Title :
Forming of high-speed radial plasma flow due to its heating by induced azimuthal current in electrical explosion of wires in extra-high magnetic field
Author :
Adamyan, Yu.E. ; Vasilevsky, V.M. ; Kolgatin, S.N. ; Shneerson, G.A.
Author_Institution :
St. Petersburg State Tech. Univ., Russia
fDate :
6/20/1905 12:00:00 AM
Abstract :
Experiments on wire explosions in strong longitudinal magnetic fields have shown that the electrical characteristics of conductor explosions are affected by the field. The presence of a longitudinal field with the induction 50-70 T shifts the moment of the explosion and changes the qualitative dependency of voltage vs. time. Previously the possibility of essential heating and acceleration of plasma caused by the generation of azimuthal currents at electrical explosion in longitudinal magnetic field has been shown. Here a one-dimensional analytic plane model illustrating the possibility and explaining the effects of acceleration and conducting media heating under its expansion across the given external field is discussed. Also the description of the experiments is presented in which this effect at the expansion of the low density gas area forming around the wire during its electrical explosion in the vacuum was observed
Keywords :
exploding wires; plasma flow; plasma heating; plasma magnetohydrodynamics; 50 to 70 T; conducting media heating; conductor explosions; electrical explosion; extra-high magnetic field; heating; high-speed radial plasma flow; induced azimuthal current; low density gas; strong longitudinal magnetic fields; wire explosions; wires; Acceleration; Conductors; Electric variables; Explosions; Heating; Magnetic fields; Plasma accelerators; Plasma properties; Voltage; Wire;
Conference_Titel :
High-Power Particle Beams, 1998. BEAMS '98. Proceedings of the 12th International Conference on
Conference_Location :
Haifa
Print_ISBN :
0-7803-4287-9
DOI :
10.1109/BEAMS.1998.822447