Author/Authors :
Hamrita، نويسنده , , H. and Pârlog، نويسنده , , M. and Borderie، نويسنده , , B. and Lavergne، نويسنده , , L. and Le Neindre، نويسنده , , N. and Rivet، نويسنده , , M.F. and Barbey، نويسنده , , S. and Bougault، نويسنده , , R. and Chabot، نويسنده , , M. and Chbihi، نويسنده , , A. and Cussol، نويسنده , , D. and de Oliveira Santos، نويسنده , , F. and Edelbruck، نويسنده , , P. and Frankland، نويسنده , , J.D. and Galichet، نويسنده , , E. ، نويسنده ,
Abstract :
Current pulses induced in a silicon detector by 10 different heavy ion species at known energies around 10 A MeV have been sampled in time at high frequency. Their individual average shapes are quite well reproduced by a fit procedure based on our recent charge carrier collection treatment which considers the progressive extraction of the electrons and holes from the high carrier density zone along the ionizing particle track. This region is assumed to present a supplementary dielectric polarization and consequently a disturbed electric field. The influence of the nature of the heavy ion on the values of the three fit parameters is analyzed.
Keywords :
Pulse shape analysis , Silicon detectors , Current pulse , Dielectric Permittivity , Carrier pair dissociation
