PLASTIC SCINTILLATOR PAINT
EJ-296 is a solution of plastic scintillator materials dissolved in a xylene solvent to form a paint for fabricating ultra-thin films or for applying directly to a customer's support surface. Scintillator films as thin as 0.1 micrometer can be made by forming the films on a water surface. Spin casting techniques have also been used successfully to form films of well controlled thickness. EJ-296 is a moderately viscous solution which may be applied as received. For making thinner films, the paint can be thinned with additional solvent.
The fluor system of EJ-296 has been formulated specifically for the fabrication of thin films with two specific considerations in mind: (1) Vacuum compatibility and (2) maximum shifting of the primary scintillation light in thin films. Because the base solvent is xylene, care should be taken in handling and storing EJ-296 with regard to potential flammability. Always work in a well ventilated area.
|Light Output (% Anthracene)||60|
|Scintillation Efficiency (photons/1 MeV e-)
|Wavelength of Maximum Emission (nm)||435|
|Rise Time (ns)
|Decay Time (ns)||~ 2.5|
|Pulse Width, FWHM (ns)||~ 3.5|
|No. of H Atoms per cm3 (x1022)||5.17|
|No. of C Atoms per cm3 (x1022)||4.69|
|No. of Electrons per cm3 (x1023)||3.33|
|Coefficient of Linear Expansion||7.8 x 10-5 below 67°C|
|Light Output vs. Temperature||
At 60°C, L.O. = 95% of that at 20°C
No change from 20°C to -60°C
|Temperature Range||-20°C to 60°C|
Attacked by: Aromatic solvents, Chlorinated solvents, Ketones, Solvent bonding cements, etc.
Stable in: Water, Dilute acids and alkalis, Lower alcohols, and Silicone greases.
It is safe to use most epoxies with this scintillator.