The generation of astrophysically relevant jets, from magneticallycollimated, laser-produced plasmas, is investigated through three-dimensional,magneto-hydrodynamic simulations. We show that for laser intensities I ~ 10^12- 10^14 W/cm^2, a magnetic field in excess of ~ 0.1 MG, can collimate theplasma plume into a prolate cavity bounded by a shock envelope with a standingconical shock at its tip, which re-collimates the flow into a supermagneto-sonic jet beam. This mechanism is equivalent to astrophysical models ofhydrodynamic inertial collimation, where an isotropic wind is focused into ajet by a confining circumstellar torus-like envelope. The results suggest analternative mechanism for a large-scale magnetic field to produce jets fromwide-angle winds. (abridged version)
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机译：通过三维磁磁流体动力学模拟研究了磁准直的激光产生等离子体产生的天体相关射流。我们表明，对于激光强度I〜10 ^ 12- 10 ^ 14 W / cm ^ 2，超过〜0.1 MG的磁场可以将血浆羽准直到扁圆形的空腔中，该扁圆形的空腔被冲击包膜所包围，并在其圆锥形处形成圆锥形冲击。尖端，将流重新准直成超电磁速射流。这种机制等效于流体动力学惯性准直的天体物理模型，在该模型中，各向同性的风通过局限的星状圆环状包络线聚焦到喷气机中。结果表明，大磁场产生广角风射流的另一种机制。 （删节版）
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