Spatial charge effects in retarding field analyzer ion measurements in a cathodic vacuum arc

The ion energy distribution (IED) obtained from a cathodic vacuum arc using a retarding field analyzer (RFA) was investigated. The spatial charge effects in the grid-collector region of the analyzer were taken into account in the RFA ion measurements. It was found that there was a decrement of colle...

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Detalles Bibliográficos
Autores principales: Grondona, D., Kelly, H., Márquez, A.
Formato: JOUR
Materias:
Electric charge
Electric potential
Impact ionization
Ions
Kinetic energy
Plasma density
Poisson equation
Secondary emission
Cathodic vacuum arcs
Retarding field analyzers (RFA)
Electric arcs
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00036951_v79_n3_p317_Grondona
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:The ion energy distribution (IED) obtained from a cathodic vacuum arc using a retarding field analyzer (RFA) was investigated. The spatial charge effects in the grid-collector region of the analyzer were taken into account in the RFA ion measurements. It was found that there was a decrement of collector current for unexpected collector bias voltage values. Spatial charge effects were found to be more marked when the arc operated with gas filling due to creation of low energy gaseous ions.

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