Numerical modeling of materials processing applications of a pulsed cold cathode electron gun

A numerical study of the application of a pulsed cold cathode electron gun to materials processing is performed. A simple semiempirical model of the discharge is used, together with backscattering and energy deposition profiles obtained by a Monte Carlo technique, in order to evaluate the energy sou...

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Publicado: 1998
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00218979_v83_n7_p3856_Etcheverry
http://hdl.handle.net/20.500.12110/paper_00218979_v83_n7_p3856_Etcheverry
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00218979_v83_n7_p3856_Etcheverry
record_format dspace
spelling paper:paper_00218979_v83_n7_p3856_Etcheverry2023-06-08T14:42:53Z Numerical modeling of materials processing applications of a pulsed cold cathode electron gun A numerical study of the application of a pulsed cold cathode electron gun to materials processing is performed. A simple semiempirical model of the discharge is used, together with backscattering and energy deposition profiles obtained by a Monte Carlo technique, in order to evaluate the energy source term inside the material. The numerical computation of the heat equation with the calculated source term is performed in order to obtain useful information on melting and vaporization thresholds, melted radius and depth, and on the dependence of these variables on processing parameters such as operating pressure, initial voltage of the discharge and cathode-sample distance. Numerical results for stainless steel are presented, which demonstrate the need for several modifications of the experimental design in order to achieve a better efficiency. © 1998 American Institute of Physics. 1998 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00218979_v83_n7_p3856_Etcheverry http://hdl.handle.net/20.500.12110/paper_00218979_v83_n7_p3856_Etcheverry
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description A numerical study of the application of a pulsed cold cathode electron gun to materials processing is performed. A simple semiempirical model of the discharge is used, together with backscattering and energy deposition profiles obtained by a Monte Carlo technique, in order to evaluate the energy source term inside the material. The numerical computation of the heat equation with the calculated source term is performed in order to obtain useful information on melting and vaporization thresholds, melted radius and depth, and on the dependence of these variables on processing parameters such as operating pressure, initial voltage of the discharge and cathode-sample distance. Numerical results for stainless steel are presented, which demonstrate the need for several modifications of the experimental design in order to achieve a better efficiency. © 1998 American Institute of Physics.
title Numerical modeling of materials processing applications of a pulsed cold cathode electron gun
spellingShingle Numerical modeling of materials processing applications of a pulsed cold cathode electron gun
title_short Numerical modeling of materials processing applications of a pulsed cold cathode electron gun
title_full Numerical modeling of materials processing applications of a pulsed cold cathode electron gun
title_fullStr Numerical modeling of materials processing applications of a pulsed cold cathode electron gun
title_full_unstemmed Numerical modeling of materials processing applications of a pulsed cold cathode electron gun
title_sort numerical modeling of materials processing applications of a pulsed cold cathode electron gun
publishDate 1998
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00218979_v83_n7_p3856_Etcheverry
http://hdl.handle.net/20.500.12110/paper_00218979_v83_n7_p3856_Etcheverry
_version_ 1768546705521770496

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