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[X-ray dosimetry using a charge injection type condenser].

A Yoshimura1

  • 1Radioisotope Center, Kyushu University, Fukuoka-shi, Japan.

Radioisotopes
|November 1, 1988
PubMed
Summary
This summary is machine-generated.

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This study introduces a compact X-ray dosimeter using a charge injection condenser. The novel detector measures X-ray dose by monitoring capacitance changes, offering good linearity but with higher sensitivity to low-energy X-rays.

Area of Science:

  • Solid-state physics
  • Radiation detection technology

Context:

  • Development of miniaturized radiation detectors for accurate X-ray dose measurement.
  • Exploration of charge injection condenser principles for radiation sensing.

Purpose:

  • To investigate a novel X-ray dosimeter based on a charge injection type condenser.
  • To characterize the performance of a miniaturized epoxy-housed detector.

Summary:

  • A small-sized X-ray dosimeter (approx. 4.5 x 2.5 x 1.5 mm) was developed using a charge injection condenser housed in epoxy resin.
  • X-ray dose is determined by measuring the decrease in capacitance due to electron injection into a floating gate during irradiation.
  • The dosimeter exhibits good linearity, though its response is more sensitive to low-energy X-rays compared to high-energy X-rays.

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Impact:

  • Provides a foundation for compact and potentially cost-effective X-ray dosimetry solutions.
  • Highlights the potential of charge injection condensers in radiation measurement applications.
  • Identifies energy-dependent response characteristics for further optimization.