[Dosimetry using a silicon diode and an electrochemical integrator]

Area of Science:

• Medical Physics
• Radiation Detection and Measurement

Context:

• Development of novel radiation detection instruments is crucial for accurate dose assessment.
• Silicon diodes offer a promising platform for radiation-to-current conversion.
• Electrochemical integrators provide a method for accumulating charge, enabling dose measurement.

Purpose:

• To evaluate the performance of a diode-dosimeter for measuring 60Co gamma ray exposure.
• To assess the linearity and dose range of the developed dosimeter.
• To determine the feasibility of using this device for radiation dosimetry.

Summary:

• A diode-dosimeter was constructed using a silicon diode as a radiation-to-current converter and an MD1B2 "Memoriode" (electrochemical integrator) for current integration.
• The dosimeter's response, measured as terminal voltage on the Memoriode, demonstrated good linearity with exposure across one to two decades for each diode tested.
• The device is suitable for measuring exposures ranging from 260 mC/kg (10^3 R) to 2.6 kC/kg (10^7 R) by employing diodes with varying sensitivities.

Impact:

• This study introduces a cost-effective and reliable radiation measurement tool.
• The dosimeter's wide linear range and sensitivity make it adaptable for various dosimetry needs.
• Findings contribute to advancements in radiation monitoring and safety protocols.