Determination of the optimal cylindrical geometry heights for gamma-ray spectrometric analysis

The optimal heights (sample thickness) for samples of cylindrical geometry analyzed by gamma-spectrometry with HPGe detectors have been determined by studying the correlation between the sample thickness and the sample mass multiplied by the efficiency. For energies higher than 100 keV, the optimal...

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Bibliographic Details
Published in:Radiation measurements 2014-11, Vol.70, p.34-38
Main Authors: Shweikani, R., Hasan, M., Tlas, M., Doubal, A.W.
Format: Article
Language:English
Subjects:
Correlation analysis
Cylindrical geometry
Density
Detectors
Earth sciences
Earth, ocean, space
Exact sciences and technology
Gamma-ray
Geochronology
HPGe detector
Isotope geochemistry. Geochronology
Optimal sample thickness
Optimization
Radiation measurement
Spectroscopy
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Summary:The optimal heights (sample thickness) for samples of cylindrical geometry analyzed by gamma-spectrometry with HPGe detectors have been determined by studying the correlation between the sample thickness and the sample mass multiplied by the efficiency. For energies higher than 100 keV, the optimal thickness for a cylindrical sample with a diameter of 6.8 cm was determined to be 10 cm, regardless of the type of HPGe detector. A strong relationship was observed between the optimal sample thickness and the gamma energy line (when E  100 keV regardless the type of HPGe.•For N-type HPGe, thicknesses 3.5 cm for 46.5 keV and 5 cm for 59.5 keV were found.•Very good agreement between estimation and experimental results were found.
ISSN:1350-4487
1879-0925
DOI:10.1016/j.radmeas.2014.09.005