BC-523 liquid scintillator contains natural boron (19.7% 10B) and BC-523A contains boron enriched in 10B to a minimum of 90%. Both liquid scintillators are useful for total absorption neutron spectrometry and have excellent pulse shape discrimination properties for neutron-gamma separation.
A fast neutron will produce a prompt recoil proton pulse with its initial scatterings in the liquid. Neutrons that are sufficiently thermalized within the scintillator are likely to undergo the 10B (n, a) capture. The capture pulse is in delayed coincidence with the prompt pulse and is used to identify neutron events. For neutron energies below 200 keV, the capture time constant is determined solely by the 10B concentration. The average capture time is 1.4 microseconds for BC-523 and about 0.5 microseconds for BC-523A.
BC-523 and BC-523A are supplied sealed in ready-to-use glass or metal cells.
- Bulk: 1 Liter, 1 gallon (3.8 liters), 5 gallons (19 liters), 25 gallons (95 liters) and 55-gallon quantities.
- MAB or MVB metal cells with typical 1"x1", 2"x2", 3"x3" & 5" diameters x 5" depth
- VB-1, TPB-1, HB-1 glass cells: 1.5"x1.5", 2"x2" and 3" diameter x 3" depth
|Light Output, %Anthracene||65||65|
|Wavelength of Maximum Emission, nm||425||425|
|Decay Time, short component, ns||3.7||3.7|
|Bulk Light Attenuation, meters||>4||>4|
|No. of H Atoms per cc (x1022)||4.97||4.98|
|No. of C Atoms per cc (x1022)||2.86||2.86|
|No. of O Atoms per cc (x1022)||0.808||0.811|
|No of 10B Atoms per cc (x1022)||0.053||0.243|
|No of 11B Atoms per cc (x1022)||0.216||0.027|
BC-523A Boron-loaded Liquid Scintillators
BC-523 Boron-loaded Liquid Scintillators