INVESTIGADORES
MINOTTI Fernando Oscar
artículos
Título:
Hydrodynamic model for a vacuum arc operated with background gas: Theory and experimental validation
Autor/es:
D. GRONDONA; H. KELLY; F. O. MINOTTI
Revista:
JOURNAL OF APPLIED PHYSICS
Referencias:
Año: 2005 vol. 99 p. 433041 - 433047
ISSN:
0021-8979
Resumen:
A stationary, one-dimensional fluid model is presented to describe the interelectrode region of a nonfiltered vacuum arc operated with a background gas. The model includes the electron energy equation and the main elastic and inelastic atomic processes among metallic ions, electrons, and gas particles. To validate the model predictions an experimental study of the plasma-neutral gas structure, using a titanium (Ti) cathode and argon (Ar) as the background gas, is presented. The measured electron temperature and the experimental dependence on the pressure of neutral Ti and Ar spectroscopic emission lines are well reproduced, using a simple atomic model to interpret the plasma radiation emission