Light output of EJ228 scintillation neutron detectors

The light output of neutron detectors based on the plastic scintillator EJ228 is studied as a function of neutron energy using a time tagged 252Cf source. Calibration of the light output scale is performed by fitting the experimental distribution of Compton scattering events of photons from a 22Na source with a response function obtained by Gaussian smearing of the predicted line-shape. The light output curve as well as the pulse height resolution for the EJ228 scintillators is very close (within 5%) to those recently reported for NE213 type organic liquid scintillators.