Empirical formula for the HPGe-detector efficiency dependence on energy and distance

  • I. PylypchynetsEmail author
  • A. Lengyel
  • O. Parlag
  • V. Maslyuk
  • I. Potoki


The full-energy-peak efficiency calibration for a HPGe detector has been constructed in the γ-ray energy range from Eγ = 50–1500 keV, using 8 standard point sources of gamma radiation, namely Na-22, Co-57, Co-60, Cd-109, Ba-133, Cs-137, Eu-152, Am-241. The measuring system equipped with sample holder to investigate the source-to-detector distance (x) dependence for 5–24.5 cm range. The universal empirical formula was proposed to calculate the detector efficiency depending on energy Eγ and distance (x). The formula was tested for several measurements and broadened energy rage up to 3 MeV.


Efficiency calibration Radionuclides Gamma spectrometry HPGe detector Geometric dependence of the efficiency 



The authors would like to express sincere thanks to the Kyiv Regional Research and Production Center for Standardization, Metrology and Certification “KIVOBLSTANDARTMETROLOGIYA” for providing certified gamma-ray samples for the experiment. The authors acknowledge Kushtan I.M. for the technical support of the experiment.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.Institute of Electron PhysicsUkrainian National Academy of SciencesUzhgorodUkraine

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