BC-428 Green-Emitting Plastic Scintillator General Description BC-428 is a clear, transparent plastic scintillator with a bright green fluorescence. It is intended for use with photodiodes and charged coupled devices (CCDs) which have optical sensitivities in the green and red spectra. Phoswich detectors and other special systems which use optical techniques advantageously for background reduction and selected signal enhancement also may employ BC-428. Comparing BC-428 to BC-400 scintillator shows that BC-428 has about the same scintillation efficiency. However, its relative light output is 56% of BC-400's with bialkali photocathode PMTs and 85% with S-11 PMTs. Click Here to Order BC-428 Click Here to Order BC-428A General Technical Data Base Polyvinyltoluene Density 1.032 g/cc Atomic Ratio, H/C ~1.1 Refractive Index 1.58 Coefficient of Linear Expansion 7.8 x 10-5 below 67°C Light Output Temperature Dependence At +60°C = 95% of that at +20°C; independent of temperature from -60°C to +20°C Vapor Pressure May be used in a vacuum Solubility Soluble in aromatic solvents, chlorine, acetone, etc. Insoluble in water, dilute acids, lower alcohols, silicone fluid, grease & alkalis. Scintillation Properties Light Output 36% anthracene Rise Time (10-90%) 1.6 ns Integral Rise Time (10-90%) 30 ns Decay Time (1/e) 12.5 ns Light Attenuation Length, 10 mm sheet 150 cm Wavelength of Maximum Emission 480 nm No. of H Atoms per cc 5.23 x 1022 No. of C Atoms per cc 4.74 x 1022 Ratio H:C Atoms 1.103 No. of Electrons per cc 3.37 x 1023 [ Cast plastic 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