Simulation approach to coincidence summing in spectrometry

Dziri, S.; Nourreddine, A.; Sellam, A.; Pape, A.; Baussan, E.

doi:10.1016/j.apradiso.2011.09.014

Cited by 17 publications

(5 citation statements)

References 7 publications

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“…Simulated results are presented for red brick (ρ = 1.63 g•cm −3 ) with a radium-equivalent activity of 246 ± 17 Bq•kg −1 . This activity corresponds to a γ-ray emission rate for 226 Ra and its daughters, which is taken into consideration in the simulation by the WGT card [10]. The dose rate varies as d −2 from any point of emission to any other point inside the room.…”

Section: Mcnpx Simulationmentioning

confidence: 99%

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Experimental and Simulated Effective Dose for Some Building Materials in France

Dziri

Nachab²,

Nourreddine³

et al. 2013

WJNST

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The specific radioactivity of several building materials used in France, which is considered a direct exposure to radiation, has been assessed by γ-ray spectrometry. Corrected for coincidence summing and self-absorption effects, the values for ²²⁶Ra, ²³²Th and ⁴⁰K were in the ranges 4 - 56, 3 - 72 and 9 - 1136 Bq·kg^-1, respectively. The samples were found to have radium-equivalent activities between 5 and 245 Bq·kg^-1. Values of 0.02 - 0.67 for the external and 0.03 - 0.82 for the internal hazard indexes were estimated. The calculated absorbed dose in air agrees closely with MCNPX simulations. The conversion of absorbed dose to annual effective dose gave values between 0.03 - 1.09 mSv·y^-1. All these values are below action limits recommended by the International Commission on Radiological Protection. The materials examined would not contribute a significant radiation exposure for an occupant and thus are acceptable for construction.

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Section: Mcnpx Simulationmentioning

confidence: 99%

“…The building materials studies were samples offered by a large supplier in Strasbourg. For an accurate estimation of the absorbed dose (KERMA), coincidence summing and self-absorption corrections [10,11] have been taken into consideration.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Simulated Effective Dose for Some Building Materials in France

Dziri

Nachab²,

Nourreddine³

et al. 2013

WJNST

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“…It was remarkable for low energies, where the efficiency decreases with increasing in filling heights. A reduction of the filling height would diminish the matrix effects [5]. Finally, the efficiency curve can be used in activities evaluation for the environmental measurements, but to improve accuracy, other corrections must be done such as self-attenuation, density and sample height filling effects.…”

Section: Resultsmentioning

confidence: 99%

“…The detector full energy peak efficiency (FEPE) calibration is always required to reach accurate measurements and still represents a subject of considerable interest for the gamma spectrometry [1][2][3][4][5][6][7][8][9][10]. In this work, the measurements were carried out with a well highpurity germanium (HPGe) detector, situated in the underground Laboratory of Modane (LSM, located along the Frejus Tunnel Rood in Savoy) where the reachable sensitivity depends on the ultra-low background.…”

Section: Introductionmentioning

confidence: 99%

Well GeHP detector calibration for environmental measurements using reference materials

Tedjani

Mavon

Belafrites

et al. 2016

Nuclear Instruments and Methods in Physics Research Section A:

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International audienceA well-type detector installed in the Modane underground Laboratory (LSM) can combine both low background and high detection efficiency and it is well suited for the analysis of small amounts of environmental samples. Reference materials such as IAEA-447 (moss-soil), IAEA-RG-Th1 and IAEA-RG-U1 were used for the detector calibration, owing to a chemical composition close to those of the environmental samples. Nevertheless , the matrix effects and the true coincidence summing effects must be corrected from the full energy peak efficiency (FEPE). The FEPE was performed for a wide range of energy by a semi-empirical method using Monte Carlo simulation (MCNP6), intended for environmental measurements such as lake sediments dating. In the well geometry, the true coincidence summing effects could be very important and correction factors have been computed in three different ways

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“…MCNP (Monte Carlo team 2013) , GEANT (Brun et al 1994) o PENELOPE (Salvat et al 2011), entre otros son herramientas de Monte Carlo utilizadas para la calibración en eficiencia que se han utilizado en combinación con otros códigos que simulan el esquema de desintegración. En otros trabajos, estos códigos de Monte Carlo se han empleado en solitario comparando las eficiencias simuladas con las experimentales atribuyendo la diferencia entre las cuentas netas del foto-pico como el efecto de suma por coincidencia (Dziri et al 2012). Este último método, en el que se compara la eficiencia simulada con la experimental requiere disponer de un modelo de caracterización del detector prácticamente perfecto para asegurar que las diferencias encontradas únicamente sean debidas al efecto de suma por coincidencia.…”

Section: Figura 224 Respuesta Eléctrica Del Cristal De Germanio Delunclassified

Desarrollo de Modelos de Simulación por Monte Carlo como Apoyo a la Medida de Radiactividad Ambiental en Operación Rutinaria y de Emergencias

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Simulation approach to coincidence summing in spectrometry

Cited by 17 publications

References 7 publications

Experimental and Simulated Effective Dose for Some Building Materials in France

Experimental and Simulated Effective Dose for Some Building Materials in France

Well GeHP detector calibration for environmental measurements using reference materials

Desarrollo de Modelos de Simulación por Monte Carlo como Apoyo a la Medida de Radiactividad Ambiental en Operación Rutinaria y de Emergencias

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