|EJ-200 plastic Scintillator||
This plastic scintillator combines the two important properties of
long attenuation length and fast timing and is therefore particularly
useful for time-of-flight systems using scintillators greater than
one meter long. Typical measurements of 4 meter optical attenuation
length are achieved in strips of cast sheet in which a representative
size is 2cm x 20cm x 300cm.
The combination of long attenuation length, high light output, and emission spectrum well matched to the common photomultipliers recommends EJ-200 as the detector of choice for many industrial applications such as gauging and environmental protection where high sensitivity of signal uniformity are critical operating requirements.
|Physical and Scintillation Constants:|
|Light Output, % Anthracene||64%|
|Scintllation effici., photons/1MeV e¯||10,000|
|Wavelength of max emission, nm||425|
|Rise Time, nSec||0. 9|
|Decay Time, nSec||2. 1|
|Pulse Width [FWHM], nSec||~ 2. 5|
|No. of H atoms per cm3 x 1022||5. 23|
|No. of C atoms per cm3 x 1022||4. 74|
|No. of electrons per cm3 x 1023||3. 37|
|Density, g/cc||1. 032|
|Refractive Index:||1. 58|
|Vapor Pressure:||Is vacuum-compatible|
|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
Is attacked by aromatic solvents, chlorinated solvents,
ketones, solvent bonding cements, etc.
It is stable in water, dilute acids and alkalis,
lower alcohols and silicone greases. It is safe to use
most epoxies and "super glues" with EJ-200.
|G-tech, Corp. local representative in Japan|
|365-1, Sayamagahara, Iruma-shi, Saitama 358-0032|
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