A computer code to calculate the fast induced signals by electron swarms in gases

Autor(es)

Mangiarotti, A. ; Bueno, C. C. ; Vanin, VR

• Tipo de documento: Artigo Científico
• Fonte: XXXIII BRAZILIAN WORKSHOP ON NUCLEAR PHYSICS; v. 1351, p. 6-pg., 2011-01-01.

Resumo

To aid the data analysis of pulsed Townsend experiments, a special code has been developed to calculate the induced pulse by solving the electron continuity equation including growth, drift and diffusion. A realistic profile of the initial laser beam is taken into account as well as the boundary conditions at the cathode and the anode. The approach is either semi-analytic, based on the expression derived by P. H. Purdie and J. Fletcher, or fully numerical, using a finite-difference scheme introduced by J. de Urquijo et al. A new improved scheme is also proposed and compared with the other two methods under typical experimental conditions. A brief discussion on the stability of the numerical procedures is given. The new finite-difference scheme allows a detailed investigation of the importance of back diffusion to the cathode, a subject seldom tackled in the past. (AU)

• Processo FAPESP: 07/50591-4 - Alessio Mangiarotti | Universidade de Coimbra - Portugal
• Beneficiário: Carmen Cecília Bueno
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Internacional
• Processo FAPESP: 09/51809-9 - Alessio Mangiarotti | Universidade de Coimbra - Portugal
• Beneficiário: Carmen Cecília Bueno
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Internacional