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Ceramic based electronic component as retrospective radiation dosimeter.

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Carbon coated ceramic resistors from electronics can reconstruct radiation doses using thermoluminescence (TL). This method shows a linear dose response for emergency dose assessment.

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Area of Science:

  • Dosimetry
  • Luminescence techniques
  • Materials science

Background:

  • Portable electronic devices contain components useful for retrospective dose reconstruction.
  • Surface mount devices (SMDs) like resistors are potential dosimeters.
  • Luminescence techniques offer sensitive methods for radiation dose assessment.

Purpose of the Study:

  • To analyze carbon coated ceramic resistors for retrospective dose reconstruction.
  • To evaluate the thermoluminescence (TL) properties of these resistors.
  • To determine the feasibility of using these resistors as dosimeters in radiological emergencies.

Main Methods:

  • Carbon coated ceramic resistors were extracted from electronic instruments.
  • Samples were subjected to beta irradiation.
  • Thermoluminescence (TL) measurements were performed.
  • Kinetic parameters were evaluated using deconvolution methods.

Main Results:

  • A major dosimetric peak was observed around 540 K, with three additional low-temperature peaks.
  • A linear beta dose response was observed from 1 Gy to 125 Gy.
  • The Minimum Detectable Dose (MDD) was determined to be 0.1 Gy.
  • Supralinear dose response was noted below 1 Gy.
  • Fading studies were conducted up to 30 days.

Conclusions:

  • Carbon coated ceramic resistors are suitable for retrospective dose reconstruction using thermoluminescence.
  • The observed linear dose response and low MDD make them promising for radiological emergency applications.
  • Further investigation into kinetic parameters aids in understanding the dosimetric properties.