Measurement of the current density profile of a pulsed electron beam for surface treatment

The current-density profile is a critical information when predicting or analyzing material surface treatment with electron beams. In this paper, a knife-edge technique was implemented in order to retrieve such profile for a pulsed-glow-discharge electron gun used for metal surface treatment. It was...

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Autores principales: Belçaguy, P.M., Mingolo, N., Martínez, O.E.
Formato: JOUR
Materias:
Beam profile
Electron gun
Glow discharge
Surface treatment
Current density
Electron guns
Glow discharges
Electron beams
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00933813_v31_n4I_p788_Belcaguy
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00933813_v31_n4I_p788_Belcaguy
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spelling todo:paper_00933813_v31_n4I_p788_Belcaguy2023-10-03T14:55:32Z Measurement of the current density profile of a pulsed electron beam for surface treatment Belçaguy, P.M. Mingolo, N. Martínez, O.E. Beam profile Electron gun Glow discharge Surface treatment Current density Electron guns Glow discharges Surface treatment Beam profile Electron beams The current-density profile is a critical information when predicting or analyzing material surface treatment with electron beams. In this paper, a knife-edge technique was implemented in order to retrieve such profile for a pulsed-glow-discharge electron gun used for metal surface treatment. It was found that the beam has basically two components, one that is focused, and another that remains unfocused (homogeneous). The focused portion develops after the peak current is reached and remains focused for longer periods than predicted by previous models. The obtained profiles where used to determine the energy density (fluence) delivered to the target in order to understand the different patterns obtained for SAE4140 steel samples. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00933813_v31_n4I_p788_Belcaguy
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Beam profile
Electron gun
Glow discharge
Surface treatment
Current density
Electron guns
Glow discharges
Surface treatment
Beam profile
Electron beams
spellingShingle Beam profile
Electron gun
Glow discharge
Surface treatment
Current density
Electron guns
Glow discharges
Surface treatment
Beam profile
Electron beams
Belçaguy, P.M.
Mingolo, N.
Martínez, O.E.
Measurement of the current density profile of a pulsed electron beam for surface treatment
topic_facet Beam profile
Electron gun
Glow discharge
Surface treatment
Current density
Electron guns
Glow discharges
Surface treatment
Beam profile
Electron beams
description The current-density profile is a critical information when predicting or analyzing material surface treatment with electron beams. In this paper, a knife-edge technique was implemented in order to retrieve such profile for a pulsed-glow-discharge electron gun used for metal surface treatment. It was found that the beam has basically two components, one that is focused, and another that remains unfocused (homogeneous). The focused portion develops after the peak current is reached and remains focused for longer periods than predicted by previous models. The obtained profiles where used to determine the energy density (fluence) delivered to the target in order to understand the different patterns obtained for SAE4140 steel samples.
format JOUR
author Belçaguy, P.M.
Mingolo, N.
Martínez, O.E.
author_facet Belçaguy, P.M.
Mingolo, N.
Martínez, O.E.
author_sort Belçaguy, P.M.
title Measurement of the current density profile of a pulsed electron beam for surface treatment
title_short Measurement of the current density profile of a pulsed electron beam for surface treatment
title_full Measurement of the current density profile of a pulsed electron beam for surface treatment
title_fullStr Measurement of the current density profile of a pulsed electron beam for surface treatment
title_full_unstemmed Measurement of the current density profile of a pulsed electron beam for surface treatment
title_sort measurement of the current density profile of a pulsed electron beam for surface treatment
url http://hdl.handle.net/20.500.12110/paper_00933813_v31_n4I_p788_Belcaguy
work_keys_str_mv AT belcaguypm measurementofthecurrentdensityprofileofapulsedelectronbeamforsurfacetreatment
AT mingolon measurementofthecurrentdensityprofileofapulsedelectronbeamforsurfacetreatment
AT martinezoe measurementofthecurrentdensityprofileofapulsedelectronbeamforsurfacetreatment
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