title: Astrophysics of magnetically collimated jets generated from laser-produced plasmas.
abstract: The generation of astrophysically relevant jets, from magnetically collimated, laser-produced plasmas, is investigated through three-dimensional, magnetohydrodynamic 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 the plasma plume into a prolate cavity bounded by a shock envelope with a standing conical shock at its tip, which recollimates the flow into a supermagnetosonic jet beam. This mechanism is equivalent to astrophysical models of hydrodynamic inertial collimation, where an isotropic wind is focused into a jet by a confining circumstellar toruslike envelope. The results suggest an alternative mechanism for a large-scale magnetic field to produce jets from wide-angle winds.
authors: LERMA, Observatoire de Paris, Université Pierre et Marie Curie, École Normale Superieure, UMR 8112 CNRS, 5 Place Jules Jannsen, 92195 Meudon, France.
authors: A
authors: A
authors: Ciardi
authors: T
authors: T
authors: Vinci
authors: J
authors: J
authors: Fuchs
authors: B
authors: B
authors: Albertazzi
authors: C
authors: C
authors: Riconda
authors: H
authors: H
authors: Pépin
authors: O
authors: O
authors: Portugall