Enhanced processing circuit for spectrometry system and spectrometry system using same

摘要

The invention concerns a spectrometry system processing circuit comprising a particulate radiation detector ( 21 ), including a charge preamplifying stage ( 20 ) receiving a current (I 1 ) from the sensor representing an amount of charges emitted by a particle which has interacted with the detector, and an integrator stage ( 26 ). A shunt stage ( 25 ) is connected between the charge preamplifying stage ( 20 ) and the integrator stage ( 26 ), the shunt stage ( 25 ) receiving a signal (V 1 ) derived from the charge preamplifying stage ( 20 ) and delivering to the integrating stage ( 26 ) an image signal (V 2 ) of the sensing current (I 1 ), the integrator stage ( 26 ) delivering an image (V 3 ) of the amount of charges emitted by a particle having interacted with the detector. The invention is applicable in particular to high-energy single-channel probes.