Plastic Detectors

Summary

Organic (plastic) scintillators are composed of a transparent host material (a plastic) doped with a scintillating organic molecule (e.g. POPOP : p-bis [2-(5-phenyloxazolyl)] benzene). Radiation is absorbed by the host material, mostly via Compton effect because of the low density and Z- value of organic materials. Because of this, plastic scintillators are primarily used for the detection of b - and other particles. Furthermore, plastic scintillators are frequently used when large detector volumes are required e.g. in security or health physics applications. The cost of large plastic scintillation detectors (per volume) is much lower than that of equivalent size NaI(Tl) detectors; plastic scintillators can be manufactured in meter long slabs.

FEATURES

  • High light output
  • Low density and Z
  • Fast

APPLICATIONS

  • Particle detection
  • Beta detection

SPECIFICATIONS

Density

1.03 g/cm3

Emission Max

75-600 nm

Decay Constant

1-3 µs

Refractive Index

1.58

Conversion Efficiency

25-30

Hygroscopic

No

 

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