BC-501A and BC-519 are liquid scintillators intended for applications involving neutron detection in the presence of gamma radiation.

BC-501A is the most popular and is formulated to yield excellent PSD properties for neutron-gamma discrimination

BC-519 is mineral-oil-based and also exhibits excellent PSD properties. This liquid is mainly intended for use in large volumes and is therefore formulated to have an especially high flash point for safety purposes.

Applications:

BC-501A: γ >100 keV, fast n spectrometry
BC-519: γ, fast n; n-γ discrimination

Typical availability:

Bulk: 1 Liter, 1 gallon (3.8 liter), 5 gallon (19 liter), 25 gallon (95 liter) 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

Scintillation Properties	BC-501A	BC-501	BC519
Light Output, %Anthracene	78	80	60
Wavelength of Maximum Emission, nm	425	425	425
Decay Time, short component, ns	3.2	3.3	4
Atomic Composition
No. of H Atoms per cc (x10²²)	4.82	5.25	6.62
No. of C Atoms per cc (x10²²)	3.98	4.08	3.83
Ratio H:C Atoms	1.212	1.287	1.728
No. of Electrons per cc (x10²³)	2.87	2.97	2.96