Electronic circuits associated to radiation detectors

This work deals with electronic circuits associated to radiation detectors. In the first part are described the different detectors used and the way the electronic pulses are treated. Then are given the mistakes sources which are the electronic noise, the thermal drifts, the electromagnetic disturbances, the stacking effects of counting rates and the input current form variation effect. In the second part are treated the energy optimal estimation and the counting optimization. In the third part are described the measure chains associated to detectors and more particularly the counting, the weak currents measure and the energy measures. (O.L.). 32 figs