Dosimétrie passive des neutrons rapides au moyen des diodes de silicium
F. SPURNY, R. MEDIONI, L. PLAWINSKI, Q. CHAU
Radioprotection 2000 Vol. 35, n° 1, p 21-29, in French
Fast neutrons passive dosimetry with Si - diodes.
Since several years, Si-diodes have been used for the fast neutron dosimetry in the case of high level exposure, accidental enclosed. This work describes the results of tests performed with the diodes of a new production, presents their characteristics and the analysis of the possibilities of their use. The diodes of two different sensitivities were irradiated at the SILENE reactor (irsn Valduc). We studied: the reproducibility of reading and the influence of its repetition, the homogeneity of the lot of diodes studied, the evolution of the signal with the time after irradiation, the influence of the thermal treatment on this evolution, the response of two types of diodes to the neutrons of SILENE reactor in two configurations, the detection threshold expressed in tissue kerma. The results obtained are presented, analysed and discussed. The principal knowledge is formulated in the conclusion.