Optical generation of compact magnetized plasma structures is studied in the moderate intensity domain. A sub-ns laser beam irradiated snail-shaped targets with the intensity of about 1016 W/cm2. With a neat optical diagnostics, a sub-megagauss magnetized plasmoid is traced inside the target. On the observed hydrodynamic time scale, the hot plasma formation achieves a theta-pinch-like density and magnetic field distribution, which implodes into the target interior. This simple and elegant plasma magnetization scheme in the moderate-intensity domain is of particular interest for fundamental astrophysical-related studies and for development of future technologies.

Center for Relativistic Laser Science IBS Gwang Ju 61005 Korea

Faculty of Electrical Engineering Czech Technical University 166 27 Prague Czech Republic

Insitute of Plasma Physics Czech Academy of Sciences 182 00 Prague Czech Republic

Institute of Physics Czech Academy of Sciences 182 21 Prague Czech Republic

Institute of Plasma Physics and Laser Microfusion Warsaw Poland

National Research Nuclear University MEPhI Moscow Russian Federation

P N Lebedev Physical Institute of RAS Moscow Russian Federation

Warsaw University of Technology ICS Warsaw Poland

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