Title :
Snowplow modeling of a long-conduction-time plasma opening switch
Author :
Lisitsyn, I.V. ; Teramoto, Y. ; Kohno, S. ; Katsuki, S. ; Akiyama, H.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Kumamoto Univ., Japan
Abstract :
The modified snowplow model of a plasma opening switch is proposed. The conduction phase is divided into two parts. The first part lasts until the current-carrying channel reaches the load end of the pre-filled plasma. The second part, the transition phase to the opening, is characterized by the motion of current carrying channel downstream the initial plasma location. The equation of motion of the current channel is solved for both phases and the snowplow mechanism for high-voltage pulse generation is developed. The theoretical dependencies are in good agreement with the experiment, which includes interferometry and optical fiber measurements of current front translation. The qualitative model of the switch plasma behavior is proposed and used in explanations of various plasma opening switch features.
Keywords :
electric current measurement; fibre optic sensors; light interferometry; plasma density; plasma diagnostics; plasma switches; pulse generators; pulsed power supplies; pulsed power switches; conduction phase; current channel; current front translation; current-carrying channel; equation of motion; high-voltage pulse generation; initial plasma location; interferometry; load end; long-conduction-time plasma opening switch; optical fiber measurements; plasma density; pre-filled plasma; qualitative model; snowplow modeling; switch plasma behavior; Acceleration; Equations; Hydrodynamics; Magnetic fields; Optical switches; Plasma accelerators; Plasma density; Plasma diagnostics; Plasma measurements; Plasma waves;
Conference_Titel :
Pulsed Power Conference, 1999. Digest of Technical Papers. 12th IEEE International
Conference_Location :
Monterey, CA, USA
Print_ISBN :
0-7803-5498-2
DOI :
10.1109/PPC.1999.823640
