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Abstract:

A pulse-forming network is added in the discharge circuit of a cold-cathode electron gun that gives rise to an improved shape of the pulse, making it closer to the ideal square pulse needed for optimal energy deposition in material surface treatments. It is shown that the circuit can be very accurately designed by means of simulations using empirical equations for the nonlinear response of the gun. Due to the particular nonlinear behavior of the current-voltage in these guns, and the strong nonlinear self-focusing of the beam, the adequate shaping of the temporal profile of the discharge becomes relevant to the efficiency of the system. The effect of using a new discharge circuit for a glow-discharge pulsed electron gun for materials processing is analyzed, showing an almost two-fold improvement in the efficiency of the system regarding the fraction of the energy not wasted in long pulse tails.

Registro:

Documento: Artículo
Título:Pulse shaping for optimal energy deposition with a cold cathode electron gun for surface treatment
Autor:Dobrusin, P.D.; Mingolo, N.; Martínez, O.E.
Filiación:Departamento de Física, Facultad de Ingeniería, Universidad de Buenos Aires, 1063 Buenos Aires, Argentina
Departamento de Física, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Palabras clave:Electron gun; Glow discharge; Pulse shaping; Surface treatment; Cold cathode tubes; Computer simulation; Glow discharges; Pulse shaping circuits; Surface treatment; Energy deposition; Electron guns
Año:2003
Volumen:31
Número:4 I
Página de inicio:771
Página de fin:775
DOI: http://dx.doi.org/10.1109/TPS.2003.815478
Título revista:IEEE Transactions on Plasma Science
Título revista abreviado:IEEE Trans Plasma Sci
ISSN:00933813
CODEN:ITPSB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00933813_v31_n4I_p771_Dobrusin

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Citas:

---------- APA ----------
Dobrusin, P.D., Mingolo, N. & Martínez, O.E. (2003) . Pulse shaping for optimal energy deposition with a cold cathode electron gun for surface treatment. IEEE Transactions on Plasma Science, 31(4 I), 771-775.
http://dx.doi.org/10.1109/TPS.2003.815478
---------- CHICAGO ----------
Dobrusin, P.D., Mingolo, N., Martínez, O.E. "Pulse shaping for optimal energy deposition with a cold cathode electron gun for surface treatment" . IEEE Transactions on Plasma Science 31, no. 4 I (2003) : 771-775.
http://dx.doi.org/10.1109/TPS.2003.815478
---------- MLA ----------
Dobrusin, P.D., Mingolo, N., Martínez, O.E. "Pulse shaping for optimal energy deposition with a cold cathode electron gun for surface treatment" . IEEE Transactions on Plasma Science, vol. 31, no. 4 I, 2003, pp. 771-775.
http://dx.doi.org/10.1109/TPS.2003.815478
---------- VANCOUVER ----------
Dobrusin, P.D., Mingolo, N., Martínez, O.E. Pulse shaping for optimal energy deposition with a cold cathode electron gun for surface treatment. IEEE Trans Plasma Sci. 2003;31(4 I):771-775.
http://dx.doi.org/10.1109/TPS.2003.815478