PLASTIC SCINTILLATOR MATERIALS, PLASTIC SCINTILLATORS COMPRISING SUCH MATERIALS AND METHOD FOR DISTINGUISHING NEUTRONS FROM GAMMA RAYS USING SAID SCINTILLATORS

摘要

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.