Ti:Sa
Trvalý link: http://hdl.handle.net/11104/0253275