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Plastic Scintillator Detectors

Stacked Wrapped Plastic
cast plastic
sphere plastic

Plastic scintillator sheets consists of a solid solution of organic scintillating molecules in a polymerized solvent. The ease with which they can be shaped and fabricated makes plastic scintillators an extremely useful form of organic scintillator.

A typical plastic scintillator has a wavelength of maximum emission at around 425 nm. Plastic scintillators are characterized by a relatively large light output - typically 25-30% of NaI(Tl) - and a short decay time of around 2 ns. This makes the material suited for fast timing measurements.

All plastic scintillators are sensitive to X-rays, gamma rays, fast neutrons and charged particles.

You can obtain  as finished plastic scdetector assemblies. These incorporate light guides, photomultiplier tubes, special radiation entrance windows, light tight wrappings, and electronics. Integrally mounted or demountable detectors can be designed to meet your specifications.

 

 

Features/Benefits

  • Sensitive to X-rays, gamma rays, fast neutrons and charged particles
  • Special formulations available for thermal neutron and improved X-ray efficiency

 

 

Specifications

 

Standard Sizes 
0.5 mm ± 0.1 mm 30 x 60 cm
1 mm ± 0.1 mm 30 x 60 cm
1.5 mm ± 0.25 mm 30 x 101 cm
2 mm ± 0.25 /- 0.3 mm 45 x 101 cm
3 mm ± 0.38 mm 63 x 101 cm
5 mm + 0.56 / - 0.46 mm 63 x 203 cm
6.4 mm + 0.64 / - 0.51 mm 63 x 203 cm
10 mm ± 0.51 mm 63 x 203 cm
12.7 mm ± 0.64 mm 63 x 203 cm
20 mm ± 0.73 mm 63 x 203 cm
25 mm + 0.76 / - 1 mm 63 x 203 cm
38 mm ± 0.76 mm 63 x 203 cm
50 mm ± 2 mm 63 x 203 cmc
75 mm ± 2.5 mm 60 x 101 cm
100 mm ± 3.8 mm 60 x 101 cm
125 mm ± 6 mm 60 x 101 cm
150 mm ± 6 mm 60 x 101 cm
*  This dimension is controlled during the casting process
**  Large sizes available, but with different tolerances

 

Large Cast Sheet Size Range
Thickness Range Maximum Width Maximum Length
1 - 5 cm 30 cm 450 cm
0.5 - 5 cm 45 cm 400 cm
0.5 - 5 cm 60 cm 300 cm
1 - 2.5 cm 100 cm 200 cm
1 - 3.8 cm 120 cm 120 cm
Please ask about other speical sizes you may need

 

Finish for 2 parallel large surface:

“BEST” As cast surface finish is optically clear and quite flat. Sheet material is cast to thickness required for the order between glass sheets, so a glass-like polished surface is the result.
Diamond Milled cast faces (for 2 parallel large surface) Finish is flatter than as-cast, optically clear (but not as good as as-cast). Small tool marks may be visible under magnification.

Finish for edges:
“BEST” Diamond Milled edges - Surface finish is optically clear and quite flat.
Rough or Saw-cut (for edges) - The finish is rough and NOT optically clear.  The customer will need to do further processing.

Finished detector options:

  • wrapped in reflector and light tight black vinyl, as per Saint-Gobain standard tolerances
  • light guides coupled to scintillator   
  • photomultiplier tubes - Integrally mounted or demountable PMT can be designed to meet your specifications
  • integrated electronics

Related Resources

 Organics Brochure