High Mach-number collisionless shock driven by a laser with an external magnetic field
1 Institute of Laser Engineering, Osaka University, Japan
2 Graduate School of Engineering, Osaka University, Japan
3 Graduate School of Science, Osaka University, Japan
4 Institute for Laser Science, University of Electro-communications, Japan
5 Interdisciplinary Graduate School of Engineering Sciences Kyushu University, Japan
6 LULI, École Polytechnique, CNRS, CEA, UPMC, France
7 Institute of Physics, Chinese Academy of Sciences Institute of Physics, Chinese Academy of Sciences , China
8 Department of Physics, University of Oxford, UK
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Published online: 15 November 2013
Collisionless shocks are produced in counter-streaming plasmas with an external magnetic field. The shocks are generated due to an electrostatic field generated in counter-streaming laser-irradiated plasmas, as reported previously in a series of experiments without an external magnetic field [T. Morita et al., Phys. Plasmas, 17, 122702 (2010), Kuramitsu et al., Phys. Rev. Lett., 106, 175002 (2011)] via laser-irradiation of a double-CH-foil target. A magnetic field is applied to the region between two foils by putting an electro-magnet (∼10 T) perpendicular to the direction of plasma expansion. The generated shocks show different characteristics later in time (t > 20ns).
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