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GENERAL PROPERTIES |
| Polymer Base: Polvinyltoluene |
| Density , g/cc:
1.032 |
| Refractive Index:
(ND): 1.58 |
| Softening Point:
70oC |
| Coeff. of Linear Expansion:
(<67oC): 7.8x10-5 / oC |
| Vapor Pressure: Negligible. May be used
in high vacuum. |
| Light Output vs
Temperature: Independent of temperature |
| from -60oC to +20oC.
At +60oC is 95% of that at +20oC |
| Radiation Length:
43cm |
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RP-408 EMISSION
SPECTRUM |
SCINTILLATION PROPERTIES |
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Light Output ,
% Anthracene : 64 |
| Scintillation Efficiency,
Photons/ MeV: 10,000 |
| Wavelength of Max. Emission,
nm: 425 |
| Rise Time,
ns:
0.9 |
| Decay Time, ns:
2.1 |
| PulseWidth, FWHM, ns:
.2.5 |
| Atomic Ratio, H/C:
1.10 |
| No. of H Atoms per cm3,
x 1022
: 5.23 |
| No. of C Atoms per cm3,
x 1022 : 4.74 |
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Plastic Scintillators offer high performance, ease of
handling, mechanical stability at a relatively low cost. The
versatility of plastic |
| scintillators makes them the ideal choice for
large area and specially shaped detectors. |
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| RP-408 combines two important properties: |
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Relatively Fast Decay (2.1 ns) - useful for time-of-flight systems
where timing is critical, and |
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Long Optical Attenuation Length - Typical measurements of 4 meter
optical attenuation length are achieved in strips |
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of cast sheet in which a representative size is 2 cm x 20 cm x 300 cm. |
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| The emission spectrum (425 nm) is well matched
to common photomultipliers. RP-408 is the detector of choice for many |
| industrialapplication such as in gauging and
environmental protection where high sensitivity of signal uniformity are
critical |
| operating requirements. Commercially, it is the
most preferred Plastic Scintillator in use. |
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RESPONSE OF PVT BASE PLASTIC SCINTILLATORS |
RANGE OF CHARGED PARTICLES
IN MM |
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TO CHARGED PARTICLE EXCITATION |
IN REXON PLASTIC
SCINTILLATORS
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ENERGY IN MEV |
ENERGY IN MEV |
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| Effects of liquids |
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| The plastic scintillators are soluble in aromatic solvents,
acetone chlorinated solvents etc. They are unaffected by water , dilute |
| acids, alkalis, lower alcohols, pure methyl alcohol,
silicone grease or fluid. |
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| Standard Sizes and Shapes |
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| Sheet Sizes range up to 200" (5m) long by 36" (914mm) wide.
blocks are available up to 96" (2.5m) long while Rods up to |
| 48" (1220mm diameter are manufactured. Call for standard
sizes of annuli, well counters, thin films and spheres. |
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| Handlingandcleaning |
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| Plastic scintillators sheets are supplied with a protective
paper that should not be removed until ready for use. It is advisable to
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| handle all plastic scintillators with cotton or terylene
gloves. If the scintillator requires cleaning we recommend a dilute solution
of |
| liquiddetergent and a Selvyt polishing cloth or BPC grade
cotton wool. Alternatively, We can supply excellent cleaning and |
| polishing solutions. Use of this can often increase the
measured light attenuation length. Ethanol or methanol may be used. |
| Machining instructions are available upon request. |
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| Accessories: |
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| RX-688
Optical Coupling Grease |
| XR-560
REFLECTIVE PAINT-Super White for ALL Scintillators and Light pipes-water
base |
| PMTS
Rexon "P" Line of generic photomultipliers for allapplications at LOW
COST. |
| XR-61/10
High Reflectance Special Grade of Teflon - NOT FOR SOME TYPESOFPLASTIC |
| RX-79
Index matching epoxy for Plastic Scintillators. Available in 200 cc and
400cc kits. |
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ALSO SEE -
Accessories |
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This Website © Copyrighted by Rexon
Components ,Inc. 24500 High Point Road, Beachwood, OH. 44122
Phone 216-292-7373 Fax 216-292-7714
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