Developing software for self-absorption correction for gamma spectrometry of soil and water samples based on MCNP5 monte carlo simulations / Eliyeh Zamani …[et al.]

Zamani, Eliyeh and Sina, Sedigheh and Faghihi, Reza and Rafsanjani, Banafshe Zeinali (2020) Developing software for self-absorption correction for gamma spectrometry of soil and water samples based on MCNP5 monte carlo simulations / Eliyeh Zamani …[et al.]. Scientific Research Journal, 17 (2). pp. 13-32. ISSN 2289-649X

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Abstract

Gamma spectroscopy using high purity germanium detectors, HPGe, is one of the most effective methods in determining the concentration of gamma-emitting radionuclides in the environment. The HPGe detector was simulated using MCNP5 Monte Carlo code, whereby the detector calibration curves were obtained at various geometries and heights, and the appropriate software was designed for efficiency calibration. The results obtained in this study show that increasing the height and density of the samples can affect the detector efficiency, as the photon interactions with matter depend on the density and the thickness of the materials. Therefore self-absorption in the samples increases with the thickness and the density of the material. The results indicate there is a strong correlation, i.e., R2>0.98 between the efficiency and the height and the density of the samples. The self-absorption correction was compared using the designed software, and the results of simulations show that the developed software can predict the calibration curves for the new samples in different photon energies with error much less than 1%

Metadata

Item Type: Article
Creators:
Creators
Email
Zamani, Eliyeh
UNSPECIFIED
Sina, Sedigheh
samirasina@yahoo.com
Faghihi, Reza
UNSPECIFIED
Rafsanjani, Banafshe Zeinali
UNSPECIFIED
Subjects: Q Science > QA Mathematics > Analysis > Analytical methods used in the solution of physical problems
T Technology > TJ Mechanical engineering and machinery > Energy conservation
T Technology > TJ Mechanical engineering and machinery > Mechanics applied to machinery. Dynamics
Divisions: Universiti Teknologi MARA, Shah Alam > Research Management Centre (RMC)
Journal or Publication Title: Scientific Research Journal
UiTM Journal Collections: UiTM Journal > Scientific Research Journal (SRJ)
ISSN: 2289-649X
Volume: 17
Number: 2
Page Range: pp. 13-32
Official URL: https://srj.uitm.edu.my/
Item ID: 34617
Uncontrolled Keywords: gamma-ray spectroscopy; HPGe; self-absorption; efficiency
URI: https://ir.uitm.edu.my/id/eprint/34617

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34617

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