%0 Conference Proceedings %T Study and understanding of n/γ discrimination processes in organic plastic scintillators %+ Laboratoire Capteurs et Architectures Electroniques (LCAE) %+ Laboratoire de Photophysique et Photochimie Supramoléculaires et Macromoléculaires (PPSM) %A Hamel, Matthieu %A Blanc, Pauline %A Rocha, Licinio %A Normand, Stéphane %A Pansu, R. %Z Conference of Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XIV ; Conference Date: 30 April 2013 Through 3 May 2013; Conference Code:98144 %< avec comité de lecture %( Society of Photo-Optical Instrumentation Engineers (SPIE) %B Proc. SPIE 8710, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XIV %C Baltimore, MD, United States %Y Augustus Way Fountain %V 8710 %P 87101F %8 2013-04-30 %D 2013 %R 10.1117/12.2011330 %K Chemical preparation %K Fast neutrons %K Helium-3 %K Home land security %K Liquid scintillator %K Plastic scintillator %K Pulse shape discrimination %K Triplet-triplet annihilation %K Explosives %K Fluorescence %K Ionization %K Neutrons %K Radioactivity, ionizing radiation %K Scintillation counters %K instrumentation, nuclear instrumentation, neutrons, detector, Neutron-gamma discrimination %Z Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] %Z Physics [physics]/Nuclear Experiment [nucl-ex]Conference papers %X For 50 years, it was assumed that unlike liquid scintillators or organic crystals, plastic scintillators were not able to discriminate fast neutrons from gamma. In this work, we will demonstrate that triplet-triplet annihilations (which are responsible of n/γ discrimination) can occur even in plastic scintillators, following certain conditions. Thus, the presentation will deal with the chemical preparation, the characterization and the comparison of n/γ pulse shape discrimination of various plastic scintillators. To this aim, scale-up of the process allowed us to prepare a Ø 100 mm × ≈ 110 mm thick. %G English %L cea-01823913 %U https://cea.hal.science/cea-01823913 %~ CEA %~ CNRS %~ ENS-CACHAN %~ DRT %~ INC-CNRS %~ LIST %~ DM2I %~ PPSM-AUTO %~ ENS-PARIS-SACLAY %~ PPSM %~ GS-PHYSIQUE %~ DIN