EJ-301 exhibits
excellent pulse shape discrimination (PSD) properties, particularly for fast
neutron counting and spectrometry in the presence of gamma radiation. It is
identical to the widely reported NE-213 and exhibits all of the properties of
that scintillator.
EJ-309 has been
developed as an alternate to the more commonly used low-flash point PSD liquid
scintillators based on the solvent xylene. With a flash point of 144°C, it
eliminates the fire hazard associated with low-flash point liquid
scintillators. While EJ-309 provides slightly poorer PSD characteristics than
that of EJ-301, EJ-309 possesses a number of chemical properties recommending
it for use in environmentally difficult conditions. These properties include:
high flash point, low vapor pressure, low chemical toxicity, and compatibility
with cast acrylic plastics. EJ-309 is also available loaded with natural boron
as EJ-309B.
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