INVESTIGADORES
MARQUEZ Adriana Beatriz
artículos
Título:
Kinetic model for the evaluation of spatial charge effects in retarding field analyzers applied to vacuum arc devices
Autor/es:
H. KELLY; F. MINOTTI; D. GRONDONA; A. MÁRQUEZ
Revista:
MEASUREMENT SCIENCE & TECHNOLOGY (PRINT)
Editorial:
IOP
Referencias:
Año: 2002 vol. 13 p. 623 - 630
ISSN:
0957-0233
Resumen:
We develop a kinetic formalism to determine the charge spatial distribution
and the self-consistent electrostatic potential in the gridcollector region of a
retarding field analyser system applied to vacuum arc devices. This work is
the natural extension of a previous work where a uniform spatial distribution
of charge was assumed to explain certain anomalies arising in measurements
of vacuum arc ion energy distributions, if charge effects were not included.
We compare different approaches (no charge effects, spatially uniform
charge density and kinetic treatment) which can be used to find the ion
energy distribution in vacuum arcs. We show that under conditions usually
met in these devices it is necessary to use the kinetic approach for the correct
interpretation of measurements employing retarding field analysers.