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

Stephane Normand

Matthieu Hamel

Vladimir Kondrasovs

Karim Boudergui

Gwenole Corre

Guillaume Sannie

Gregory Turk

Pauline Blanc

Chrystele Dehe-Pittance

Chrystele Pittance

Licinio Rocha

Mathieu Trocme

Jean-michel Bourbotte

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.

System and method for detecting neutron, gamma and muon radiations with contiguous plastics scintillators

The invention relates to a solid organic scintillator comprising a polymeric matrix in which there are dispersed one or more fluorophore compounds and one or more chemical elements having an atomic number ranging from 40 to 83, characterized in that said scintillator has a weight content of said chemical elements of at least 5% by weight relative to the total weight of the scintillator, and in that the scintillator emits an emission spectrum comprising an emission peak at a wavelength of at least 550 nm.

Solid organic scintillator doped by one or more chemical elements

A plastic scintillator material, a plastic scintillator prepared by shaping the material, a detection portal, and a method for discrimination a signal due to fast neutrons. The plastic scintillator material including a polymeric matrix into which is incorporated at least one fluorescent compound at a mass concentration greater than or equal to 10% by mass of the total mass of the material. The polymeric matrix comprises a crosslinked polymer obtainable by polymerization of a mixture comprising at least one aromatic monomer and at least one monomer which is a crosslinking agent selected from the group consisting of an alkyl diacrylate, an alkyl dimethacrylate, and a mixture thereof, and molar proportions of the crosslinking monomer and of the aromatic monomer in the mixture are from 10% to 50% and from 90% to 50%, respectively.

Plastic scintillator materials, plastic scintillators comprising such materials and method for distinguishing neutrons from gamma rays using said scintillators

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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Isigny le Buat, France

Stephane Normand