Evaluating the dielectric strength of helium-nitrogen gas mixtures by plasma parameter measurements
Abstract
Plasma diagnostic experiments are used for understanding the dielectric strength of gaseous cooling media. Plasma measurements on helium-nitrogen gas mixtures with varying composition were conducted with a single-tip Langmuir probe. The data from the measurements were used to derive the electron temperature and electron density. The results suggest that the measured electron temperature is suitable for assessing the dielectric strength variation of the gaseous media as a function of gas composition. However, the results also confirmed that the measured electron density is substantially influenced by the effective wall area of the plasma chamber and thus is inappropriate for being used as the indicator of dielectric strength variation.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 01, 2018
- Source ID
- 10.1063/1.5023057
Entities
People
- Chanyeop Park
- Lukas Graber
- Sastry Pamidi
Organizations
- Florida State University
- Georgia Tech
- Office of Naval Research