Gamma backscattering analysis of flaw types and orientation based on Monte Carlo GEANT4 simulations

Wirawan, Rahadi; Angraini, Lily Maysari; Qomariyah, Nurul; Waris, Abdul; Djamal, Mitra

doi:10.1016/j.apradiso.2019.108924

Cited by 7 publications

(5 citation statements)

References 16 publications

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“…×3 in. as in the previous research [17]. The density and composition of the pumice from the x-ray diffraction spectroscopy test are used to define the material composition variable in the simulation, besides its dimension.…”

Section: Methodsmentioning

confidence: 99%

“…where I(E) is the gamma-ray intensity that penetrates the pumice block, Is(E) is the intensity gamma-ray source detected without the presence of pumice block, and r is the thickness of pumice block [17]. The effectiveness of pumice in absorbing the photon also can be analyzed from the radiation protection efficiency (RPE) parameter by the following formula [5].…”

Section: Methodsmentioning

confidence: 99%

“…The MC simulation predicts the interaction results of photon and material based on probability density functions through random number generation. This simulation is quite effective and widely employed successfully, such as in the interrogation of experimental results and validation of bulk-material irradiation [15], wood density analysis [16], analysis of the presence and orientation of slits [17], photon absorption [18], and analyzing polymer and plastic shielding properties [19]. The numerical Monte Carlo (MC) simulation that can be employed is GEANT4.…”

Section: Introductionmentioning

confidence: 99%

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Monte Carlo GEANT4 Simulation Approach in Analyzing Radiation Shielding Parameter of Lombok Pumice

et al. 2022

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The linear attenuation coefficient (LAC), mean free path (MFP), half-value layer (HVL), and the radiation protection efficiency (RPE) parameters of Lombok pumice powder from 3 different regions (Ijobalit, Setangi beach, and Lingsar) have been analyzed. The radiation parameter analysis was carried out to determine the pumice that potential as a raw material of radiation shielding composite. The Monte Carlo simulation using the GEANT4 toolkit was applied to analyze those parameters using a gamma-ray transmission measurement for the photon energies of 57Co, 133Ba, 54Mn, 137Cs, 60Co, 65Zn, 22Na and 40K. The GEANT4 simulation results were compared to the XCOM theoretical calculation and show that the linear attenuation coefficient parameter has a good agreement with the XCOM results based on the determination coefficient of the correlation graph (R2 = 0.998) between those 2 approaches methods. Setangi beach pumice has a smaller LAC parameter than Ijobalit pumice and Lingsar pumice. The MFP and HVL parameter of the Setangi beach pumice indicate the absorption ability of gamma photons is low. In the low gamma energy 0.122 MeV, Ijobalit pumice and Lingsar pumice have more than 50 % RPE and are better used as a raw material of radiation shielding composite. HIGHLIGHTS New lead-free shielding materials of radiation becomes a critical concern in the investigation of raw shielding material GEANT4 Monte Carlo simulation and XCOM theoretical calculation was conducted to analyse the radiation LAC parameter Radiation parameters analysis of Lombok Pumice show that Ijobalit pumice and Lingsar pumice have more than 50 % RPE and are better used as a raw material of radiation shielding composite GRAPHICAL ABSTRACT

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Monte Carlo GEANT4 Simulation Approach in Analyzing Radiation Shielding Parameter of Lombok Pumice

et al. 2022

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“…They compared their experimental results with the theoretical ones which were obtained from WinXCom, and observed that there is a good agreement between theoretical and experimental results. Wirawan et al [11] performed simulations using Monte Carlo GEANT4 toolkit for analyzing the gamma backscattering of different flaw types and their orientations. Sabharwal et al [12] measured albedo factors for targets of different atomic numbers and various target thicknesses using backscattered gamma photons of 279, 320, 511 and 662 keV.…”

Section: Wwwdergiparkgovtr/tdfdmentioning

confidence: 99%

Experimental Study to Determine the Backscattering, Asymmetry, and Tailing Factors for Some Elements in the Atomic Number Range of 4≤Z≤48 at 59.54 keV Using the Gamma Backscattering Method

Uzunoğlu

2024

Türk Doğa Ve Fen Dergisi

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This experimental study has been carried out by using gamma backscattering method which is a non-destructive method. Some elements which are in the atomic number range of 4≤Z≤48 have been used as backscatterer samples to investigate the variation of backscattering factor, asymmetry factor, and tailing factor with atomic number. These samples were irradiated by γ-rays of 59.54 keV energy emitted from a 10 μCi 241Am point radioactive source. To count the backscattered photons from samples, a high purity germanium detector (HPGe) with a resolution of 182 eV at 5.9 keV and active area of 200 mm2 was used. It was concluded that the count rate and backscattering factor increased with increasing atomic number, but the coherent to backscattering ratio, asymmetry factor, and tailing factor decreased.

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“…It is also used in the characterization of the detector system which is the most important part of the positron emission tomography (PET), etc. GATE runs with Geant4 simulation toolkit which is the validated physics models, complex geometrical volume description and powerful 3D visualization (such as Qt mode) [8,[19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

The Determination of the Total Efficiency for NaI(Tl) Detector by GATE Simulation

Yavuzkanat¹,

Yalçın²,

Güngör³

2019

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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In this study the total efficiency of the NaI(Tl) detector have been calculated by using Geant4 based GATE simulation program. The simulation was performed using point and disc isotropic gamma-ray sources at various distance between source and detector in the photon energy range 50-3000 keV. Results were compared with different analytical and Monte Carlo calculations obtained in the time of the periods 1958-2018. The calculated and simulated data indicated good agreement with finding more sensitive GATE simulation result in the lower energy range from 50 keV to 150 keV.

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Gamma backscattering analysis of flaw types and orientation based on Monte Carlo GEANT4 simulations

Cited by 7 publications

References 16 publications

Monte Carlo GEANT4 Simulation Approach in Analyzing Radiation Shielding Parameter of Lombok Pumice

Monte Carlo GEANT4 Simulation Approach in Analyzing Radiation Shielding Parameter of Lombok Pumice

Experimental Study to Determine the Backscattering, Asymmetry, and Tailing Factors for Some Elements in the Atomic Number Range of 4≤Z≤48 at 59.54 keV Using the Gamma Backscattering Method

The Determination of the Total Efficiency for NaI(Tl) Detector by GATE Simulation

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