MANGIAROTTI, A.BUENO, C.C.VANIN, VITO R.2014-11-172014-11-182015-04-022014-11-172014-11-182015-04-02MANGIAROTTI, A.; BUENO, C.C. A computer code to calculate then fast induced signals by electron swarms in gases. In: VANIN, VITO R. (ed.). In: BRAZILIAN WORKSHOP ON NUCLEAR PHYSICS, 32rd, September 7-11, 2010, Campos do Jordão, SP. <b>Proceedings...</b> p. 189-194. Disponível em: http://repositorio.ipen.br/handle/123456789/18038.http://repositorio.ipen.br/handle/123456789/18038To 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 finitedifference 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.189-194openAccessanodesboundary conditionscathodescomputer codescontinuity equationsdata analysisdiffusionelectron driftelectron-atom collisionselectronsfinite difference methodgaseslaser radiationtownsend dischargeTexto completo de evento10.1063/1.3608955https://orcid.org/0000-0001-7881-7254