Empirical formula for the HPGe-detector efficiency dependence on energy and distance
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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.
KeywordsEfficiency 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.
- 3.Debertin K, Helmer RG (1988) Gamma and X-ray spectrometry with semiconductor detectors. Elsevier, AmsterdamGoogle Scholar
- 4.Knoll GF (2010) Radiation detection and measurement, 4th edn. Wiley, New YorkGoogle Scholar
- 7.Nair C, Junghans AR, Erhard M et al (2005) Absolute efficiency calibration of hpge detectors for photoactivation experiments. Annual Reports—Forschungcentrum Dresden- Rossebdorf, FZD. https://www.hzdr.de/FWK/jb05/PDF/s41.pdf
- 8.Lengyel A, Parlag OA, Maslyuk VT (2009) Semiempirical description of Ge(Li) and HPGe detectors efficiency for photofission experiments. Uzhgorod Univ Sci Her Ser Phys 24:95–99Google Scholar
- 9.Potoki IS (2012) Parametric description of the absolute efficiency of semiconductor detectors for measuring of bulk sample activity. Uzhgorod Univ Sci Her Ser Phys 31:196–201Google Scholar
- 13.NuDat 2.6. National Nuclear Data Center, Brookhaven National Laboratory. www.nndc.bnl.gov/nudat2/. Accessed 2 Oct 2017
- 14.James F, Ross M (1967) Function minimization and error analysis. MINUIT D506. CEREN Computer Centre Program library, pp 1–47Google Scholar
- 15.Lepy MC (2010) Detection efficiency. Presented to IAEA-ALMERA Technical Visit at Laboratoire National Henri Becquerel. http://www.nucleide.org/ICRM_GSWG/Training/Efficiency.pdf