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Optimizing gamma-ray spectrometers for UAV-borne surveys with geophysical applications

van der Veeke, S. and Limburg, J. and Koomans, R.L. and Söderström, Mats and van der Graaf, E.R. (2021). Optimizing gamma-ray spectrometers for UAV-borne surveys with geophysical applications. Journal of Environmental Radioactivity. 237 , 106717
[Research article]

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Abstract

Heavy duty unmanned aerial vehicles (UAVs) have made it possible to fly with large gamma-ray spectrometers that weigh several kilograms. Moreover, they can be purchased at an affordable price. These large UAV-borne gamma-ray detection systems are used to map the naturally occurring radionuclides 40K, 238U, 232Th. Such platforms have the advantage that they can be deployed over terrain that is difficult to access, while still maintaining a high spatial resolution. In contrast to UAV-borne radioactive pollution studies, the naturally occurring radionuclides have a much lower activity and therefore require longer integration time, slower flying speed or a larger detector, in order to effectively determine the spatial radionuclide distribution. Therefore, the question arises: what is the minimum practical detector size required to successfully map 40K, 238U and 232Th concentrations from UAV platforms. In this study an agricultural field has been mapped with three different scintillator-based gamma-ray spec-trometers: a 2000 ml, 1000 ml, and 350 ml detector. They were mounted together on the same UAV. At a flying height of 20 m and a speed of 5.6 m s

Authors/Creators:van der Veeke, S. and Limburg, J. and Koomans, R.L. and Söderström, Mats and van der Graaf, E.R.
Title:Optimizing gamma-ray spectrometers for UAV-borne surveys with geophysical applications
Series Name/Journal:Journal of Environmental Radioactivity
Year of publishing :2021
Volume:237
Article number:106717
Number of Pages:14
ISSN:0265-931X
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 103 Physical Sciences > Accelerator Physics and Instrumentation
Keywords:Airborne gamma-ray spectrometry (GRS), Unmanned aerial vehicles (UAVs), Variogram, Kriging, Full spectrum analysis (FSA), Radiation footprint
URN:NBN:urn:nbn:se:slu:epsilon-p-113058
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113058
Additional ID:
Type of IDID
DOI10.1016/j.jenvrad.2021.106717
ID Code:25144
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: SLUpub Connector
Deposited On:01 Sep 2021 12:27
Metadata Last Modified:01 Sep 2021 12:31

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