Speaker
Description
We will present overview of plasma modeling and experiments related to vacuum arc devices. The character of the plasma flow depending on the anode geometries relatively to the expanding plasma jet will be analyzed. Specifics of the high-current vacuum arc will be examined including several effects associated with high-current arc behavior in a magnetic field and transition from diffusion to constricted arc. Specifically we will address phenomena relevant for vacuum arc circuit breakers such as behavior of the vacuum arc in a magnetic field, V-shape of the arc voltage in an axial magnetic field, near anode phenomena etc. In addition we will discuss breakdown process in the case of a micro-vacuum arc device. This includes effects of insulator material, cathode material deposition and cyclic nature of insulation of the inter electrode layer.
| session | Applications - materials and devices |
|---|---|
| Type of contribution | Oral |
