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Determination of coincidence summing correction factors for 22na point source

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2019
RadProc.2018.07.pdf (556.9Kb)
Authors
Jevremović, Aleksandar M.
Kandić, Aleksandar
Đurašević, Mirjana M.
Vukanac, Ivana
Čeliković, Igor T.
Milošević, Zoran
Puzović, Jovan
Conference object (Published version)
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© 2019 RAD Association
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Abstract
The coincidence summing effect plays an important role in HPGe spectrometry, especially at low source-detector distances, due to a large solid angle; therefore, the calculation of correction factors is necessary. The aim of the research described in this paper was to compare values of correction factors for a 22Na point source obtained using the GESPECOR software package (Monte-Carlo method) and experimentally obtained values. Measurements were performed using a semiconductor HPGe spectrometer and the point source axially positioned at nine different distances from the detector end-cap. For the purpose of determining correction factors, a system of equations was formed, which, besides nuclear data as the input parameters, uses the experimentally obtained values of the total count in the entire spectrum, as well as the counts in the full energy peaks. The system of equations was solved for each particular case and correction factors were determined. By comparing the results obtained usi...ng the experimental and Monte-Carlo method, it was found that the correction factors for the 22Na point source have discrepancies less than 3%. The significance of these discrepancies was also verified from a statistical point of view using a Student's t-test. © 2019 RAD Association. All rights reserved.

Keywords:
Coincidence summing / HPGe spectrometry / Monte-Carlo method
Source:
RAD Conference Proceedings, 2019, 3, 32-35
Projects:
  • Nuclear physics, methods and application (RS-171018)
Note:
  • Conference of 6th International Conference on Radiation and Applications in Various Fields of Research, RAD 2018 ; Conference Date: 18 June 2018 Through 22 June 2018; Conference Code:149557

DOI: 10.21175/RadProc.2018.07

ISSN: 2466-4626

Scopus: 2-s2.0-85070675531
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URI
http://vinar.vin.bg.ac.rs/handle/123456789/8460
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Vinča

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