Determination of the dose rate from the pulse-height spectra of an airborne gamma-ray spectrometer based on an unmanned aerial vehicle

• Published in: Atomic energy (New York, N.Y.) N.Y.), 2023-11, Vol.135 (1-2), p.74-80
• Main Authors: Gavrilov, S. L., Pimenov, A. E., Shvedov, A. M., Aron, D. V., Dyakov, S. V.
• Format: Article
• Language: English
• Subjects: Cesium 137; Cesium isotopes; Cesium radioisotopes; Detectors; Drone aircraft; Energy; Gamma ray spectrometers; Gamma rays; Hadrons; Heavy Ions; Mathematical models; Measurement; Monte Carlo method; Monte Carlo simulation; Nuclear Chemistry; Nuclear Energy; Nuclear Physics; Nuclear power plants; Physics; Physics and Astronomy; Radiation; Scientific imaging; Sensors; Simulation; Simulation methods; Soil contamination; Soil pollution; Soil surfaces; Spectra; Unmanned aerial vehicles; γ Radiation
• ISSN: 1063-4258; 1573-8205
• DOI: 10.1007/s10512-024-01084-w

In the present study, data for converting the pulse-height spectra of an airborne gamma-ray spectrometer with a NaI (31 × 31 mm) detector to the dose rate values were obtained using the mathematical simulation. The results were tested using model tasks for determining pulse-height spectra at heights from 15 to 75 m. A point isotropic source of 60 Co and the infinite contamination of the soil surface with 137 Cs were considered as sources of gamma-radiation. The simulation was carried out using the Monte Carlo method. As a result, uncertainties of obtained conversion coefficients for dose rate estimations were evaluated.