Phone: (325)-235-4276

Toll Free: (888)-800-8771

Email:

 

GADOLINIUM LOADED

EJ-331, EJ-335

 EJ-331EJ-335

The principal applications of these liquid scintillators are neutron spectrometry and neutrino studies. The neutron capture reaction in gadolinium produces a multiplicity of gamma rays with a total energy of about 8 MeV. Delayed coincidence and pulse shape discrimination techniques are commonly employed with these liquids. Also, because they are often employed in large volumes, both are formulated with high flash point solvents.

EJ-331, based on a fully aromatic solvent, provides the maximum light output consistent with long-term stability. The standard gadolinium loading is 0.5% by weight, but it is also available with gadolinium loadings from 0.1% to 1.5%.

EJ-335 contains mineral oil substituted for some of the aromatic solvent for purposes of higher hydrogen content and higher flash point for use in very large tanks. The maximum gadolinium content is 0.5%, and loadings down to 0.1% are used in very large volume detectors.

 

PROPERTIES EJ-331-0.5%
EJ-335-0.25%
Gadolinium Content (% w/w) 0.5 0.25
Light Output (% Anthracene) 68 55
Wavelength of Maximum Emission (nm)
424 424
Bulk Light Attenuation Length (m) >4 >4.5
Specific Gravity 0.90 0.89
Refractive Index 1.50 1.49
Flash Point (°C) 44 64
No. of H Atoms per cm3 (x1022) 5.27 6.16
No. of C Atoms per cm3 (x1022) 4.00 3.93
No. of Electrons per cm3 (x1023) 2.98 3.06

 

EJ-331 & EJ-335 Emission Spectrum

This website uses cookies. Some of them are essential for the operation of the site, while others help us to improve this site and the user experience (tracking cookies). Please note that if you reject cookies, you may not be able to use all the functionalities of the site. By using our site you accept the terms of our Privacy Policy.