BC-523A Enriched Boron-loaded Liquid Scintillator General Description BC-523A liquid scintillator contains boron enriched in 10B to a minimum of 90%. The scintillator is useful in total absorption neutron spectrometry. 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 about 0.5 microseconds. The scintillator also exhibits excellent pulse shape discrimination properties for neutron-gamma separation. References dealing with the performance of boron-loaded organic scintillators are listed on the 2nd page. BC-523A is supplied sealed in ready-to-use glass or metal cells. The liquid is sensitive to moisture, and you must take care to avoid exposing it to air if you perform your own encapsulation. Properties 10B Content 4.41% Density 0.916 g/cm3 Light output 65% anthracene Decay time, short component 3.7 nsec Wavelength of maximum emission 424 nm Bulk light attenuation >4 meters Refractive index 1.415 Atomic Composition No. of H atoms per cm3 4.98 x 1022 No. of C atoms per cm3 2.86 x 1022 No. of O atoms per cm3 0.811 x 1022 No. of 10B atoms per cm3 0.243 x 1022 No. of 11B atoms per cm3 0.027 x 1022 References L.W. Bollinger and G.E. Thomas, Rev. Sci. Instrum., 28, 489-496 (1957) Von L. Sutterlin, Atomkernenergie, Vol. 12, NO. 7/8, 287,288 (1967) L.R. Greenwood and N.R.Chellew, Rev,Sci, Instrum., 50 (4), 466-471 (April, 1979) D.M. Drake, et al, Nucl. Instr. & Methods in Phy. Res., A274 576-582 (1986) [ 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