Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Karim Boudergui

Vladimir Kondrasovs

Stéphane Normand

Romain Coulon

Sylvain Magne

Matthieu Hamel

Stephane Normand

Mathieu Thevenin

Gwenole Corre

Hamid Makil

Mounir Bakkali

Guillaume Sannie

Jean-Michel Bourbotte

Chrystele Pittance

Licinio Rocha

Mathieu Trocme

Chrystèle Pittance

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.

Method for identifying an isotope, program for identifying an isotope and device for identifying isotopes

A radiation-detecting device including at least two radiation detectors distributed in series along a support cable, each detector including an optically stimulated luminescence detection element which is optically coupled to at least one optical fiber, each optically stimulated luminescence detection element being held opposite a first end of the optical fiber by a mechanical part fixed to the support cable, the mechanical part being held in a flexible cable by a holding mechanism, second ends of each optical fiber leading to the same first end of the flexible cable.

Device for detecting radiation and associated detection device

The invention relates to a scintillator for detecting neutrons and/or gamma photons, characterized in that it comprises a structure consisting of two undoped plastic materials for detecting neutrons and which contain different fluorescent complexes, a first plastic material containing at least one fluorescent complex able to produce a fluorescence light having a first relaxation time and the second plastic material containing at least one fluorescent complex able to produce a fluorescence light having a second relaxation time higher than the first relaxation time.

Scintillator for detecting neutrons and/or gamma photons and associated detector

A method for detecting a radioactive source moving on a linear path substantially parallel to an alignment of N detectors. The method includes: forming N&#xd7;Npulse counting values M(i=1, 2, . . . , N and t=1, 2, . . . , N) from N&#xd7;Ndetection signals delivered by the N detectors in the form of a succession over time of Nsets of N signals simultaneously detected by the N detectors over a same duration &#x394;t, a pulse counting value representing a number of pulses detected by a detector over a duration &#x394;t; and computing, using a computer: a set of Ncorrelation products R, a static meanof the N&#xd7;Ncounting values, a correlation condition for each correlation product R.

Method for detecting a moving radioactive source and associated device

A method for processing electrical signals from a phoswich scintillator including an upstream scintillator and a downstream scintillator, the method including, for each electrical signal: digitization of the electrical signal; determination of an amplitude and an integral surface area of the digitized electrical signal; and representation of an event associated with an electrical signal by a pair of data items.

Method for processing a signal from a phoswich scintillator, and associated scintillation detector

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Nogent-le-Phaye, France

Karim Boudergui