A laboratory plasma experiment for studying magnetic dynamics of accretion discs and jets
This work describes a laboratory plasma experiment and initial results which should give insight into the magnetic dynamics of accretion discs and jets. A high-speed multiple-frame CCD camera reveals images of the formation and helical instability of a collimated plasma, similar to MHD models of disc jets, and also plasma detachment associated with spheromak formation, which may have relevance to disc winds and flares. The plasmas are produced by a planar magnetized coaxial gun. The resulting magnetic topology is dependent on the details of magnetic helicity injection, namely the force-free state eigenvalue αgun imposed by the coaxial gun.
© 2002 The Authors. Journal compilation © 2002 RAS. Accepted 2002 February 13. Received 2002 January 30; in original form 2002 January 15. Published Online: 5 August 2002. The authors are grateful to J. Hansen, S. Pracko, C. Romero-Talamas, and F. Cosso for technical assistance. This work was supported by a U.S. Dept. of Energy (US-DoE) Fusion Energy Postdoctoral Fellowship and US-DoE contract no. DE-FG-03-98ER54461.
Published - HSUmnras02.pdf
Accepted Version - 0202380.pdf