Electrostatic force between rings and discs of charge inside a grounded metallic pipe using the Green's function technique

Autor(es)

Lopes, Daniel T. ^[1] ; Motta, Claudio C. ^[2]

Afiliação do(s) autor(es)

^[1] IPEN, Sao Paulo - Brazil

^[2] Univ Sao Paulo, BR-05508000 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ELECTROSTATICS; v. 70, n. 1, p. 166-173, FEB 2012.
• Citações Web of Science: 0

Resumo

We derive analytic formulae for the electrostatic force between ring and disc charge distributions inside a grounded metallic pipe using the Green's function technique. These distribution models are useful in the modeling of electron beams commonly employed in microwave tubes. We analyze the electric force between two discs, between two rings, and between a disc and a ring and we compare the results for the electric potential, field, and force to numerical ones obtained from a 3D electrostatic solver. Present expressions were developed to avoid an oscillatory noise when the field diverges by axial proximity between source and observer. (C) 2011 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 08/05286-1 - Análise multitonal e caracterização experimental de válvulas de ondas progressivas (TWT) para emprego em amplificadores de microondas (TWA)
• Beneficiário: Daniel Teixeira Lopes
• Modalidade de apoio: Bolsas no Brasil - Doutorado