Abstract: A method and system to identify an isotope provided in a medium to be characterized by an instrumentation system. The identification method includes: measuring at least one reference spectrum for at least two reference isotopes; defining measurement windows for each reference isotope; measuring a measured spectrum on the medium to be characterized; for each reference isotope, calculating for each of the measurement windows a deviation value representing the deviation between the measured spectrum and that of the reference isotope in the measurement window; for each reference isotope, determining from the calculated deviation values a dissimilarity coefficient; and identifying the isotope from the determined dissimilarity coefficients.

Abstract: A method and system to identify an isotope provided in a medium to be characterized by an instrumentation system. The identification method includes: measuring at least one reference spectrum for at least two reference isotopes; defining measurement windows for each reference isotope; measuring a measured spectrum on the medium to be characterized; for each reference isotope, calculating for each of the measurement windows a deviation value representing the deviation between the measured spectrum and that of the reference isotope in the measurement window; for each reference isotope, determining from the calculated deviation values a dissimilarity coefficient; and identifying the isotope from the determined dissimilarity coefficients.

Abstract: A radiation detecting system, including: plastics scintillators juxtaposed to form at least one pair of contiguous plastics scintillators; a photomultiplier associated with each plastics scintillator to provide an electrical signal representative of the light signal generated in the plastics scintillator; a calculator connected to the photomultipliers and configured to: detect pulse coincidences between two electrical pulses provided by the photomultipliers associated with a pair of contiguous plastics scintillators; for each pulse coincidence, determine the time offset between the coincidence pulses relative to the pulse having the greatest amplitude taken as a zero reference; determine the number of pulse coincidences the time offset of which is included in a time offset window.

Abstract: A system for processing a noisy time signal having a set of pulses of different amplitude and duration, and a method implemented by the system. The system includes a processor processing the signal acquired by a detector to detect the pulses, the processing being configured to perform a derivation of the acquired signal and compare the derived acquired signal with a pulse start detecting threshold to detect a pulse when the derived acquired signal is greater than the threshold. The processor is further configured to dynamically adapt the threshold to the noise level affecting the derived acquired signal.

Abstract: A radiation detecting system, including: plastics scintillators juxtaposed to form at least one pair of contiguous plastics scintillators; a photomultiplier associated with each plastics scintillator to provide an electrical signal representative of the light signal generated in the plastics scintillator; a calculator connected to the photomultipliers and configured to: detect pulse coincidences between two electrical pulses provided by the photomultipliers associated with a pair of contiguous plastics scintillators; for each pulse coincidence, determine the time offset between the coincidence pulses relative to the pulse having the greatest amplitude taken as a zero reference; determine the number of pulse coincidences the time offset of which is included in a time offset window.

Abstract: A signal acquisition and processing method includes a step of acquiring signals in at least two acquisition channels (A1, A2, . . . , AN); a step of detecting the acquired signals in at least two detection channels (V1, V2, . . . , VN) associated respectively with the two acquisition channels; a step of distributing the detected signal or signals that result from the detection step in at least one computing tile available in a set of computing tiles; a step of storing the detected signal or signals in the computing tile or tiles; and a step of processing the signals stored in the computing tile or tiles in order to obtain data characteristic of the detected signals. The method can apply to the acquisition and processing of non-deterministic data (nuclear instrumentation, laser instrumentation, radar detection, etc.).

Abstract: The invention concerns a signal acquisition and processing method, comprising: a step of acquiring signals in at least two acquisition channels (A1, A2, . . . , AN); a step of detecting the acquired signals in at least two detection channels (V1, V2, . . . , VN) associated respectively with the two acquisition channels; a step of distributing the detected signal or signals that result from the detection step in at least one computing tile available in a set of computing tiles; a step of storing the detected signal or signals in the computing tile or tiles; and a step of processing the signals stored in the computing tile or tiles in order to obtain data characteristic of the detected signals. The invention applies to the acquisition and processing of non-deterministic data (nuclear instrumentation, laser instrumentation, radar detection, etc.).

Abstract: The invention concerns a method capable of discriminating between a gamma component and neutron component in an electronic signal (S1) resulting from the detection of gamma and/or neutron radiation, characterized in that it comprises the following steps: delaying by a time TAU and attenuating by a coefficient ALPHA the signal (S1), to obtain a delayed and attenuated signal (S2), subtracting the delayed and attenuated signal (S2) from the electronic signal (S1) to obtain a difference signal (S3) which comprises a gamma component and/or neutron component, and computing a magnitude sigma1 such that: sigma ? ? 1 = ? ? T ? ? 2 ? S 3 ? ( t ) ? ? ? t where ? is an instant when the gamma component passes zero and T2 is a previously determined instant later than instant ? chosen so that, in an interval [?ref, T2], the magnitude sigma1 is negative for a gamma component and positive for a neutron component.