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Evaluation of a Closed-End Coaxial High-Purity Germanium Cylindrical Detector Efficiency Using a Simplified Geometrical Approach
Nuclear Technology / Volume 168 / Number 1 / October 2009 / Pages 41-44
Detectors / Special Issue on the 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (Part 1) / Radiation Measurements and Instrumentation / dx.doi.org/10.13182/NT09-A9098
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The full-energy peak (photopeak) efficiency and peak-to-total ratio of a closed-end coaxial high-purity germanium detector were calculated and compared with the experimental measurements in the energy range between 60 and 1863 keV. The attenuation of photons by the source itself (self-absorption), the source container, and the detector end cap materials is also included. Many experimental readings have been taken for the source-detector system used in this investigation. By comparison, the calculated and experimental full-energy peak efficiency and peak-to-total ratio values are in good agreement; the overall percentage error is <3%.
