| Full text | |
| Author(s): |
Mangiarotti, A.
;
Bueno, C. C.
;
Vanin, VR
Total Authors: 3
|
| Document type: | Journal article |
| Source: | XXXIII BRAZILIAN WORKSHOP ON NUCLEAR PHYSICS; v. 1351, p. 6-pg., 2011-01-01. |
| Abstract | |
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) | |
| FAPESP's process: | 07/50591-4 - Alessio Mangiarotti | University of Coimbra - Portugal |
| Grantee: | Carmen Cecília Bueno |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - International |