BC-501A, BC-519

Neutron Gamma PSD Liquid Scintillators

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.


  • 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


    Data Sheets

    BC-501, BC-501A, BC-519 Liquid Scintillators

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