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A plastic scintillation counter prototype.

Etsuko Furuta1, Takao Kawano2

  • 1Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo 112-8610, Japan.

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
|July 13, 2015
PubMed
Summary

A novel plastic scintillation counter offers a liquid-free alternative for beta-ray measurement. This device demonstrates good linearity and a low detection limit for tritium-labeled compounds.

Keywords:
Plastic scintillatorPrototype deviceReusableTritiumWasteless

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Area of Science:

  • Nuclear physics and instrumentation
  • Radiochemistry and analytical chemistry

Background:

  • Liquid scintillation counters are standard for beta-ray measurement but involve liquid scintillators.
  • There is a need for alternative, potentially safer or more convenient, beta-ray detection methods.

Purpose of the Study:

  • To develop and evaluate a prototype plastic scintillation counter as an alternative to liquid scintillation counters.
  • To assess the performance of the plastic scintillation counter for beta-ray measurements.

Main Methods:

  • Assembly of a prototype device using plastic scintillation sheets (PS sheets) as the sample applicator.
  • Evaluation of the device's performance using tritium-labeled compounds.
  • Analysis of the relationship between sample activity and net count rate.

Main Results:

  • The plastic scintillation counter was successfully assembled as a liquid-free alternative.
  • Good linearity was observed between the activity of tritium-labeled compounds and the net count rate.
  • A low calculated detection limit of 0.01 Bq mL(-1) was achieved for a 2 mL sample after 10 hours of measurement.

Conclusions:

  • The prototype plastic scintillation counter is a viable alternative to liquid scintillation counters for beta-ray measurement.
  • The device offers good performance characteristics, including linearity and a low detection limit.
  • This technology may offer advantages in specific applications where liquid scintillators are undesirable.