BC-551 Lead-loaded Liquid Scintillator General Description BC-551 is a xylene-based scintillator which contains 5% lead by weight. This clear homogeneous liquid yields much higher X-ray and gamma sensitivity than unloaded liquid or plastic scintillators, particularly for photon energies below 200 keV. It comes encapsulated in ready-to-use glass or metal cells or in bulk, bottled under inert gas, for transfer to your containers. Properties Light Output 31% anthracene Wavelength of Maximum Emission 425 nm Decay Time 2 ns Density 902 g/cm3 Refractive Index 1.519 Flash Point (T.O.C.) 24°C (75°F) Atomic Composition No. of H Atoms per cm3 4.74 x 1022 No. of C Atoms per cm3 3.82 x 1022 No. of Pb Atoms per cm3 1.31 x 1020 No. of Electrons per cm3 2.92 x 1023 Linear Attenuation Coefficients, cm-1 Energy, keV BC-551 Unloaded Liquid 10 7.853 1.890 15 5.860 0.674 20 5.860 0.382 40 0.822 0.198 60 0.383 0.172 80 0.255 0.158 100 0.438 0.149 150 0.215 0.133 200 0.160 0.121 [ Liquid scintillators ] Organic Products | Inorganic Scintillation Products | Crystal Products Bicron RMP | Optics and Oxides | Crismatec | Product Search/Faq Company Profile | News | Contact Us | NE Technology | Home