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Robustness of LabSOCS calculating the Ge detector efficiency for the measurement of radionuclides. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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2
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Suárez-Navarro J, Moreno-Reyes A, Gascó C, Alonso M, Puertas F. Gamma spectrometry and LabSOCS-calculated efficiency in the radiological characterisation of quadrangular and cubic specimens of hardened portland cement paste. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2020.108709] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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3
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Coincidence summing corrections factors calculated for volume 152Eu sources in γ-ray spectromtery using Monte Carlo techniques. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07099-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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4
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Coincidence summing correction factors for 238U and 232Th decay series using the Monte Carlo method. Radiat Phys Chem Oxf Engl 1993 2019. [DOI: 10.1016/j.radphyschem.2018.09.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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5
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Giubrone G, Ortiz J, Gallardo S, Martorell S, Bas MC. Calculation of Coincidence Summing Correction Factors for an HPGe detector using GEANT4. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2016; 158-159:114-118. [PMID: 27085040 DOI: 10.1016/j.jenvrad.2016.04.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 03/02/2016] [Accepted: 04/06/2016] [Indexed: 06/05/2023]
Abstract
The aim of this paper was to calculate the True Coincidence Summing Correction Factors (TSCFs) for an HPGe coaxial detector in order to correct the summing effect as a result of the presence of (88)Y and (60)Co in a multigamma source used to obtain a calibration efficiency curve. Results were obtained for three volumetric sources using the Monte Carlo toolkit, GEANT4. The first part of this paper deals with modeling the detector in order to obtain a simulated full energy peak efficiency curve. A quantitative comparison between the measured and simulated values was made across the entire energy range under study. The True Summing Correction Factors were calculated for (88)Y and (60)Co using the full peak efficiencies obtained with GEANT4. This methodology was subsequently applied to (134)Cs, and presented a complex decay scheme.
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Affiliation(s)
- G Giubrone
- Laboratorio de Radiactividad Ambiental, Universitat Politècnica de València, Spain
| | - J Ortiz
- Laboratorio de Radiactividad Ambiental, Universitat Politècnica de València, Spain
| | - S Gallardo
- Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental, Universitat Politècnica de València, Spain.
| | - S Martorell
- Laboratorio de Radiactividad Ambiental, Universitat Politècnica de València, Spain
| | - M C Bas
- Departamento de Estadística e Investigación Operativa Aplicadas y Calidad, Universitat Politècnica de València, Spain
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6
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Guerra JG, Rubiano JG, Winter G, Guerra AG, Alonso H, Arnedo MA, Tejera A, Gil JM, Rodríguez R, Martel P, Bolivar JP. A simple methodology for characterization of germanium coaxial detectors by using Monte Carlo simulation and evolutionary algorithms. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2015; 149:8-18. [PMID: 26188622 DOI: 10.1016/j.jenvrad.2015.06.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 04/18/2015] [Accepted: 06/19/2015] [Indexed: 06/04/2023]
Abstract
The determination in a sample of the activity concentration of a specific radionuclide by gamma spectrometry needs to know the full energy peak efficiency (FEPE) for the energy of interest. The difficulties related to the experimental calibration make it advisable to have alternative methods for FEPE determination, such as the simulation of the transport of photons in the crystal by the Monte Carlo method, which requires an accurate knowledge of the characteristics and geometry of the detector. The characterization process is mainly carried out by Canberra Industries Inc. using proprietary techniques and methodologies developed by that company. It is a costly procedure (due to shipping and to the cost of the process itself) and for some research laboratories an alternative in situ procedure can be very useful. The main goal of this paper is to find an alternative to this costly characterization process, by establishing a method for optimizing the parameters of characterizing the detector, through a computational procedure which could be reproduced at a standard research lab. This method consists in the determination of the detector geometric parameters by using Monte Carlo simulation in parallel with an optimization process, based on evolutionary algorithms, starting from a set of reference FEPEs determined experimentally or computationally. The proposed method has proven to be effective and simple to implement. It provides a set of characterization parameters which it has been successfully validated for different source-detector geometries, and also for a wide range of environmental samples and certified materials.
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Affiliation(s)
- J G Guerra
- Departamento de Física, Universidad de Las Palmas de Gran Canaria, 3501 Las Palmas de Gran Canaria, Spain; Instituto Universitario de Sistemas Inteligentes y Aplicaciones Numéricas en la Ingeniería, Universidad de Las Palmas de Gran Canaria, 3501 Las Palmas de Gran Canaria, Spain.
| | - J G Rubiano
- Departamento de Física, Universidad de Las Palmas de Gran Canaria, 3501 Las Palmas de Gran Canaria, Spain
| | - G Winter
- Instituto Universitario de Sistemas Inteligentes y Aplicaciones Numéricas en la Ingeniería, Universidad de Las Palmas de Gran Canaria, 3501 Las Palmas de Gran Canaria, Spain
| | - A G Guerra
- Departamento de Física, Universidad de Las Palmas de Gran Canaria, 3501 Las Palmas de Gran Canaria, Spain
| | - H Alonso
- Departamento de Física, Universidad de Las Palmas de Gran Canaria, 3501 Las Palmas de Gran Canaria, Spain
| | - M A Arnedo
- Departamento de Física, Universidad de Las Palmas de Gran Canaria, 3501 Las Palmas de Gran Canaria, Spain
| | - A Tejera
- Departamento de Física, Universidad de Las Palmas de Gran Canaria, 3501 Las Palmas de Gran Canaria, Spain
| | - J M Gil
- Departamento de Física, Universidad de Las Palmas de Gran Canaria, 3501 Las Palmas de Gran Canaria, Spain
| | - R Rodríguez
- Departamento de Física, Universidad de Las Palmas de Gran Canaria, 3501 Las Palmas de Gran Canaria, Spain
| | - P Martel
- Departamento de Física, Universidad de Las Palmas de Gran Canaria, 3501 Las Palmas de Gran Canaria, Spain
| | - J P Bolivar
- Departamento de Física Aplicada, Universidad de Huelva, Campus de Excelencia Internacional del Mar (CEIMAR), 21071 Huelva, Spain
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7
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Dababneh S, Al-Nemri E, Sharaf J. Application of Geant4 in routine close geometry gamma spectroscopy for environmental samples. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2014; 134:27-34. [PMID: 24637234 DOI: 10.1016/j.jenvrad.2014.02.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 02/22/2014] [Accepted: 02/24/2014] [Indexed: 06/03/2023]
Abstract
This work examines the utilization of Geant4 to practically achieve crucial corrections, in close geometry, for self-absorption and true coincidence summing in gamma-ray spectrometry of environmental samples, namely soil and water. After validation, different simulation options have been explored and compared. The simulation was used to correct for self-absorption effects, and to establish a summing-free efficiency curve, thus overcoming limitations and uncertainties imposed by conventional calibration standards. To be applicable in busy laboratories, simulation results were introduced into the conventional software Genie 2000 in order to be reliably used in everyday routine measurements.
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Affiliation(s)
- Saed Dababneh
- Department of Physics, Faculty of Science, Al-Balqa Applied University, P.O. Box 2587, Amman 11941, Jordan.
| | | | - Jamal Sharaf
- Department of Physics, Faculty of Science, The University of Jordan, Amman 11942, Jordan
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Determination of full-energy peak efficiency at the center position of a through-hole-type clover detector between 0.05 MeV and 3.2 MeV by source measurements and Monte Carlo simulations. Appl Radiat Isot 2014; 91:97-103. [PMID: 24922554 DOI: 10.1016/j.apradiso.2014.05.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 03/19/2014] [Accepted: 05/14/2014] [Indexed: 11/20/2022]
Abstract
Full-energy peak efficiency at the center position of a through-hole-type clover detector was determined by the measurement of standard sources and by Monte Carlo simulation. The coincidence summing under the large-solid-angle condition was corrected using Monte Carlo calculation based on the specific decay scheme for (133)Ba, (152,154)Eu, and (56)Co. This allowed the peak efficiency to be extended from 0.05 MeV to 3.2 MeV with an approximate uncertainty of 3%.
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9
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Amgarou K, Trocmé M, García-Fusté M, Vanstalle M, Baussan E, Nourreddine A, Domingo C. Characterization of the neutron field from the 241Am-Be isotopic source of the IPHC irradiator. RADIAT MEAS 2013. [DOI: 10.1016/j.radmeas.2012.11.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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