Terrestrial gamma radiation baseline mapping using ultra low density sampling methods

Kleinschmidt, R.; Watson, David J.

doi:10.1016/j.jenvrad.2015.05.008

Cited by 5 publications

(1 citation statement)

References 23 publications

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“…In the last decades various codes devoted to the calculation of the aircraft crew's exposure to cosmic radiation have been developed on the base of Monte Carlo techniques, analytical solutions and empirical data fitting (Spurný and Daschev, 2002;Kleinschmidt and Watson, 2016;Bottollier-Depois et al, 2009). Since most of them are user friendly and well tested, their adoption for the calibration of an AGRS detector for cosmic dose estimation can be a valid option with respect to traditional characterization procedures.…”

Section: Flightmentioning

confidence: 99%

Airborne Gamma-Ray Spectroscopy for Modeling Cosmic Radiation and Effective Dose in the Lower Atmosphere

Baldoncini

Albéri

Bottardi

et al. 2018

IEEE Trans. Geosci. Remote Sensing

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Abstract. In this paper we present the results of a ∼5 hour airborne gamma-ray survey carried out over the Tyrrhenian sea in which the height range (77-3066) m has been investigated. Gamma-ray spectroscopy measurements have been performed by using the AGRS_16L detector, a module of four 4L NaI(Tl) crystals. The experimental setup was mounted on the Radgyro, a prototype aircraft designed for multisensorial acquisitions in the field of proximal remote sensing. By acquiring high-statistics spectra over the sea (i.e. in the absence of signals having geological origin) and by spanning a wide spectrum of altitudes it has been possible to split the measured count rate into a constant aircraft component and a cosmic component exponentially increasing with increasing height. The monitoring of the count rate having pure cosmic origin in the >3 MeV energy region allowed to infer the background count rates in the Tl photopeaks, which need to be subtracted in processing airborne gamma-ray data in order to estimate the potassium, uranium and thorium abundances in the ground. Moreover, a calibration procedure has been carried out by implementing the CARI-6P and EXPACS dosimetry tools, according to which the annual cosmic effective dose to human population has been linearly related to the measured cosmic count rates.

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Section: Flightmentioning

confidence: 99%