Evaluation of Monte Carlo-based calibrations of HPGe detectors for in situ gamma-ray spectrometry

Boson, Jonas; Plamboeck, Agneta H.; Ramebäck, Henrik; Ågren, Göran I.; Johansson, Lennart

doi:10.1016/j.jenvrad.2009.06.006

Cited by 19 publications

(7 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All the computations presented in this work were carried out for a detector that was characterized by careful measurements (Boson et al, 2008) and applied for in situ assessment of 137 Cs deposition (Boson et al, 2009).…”

Section: Validationmentioning

confidence: 99%

“…In all cases the results of GESPECOR were consistent with the results of GEANT 4, but the tests were less powerful, because the statistical uncertainty for GEANT 4 computations was not better than 6% in these additional cases. Boson et al (2009) reported a detailed study of 137 Cs deposition after Chernobyl accident in several sites in Sweden. They performed both in situ measurements and laboratory assessment of soil samples.…”

Section: Comparison Between Geant 4 and Gespecor Calculationsmentioning

confidence: 99%

“…They performed both in situ measurements and laboratory assessment of soil samples. The activity profile in each site in the in situ measurements was approximated by the uniform slab model with 3 slabs; the thickness, density and activity of each slab are given in the paper (Boson et al, 2009). The in situ measurements were analyzed using semi-empirical and Monte Carlo based calibrations of the detector.…”

Section: Comparison Between Geant 4 and Gespecor Calculationsmentioning

confidence: 99%

“…The same data were analyzed by Carrazana González et al (2012) using the efficiencies computed with the DETEFF Monte Carlo code. We applied GESPECOR for the computation of the efficiency in the case of site 4 ( Table 3 in the paper of Boson et al (2009)), comprising three slabs with thicknesses (2.5 70.73) cm, (5.4 71.2) cm and (11.1 72.6) cm and relative activities 0.09 70.01, 0.59 70.07 and 0.32 70.04 respectively. The slabs are assumed to have the same composition (fractions by weight: 1.1% H, 1.3% C, 55.8% O, 7.1% Al, 31.5% Si, 3.2% Fe) but different densities, correspondingly (0.32 70.12) g cm −3 , (1.047 0.11) g cm −3 and (1.297 70.09) g cm −3 .…”

Section: Comparison Between Geant 4 and Gespecor Calculationsmentioning

confidence: 99%

See 3 more Smart Citations

Monte Carlo simulation by GEANT 4 and GESPECOR of in situ gamma-ray spectrometry measurements

Chirosca

Șuvăilă

Sima

2013

Applied Radiation and Isotopes

View full text Add to dashboard Cite

Section: Validationmentioning

confidence: 99%

Section: Comparison Between Geant 4 and Gespecor Calculationsmentioning

confidence: 99%

Section: Comparison Between Geant 4 and Gespecor Calculationsmentioning

confidence: 99%

Section: Comparison Between Geant 4 and Gespecor Calculationsmentioning

confidence: 99%

See 2 more Smart Citations

Monte Carlo simulation by GEANT 4 and GESPECOR of in situ gamma-ray spectrometry measurements

Chirosca

Șuvăilă

Sima

2013

Applied Radiation and Isotopes

View full text Add to dashboard Cite

“…At present, the primary method used for in-situ measurement is the Beck method, but the calibration process of the Beck method is complicated and time-consuming 5 . Some subsequent studies have optimized the in-situ measurement methods 6 – 19 , including a lot of work applied to geological surveys, some applied to accident emergency conditions, and some studies on in-situ measurements on the seabed. The radioactivity of the monitored objects is low in geological surveys, and the depth distribution of radionuclides has an essential impact on the measurement results.…”

Section: Introductionmentioning

confidence: 99%

In-situ γ-ray analysis of ground surface radioactivity using portable HPGe γ spectrometer

Wu¹,

Wang²,

Sun³

et al. 2022

Sci Rep

View full text Add to dashboard Cite

As essential high-end equipment for nuclear emergency monitoring, the portable HPGe γ spectrometer currently lacks supporting in-situ measurement methods, limiting its role and value in emergency missions. For this practical problem, this paper studies the measurement of ground surface radioactivity by portable HPGe γ spectrometer in nuclear emergency monitoring in view of the particularity of nuclear emergency source items. Firstly, the detection efficiency of point sources at different horizontal distances when the spectrometer is installed at the height of 1 m from the center of the detector to the ground is calculated. Secondly, the concept of effective contribution distance is defined and analyzed. Thirdly, the point source detection efficiency is obtained using the numerical integration method of calculation. Integrate to calculate the detection efficiency of the surface source, and then calculate the radioactive surface activity of the surface. Finally, the effectiveness of the method is verified through experiments.

show abstract

Efficiency Calculation of Gamma Detectors byMonteCarlo Methods

Sima

2012

Encyclopedia of Analytical Chemistry

View full text Add to dashboard Cite

γ‐Ray spectrometry is a powerful nondestructive multielemental analysis technique. Its quantitative application requires efficiency calibration. Among the methods available for the computation of the efficiency calibration curve, Monte Carlo simulation is ever increasing in popularity. The need for Monte Carlo simulation is the consequence of the inability of experimental calibration to cope with the broader scope and measuring configurations (shape, volume, and matrices of the samples), with the enhanced coincidence‐summing nuclide specific effects (favored by the current tendency to use high‐efficiency detectors) and with the desired performance parameters (detection limit and uncertainty) met in present‐day applications of γ‐ray spectrometry. The availability of a variety of Monte Carlo packages that can be applied to efficiency computation, several of them user friendly indeed, enlarged the class of potential users of this method. While experimental calibration remains the preferred method in the case of point sources and specific volume sources, such as solutions, it is the flexibility of Monte Carlo calculation that can provide a comprehensive calibration of γ‐ray detectors for a broad range of applications. In this article, the principles of Monte Carlo method are introduced, the applications to detector simulation are presented, and the solutions of typical problems in the calibration of γ‐spectrometry systems are reviewed.

show abstract

Evaluation of Monte Carlo-based calibrations of HPGe detectors for in situ gamma-ray spectrometry

Cited by 19 publications

References 11 publications

Monte Carlo simulation by GEANT 4 and GESPECOR of in situ gamma-ray spectrometry measurements

Monte Carlo simulation by GEANT 4 and GESPECOR of in situ gamma-ray spectrometry measurements

In-situ γ-ray analysis of ground surface radioactivity using portable HPGe γ spectrometer

Efficiency Calculation of Gamma Detectors byMonteCarlo Methods

Contact Info

Product

Resources

About