PULSE SHAPE DISCRIMINATION
EJ-276 & EJ-276G
(Formerly EJ-299-33A, EJ-299-34)
EJ-276 pulse-shape discriminating (PSD) plastic scintillator enables the separation of gamma and fast neutron signals on the basis of their timing characteristics. This scintillator replaces all versions of EJ-299-33 and EJ-299-34 PSD scintillators and embodies the following improvements:
- Excellent physical hardness, equal to or superior to that of standard plastic scintillators
- Long-term stability of scintillation and optical characteristics
- Basic PSD properties increased to being comparable to the best liquid scintillators
EJ-276G with green fluorescence is also available for use with solid-state sensors.
|Light Output (% Anthracene)||56||52|
|Scintillation Efficiency (photons/1 MeV e-)||8,600||8000|
|Wavelength of Maximum Emission (nm)||425||490|
|No. of H Atoms per cm3 (x1022)||4.53||4.53|
|No. of C Atoms per cm3 (x1022)||4.89||4.89|
|No. of Electrons per cm3 (x1023)||3.52||3.52|
|Approx. Mean Decay Times of First 3 Components (ns)||Gamma Excitation||13, 35, 270||—|
|Neutron Excitation||13, 59, 460||—|
Attacked by: Aromatic solvents, Chlorinated solvents, Ketones, Solvent bonding cements, etc.
Stable in: Water, Dilute acids and alkalis, Lower alcohols, and Silicone greases.
It is safe to use most epoxies with these scintillators.