We report on experiments in which magnetically driven radiatively cooled plasma jets were produced by a 1 MA, 250 ns current pulse on the MAGPIE pulsed power facility. The jets were driven by the pressure of a toroidal magnetic field in a "magnetic tower" jet configuration. This scenario is characterized by the formation of a magnetically collimated plasma jet on the axis of a magnetic "bubble", confined by the ambient medium. The use of a radial metallic foil instead of the radial wire arrays employed in our previous work allows for the generation of episodic magnetic tower outflows which emerge periodically on timescales of 30 ns. The subsequent magnetic bubbles propagate with velocities reaching 300 km/s and interact with previous eruptions leading to the formation of shocks.
Formation of episodic magnetically driven radiatively cooled plasma jets in the laboratory / Suzuki Vidal, F; Lebedev, S. V.; Ciardi, A.; Bland, S. N.; Chittenden, J. P.; Hall, G. N.; Harvey Thompson, A.; Marocchino, Alberto; Ning, C.; Stehle, C.; Frank, A.; Blackman, E. G.; Bott, S. C.; Ray, T.. - In: ASTROPHYSICS AND SPACE SCIENCE. - ISSN 0004-640X. - 322:1-4(2009), pp. 19-23. [10.1007/s10509-009-9981-1]
Formation of episodic magnetically driven radiatively cooled plasma jets in the laboratory
MAROCCHINO, ALBERTO;
2009
Abstract
We report on experiments in which magnetically driven radiatively cooled plasma jets were produced by a 1 MA, 250 ns current pulse on the MAGPIE pulsed power facility. The jets were driven by the pressure of a toroidal magnetic field in a "magnetic tower" jet configuration. This scenario is characterized by the formation of a magnetically collimated plasma jet on the axis of a magnetic "bubble", confined by the ambient medium. The use of a radial metallic foil instead of the radial wire arrays employed in our previous work allows for the generation of episodic magnetic tower outflows which emerge periodically on timescales of 30 ns. The subsequent magnetic bubbles propagate with velocities reaching 300 km/s and interact with previous eruptions leading to the formation of shocks.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
