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Fundamentals of airborne gamma-ray spectrometry

Created 17/10/2025

Updated 17/10/2025

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The interpretation of gamma-ray spectrometric data requires an understanding of the underlying physics of the method, and an insight into the data acquisition, system calibration, and data processing and presentation procedures. The shape and intensity of a measured airborne gamma-ray spectrum is a complex function of many variables. Source thickness, source diameter, the detector response, and the distance between the source and the detector all affect the measured spectrum. The approach taken to calibration, therefore, is empirical. The source and detector are viewed as a single system, and the response of this system to changes in aircraft height (to obtain attenuation coefficients) and sources of known geometry and concentration (to obtain sensitivity coefficients) is measured. These empirically determined constants are, however, only valid for the source and source-detector geometry used in the calibration process.

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Field Value
Title Fundamentals of airborne gamma-ray spectrometry
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/97eed0d6-3cdc-4f8e-a96b-1bd8e7912d68
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage Australia
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Fundamentals of airborne gamma-ray spectrometry". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/fundamentals-of-airborne-gamma-ray-spectrometry