Figure2 (IMAGE) Osaka University Caption Perspective views of the normalized ion density ni/ni0 and the z-component of the magnetic field Bz, respectively, observed at t∼200 fs, which is obtained by a 3D EPOCH simulation. A cubic aluminum target with a size of 14 μm × 14 μm × 14 μm is set at the center, which has a cylindrical cavity with a radius of R0 = 5 μm and an axis overlapping the z-axis. The seed magnetic field B0 = 6 kT parallel to the z-axis is uniformly set over the entire domain. The four faces of the target parallel to the z-axis are normally irradiated by uniform laser pulses simultaneously, which are characterized by λL = 0.8 μm, IL =3×10^21 Wcm^−2 and τL =50fs. Credit © 2021 Masakatsu Murakami et al., High Power Laser Science and Engineering Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.