An assortment of materials for optical interface, wrapping and reflector materials are available for making your own detector assembly.
BC-490 is a partially polymerized plastic scintillator that is cured to full hardness by the end user. The scintillator thus formed is clear with scintillation and mechanical properties similar to those of general purpose plastic scintillators. It is most frequently used in applications which require other materials to be imbedded in the scintillator, and which require the casting of unique shapes (often in special holders).
BC-490 is supplied in complete kits with detailed instructions. Each kit contains three parts: partially polymerized scintillator resin, catalyst, and catalyst solvent. Kits are available in pint, quart and gallon (0.5, 1 and 3.8 liter) sizes.
BC-600 Optical Cement is a clear epoxy resin formulated specifically for making optical joints with plastic scintillators. BC-600 is a two-part, low viscosity adhesive that can be cured at room temperature. It has a refractive index close to that of plastic scintillators and is ideal for optically bonding them to acrylic light guides or optical windows. (Refractive indices of plastic scintillators and acrylic plastic are respectively 1.59 and 1.49).
BC-620 is a highly efficient reflector employing a special grade of titanium dioxide in a water soluble binder. It is applied directly onto plastic scintillators, acrylic light guides, glass and metals. BC-620 provides an excellent combination of high reflectivity, excellent resistance to yellowing with age, good adhesion, and ease of application. It is recommended for all scintillators having emission spectra above 400nm. It is not intended for direct contact with liquid scintillators (use BC-622A for that application). It is a diffuse reflector, and, therefore, should not be applied to sheets of scintillator or light guide material where the length is much longer than the thickness.
BC-622A is prepared from a cross-linked polyurethane resin having exceptional chemical resistance to aromatics, which makes it highly suitable for use with liquid scintillators. It is ideal for our benzene-based BC-537 liquid scintillator.
BC-630 is a clear, colorless, silicone, optical coupling compound that features excellent light transmission and low evaporation and bleed at 25oC. It has a specific gravity of 1.06, an Index of Refraction of 1.465 and has a very flat transmission of approximately 95% for wavelengths between 280nm and 700nm. There is a sharp fall off below 280nm. Transmission at 270 and below is about zero.
BC-634A is a self-wetting, flexible pad just hard enough to resist tearing while handling. It is formulated for use within the temperature range of -10 to +60oC, has an index of refraction of 1.42 and an internal transmission >98% around 400nm.
BC-637 interface pads are placed between the plastic and photomultiplier tube. BC-637 is rated at 200oC.
BC-638 is a black adhesive tape 2" (50.8mm) wide by .008" (0.2mm) thick. Wrapping a plastic scintillator in one layer will give you a light-tight seal. We provide BC-638 in 36 yard (32.9m) rolls.
BC-640 is an adhesive-backed masking paper routinely used for protecting the surfaces of plastic scintillator during handling or storage. We supply BC-640 in rolls 12” (30.5cm) wide by 300' (91.4m) long
BC-642 is a .003" (0.08 mm) thick (normal) Teflon tape and is frequently used as a reflecting material for non-hygroscopic scintillators. Three layers give you optimum reflectivity. It comes in rolls 2" (50.8mm) wide by 540" (13.7m) long