Currently, pulse shape discrimination (PSD) is the most effective way of gamma rejection in liquid organic plastic scintillators, however low luminosity for neutron scatter events and restricted volume required for nanosecond timing, limit the sensitivity of PSD plastic scintillators.
The composition consists of a low cost polymer base, doped with an independently variable fluorescent and triplet-harvesting compounds. The incorporation of triplet-harvesting dopants into the material creates physical properties that are fundamentally different from those of existing organic plastic scintillators. Advantages of these new properties include improved luminosities, tunable pulse shapes, and superior scintillation timing characteristics. It also reduces the radiative lifetime of triplet excited states through spin orbit coupling, enables sub-microsecond radiative decay, and eliminates the need for hazardous liquid plastic scintillators.