Correction of the chemical composition effect on the activity measurement of gamma emitters in environmental samples at low energy

2019 ◽  
Vol 151 ◽  
pp. 81-88
Author(s):  
F. Gharbi ◽  
A. Alshoaibi ◽  
I. Essouissi ◽  
S.M. Metwally
Keyword(s):  
Chemical Composition ◽  
Environmental Samples ◽  
Low Energy ◽  
Activity Measurement ◽  
Composition Effect

Chemical composition effect on VVER-1000 RPV weld metal thermal aging

2015 ◽  
Vol 465 ◽  
pp. 540-549 ◽  
Author(s):  
B.A. Gurovich ◽  
A.A. Chernobaeva ◽  
D.Yu Erak ◽  
E.A. Kuleshova ◽  
D.A. Zhurko ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Weld Metal ◽  
Thermal Aging ◽  
Composition Effect

Development of a New Method to Reduce the Measurement Uncertainties in Gamma-Ray Spectroscopy of Bituminized Radioactive Waste Drums

2001 ◽  
Author(s):  
Bertrand Perot ◽  
Jean-Luc Artaud ◽  
Bernard Chabalier ◽  
Pierre Bonifay ◽  
Sébastien Bernard ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Chemical Composition ◽  
Radioactive Waste ◽  
Experimental Validation ◽  
Gamma Ray ◽  
Gamma Spectroscopy ◽  
Low Energy ◽  
The Matrix ◽  
Measurement Uncertainties ◽  
Waste Drums

Abstract The determination by gamma spectroscopy of the activity of radionuclides emitting low energy radiation (less than 200 keV) in bituminized waste drums can be affected by significant uncertainty if the chemical composition of the matrix is not well-known. Indeed, some elements with high atomic numbers (Z) can significantly modify the absorption of these radiations. The CEA has therefore studied, using numerical simulation, the feasibility of a method which would take into account this effect, based on the analysis of the gamma spectra continuum due to Compton scattering (1). This article describes an experimental validation of the simulations and of the method.

The effect of source chemical composition on the self-attenuation corrections for low-energy gamma-rays in soil samples

2010 ◽  
Vol 68 (2) ◽  
pp. 360-363 ◽  
Author(s):  
J. Carrazana González ◽  
N. Cornejo Díaz ◽  
M. Jurado Vargas ◽  
E. Capote Ferrera
Keyword(s):  
Chemical Composition ◽  
Gamma Rays ◽  
Soil Samples ◽  
Low Energy ◽  
The Self ◽  
Energy Gamma
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