Efficiency calibration of a well-type HPGe detector using experimental and Monte Carlo simulation techniques
Well-type high-purity germanium detectors are well suited for the analysis of small samples, as they combine high detection efficiency with low background radiation. The well geometry however makes efficiency calibration more difficult than that of ordinary HPGe detectors, due to intense tr...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
VINCA Institute of Nuclear Sciences
2020-01-01
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| Series: | Nuclear Technology and Radiation Protection |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1451-3994/2020/1451-39942002121D.pdf |
| Summary: | Well-type high-purity germanium detectors are well suited for the analysis of
small samples, as they combine high detection efficiency with low background
radiation. The well geometry however makes efficiency calibration more
difficult than that of ordinary HPGe detectors, due to intense true
coincidence and possibly random summing effects. Such a detector has been
installed at the Environmental Radioactivity Laboratory of the National
Centre for Scientific Research "Demokritos". For the calibration of this
detector, experimental and Monte Carlo simulation techniques were applied. To
this end, calibration sources were produced from the radionuclides available
at the Environmental Radioactivity Laboratory. Starting from the geometrical
characteristics of the detector as provided by the manufacturer, using the
calibration sources and applying Monte Carlo simulation techniques, the
detector was characterized and peak efficiency, as well as total-to-peak
calibration curves were produced. The results of the calibration finally
obtained by simulation are found to be in good agreement with the respective
experimental calibration results. |
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| ISSN: | 1451-3994 1452-8185 |