Gaspan - An Advanced Computer Code for the Analysis of High Resolution Gamma-Ray Spectra
- 1 June 1968
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science
- Vol. 15 (3), 437-454
- https://doi.org/10.1109/tns.1968.4324969
Abstract
This paper describes the underlying principles of a computer code to automatically analyse a gamma-ray spectrum obtained with a Ge(Li) detector. The significant peaks present in the spectrum are detected by observing changes in the first derivative which is measured after random variations in count-rate have been minimised by the application of a smoothing function. Pseudo-peaks due to backscattering events or Compton edge effects are eliminated, and the intensities and energies of the component gamma-rays are calculated by fitting a Gaussian function to each peak in turn. The analysis of overlapping peaks is considered and conditions chosen to optimise their detection. It is shown that if a catalogue of gamma-ray energies is available to the computer then it is possible to automatically identify the component isotopes and evaluate their activities.Keywords
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