Radiometer with data recording function

Correlation-inspired methods are considered for analyzing stochastic Geiger-Müller (GM) pulse trains, bridging concepts from correlation optics and radiation metrology. This paper presents the design and evaluation of a portable radiometer-logger (LD-01) intended for recording the ambient dose rate of gamma radiation. The system employs an SBM-21 GM tube in combination with a high-voltage converter and a microcontroller-based digital unit. The architecture incorporates an STM32F401RCTB microcontroller, graphical LCD, and non-volatile memory (1024 kB). Preliminary calibration experiments were conducted using a BR-9B reference dosimeter and an Am-241 sample from a detector ionization chamber (NIS-07). The results indicate a proportionality factor of approximately 50 ∓ 10 counts per minute (CPM) per microsievert per hour (μSv/h), consistent with the nominal sensitivity of the GM tube. Extended experiments confirmed sensitivity to the source and stable return to background levels. The prototype demonstrated reliable performance in continuous operation, enabling visualization of both short-term fluctuations and long-term background trends. Limitations include ∓20% measurement uncertainty and the absence of energy compensation. Potential improvements are identified in calibration accuracy, extended functionality, and integration of correlation-based signal processing.

• Publication year

  2025

• Venue

  International Conference on Correlation Optics

• Publication date

  2025-11-10

• Fields of study

  Physics, Engineering

• Identifiers
  DOI 10.1117/12.3092024
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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