Breakdown phenomena in SPEED 1
Abstract
In the fast high voltage focus SPEED 1, very thin current sheaths of high electrical conductivity were generated, and parameters for the sheath formation and the strong interrelation of breakdown and pinch phase were found. Fast high voltage breakdown homogenizes the formation of the current sheath. High ignition voltage favors the concentration of electrons on the insulator surface prior to breakdown leading to the formation of thin current sheaths close to the insulator. High rate of change of current during breakdown reduces the thickness of the generated sheath. Thin current sheaths and high absolute current level lead to high sheath current densities and thus high sheath conductivities.
- Publication:
-
Plasma Focus Research
- Pub Date:
- September 1983
- Bibcode:
- 1983pfr..work...79D
- Keywords:
-
- Parameter Identification;
- Plasma Diagnostics;
- Plasma Focus;
- Plasma Pinch;
- Current Density;
- High Voltages;
- Plasma Conductivity;
- Plasma Sheaths;
- Plasma Physics