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Plastic scintillator for pulse shape neutrons and gamma quanta discrimination

Authors
Journal
Radiation Measurements
1350-4487
Publisher
Elsevier
Volume
62
Identifiers
DOI: 10.1016/j.radmeas.2013.12.013
Keywords
  • Plastic Scintillators
  • Neutron Registration
  • Pulse Shape Discrimination
  • Triplet States
  • Luminescent Additives
  • Polystyrene
  • Eu-Complex

Abstract

Abstract This study describes a new plastic scintillator for pulse shape n-γ discrimination. The scintillator contains two activation centers with different life spans. The first activator collects the singlet excitation energy of a polymer base, and the second activator utilizes triplet excitation states. We utilized 1,4-dimethyl-9,10-diphenylanthracene (DMDPA) and tris(dibenzoylmethide) (1,10-phenanthroline)Europium(III) (Eu[DBM]3Phen) as activators. The figure of merit for this scintillator is 1.37, which is sufficient for reliable n-γ discrimination.

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