Fig. 1 | Nature Communications

Fig. 1

From: Supersonic plasma turbulence in the laboratory

Fig. 1

Experimental configuration and magnetic-field fluctuations. a Experimental configuration. Two counter-propagating supersonic jets are launched by means of optical-laser ablation of thin fluorinated plastic foils separated by 4 cm. Each foil is irradiated by three frequency-doubled (527-nm-wavelength) lasers, each carrying 130 ± 20 J of energy in a 2 ns pulse. The jets are passed through two misaligned plastic grids and collide, forming a central region of supersonic turbulence. Magnetic fluctuations, created as the magnetic field imposed by external permanent magnets (gray dashed lines) is advected by the flow, are measured with an induction coil and used to deduce velocity fluctuations. b Temporal evolution of the y-component (vertical in the top panel) of the magnetic field, as measured by the induction loop. The shaded regions represent the intervals over which the FFT was performed in calculating the magnetic-field power spectra

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