Improvement of passive shielding to reduce background components to determinate radioactivity at low energy gamma rays
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T. T. Thanh
Abstract
This paper describes a new system that has the ability to reduce background components to apply for environmental studies. This system uses gamma spectrometry with semi-empirical self–absorption correction and practical method for routine measurements of the mass activity radionuclides at low energy such as 210Pb (46.5 keV), 234Th (63.3 keV) and 226Ra (186.2 keV). The reliability and precision of proficiency test must pass for final scores all the analytical determinations of received “acceptable” for all radionuclides. Our work shows an experiment developed for the calculation of self-absorption correction in that case that the sample's chemical composition is unknown.
Kurzfassung
In diesem Beitrag wird ein neues Experiment vorgestellt, mit dessen Hilfe die Hintergrundstrahlung bei Versuchen mit niedrigenergetischer Gammastrahlung auch ohne genaue Kenntnis der Probenzusammensetzung die unerwünschte Hintergrundstrahlung abschirmt. Dabei wird auf die Gammaspektrometrie mit semiempirischer selbstabsorbierender Korrektur für die Radionuklide 210Pb (46.5 keV), 234Th (63.3 keV) and 226Ra (186.2 keV) zurückgegriffen.
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© 2014, Carl Hanser Verlag, München
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- Simulation of thermal fluid dynamics in parabolic trough receiver tubes with direct steam generation using the computer code ATHLET
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- Experimental study of flow inversion in MTR upward flow research reactors
- Technical Note
- The effect of burn up on the kinetic parameters for a pressurized water reactor fueled by MOX using MCNPX code
- Diffusion length calculations for one-speed neutrons in a slab with backward, forward and linear anisotropic scattering
- Improvement of passive shielding to reduce background components to determinate radioactivity at low energy gamma rays
- A study of the energy enhancement of electron in radio frequency (RF) linear accelerator of iris loaded waveguards
- Age-dependent effective doses for radionuclides uniformly distributed in air
Articles in the same Issue
- Contents/Inhalt
- Contents
- Summaries/Kurzfassungen
- Summaries
- Technical Contributions/Fachbeiträge
- Simulation of thermal fluid dynamics in parabolic trough receiver tubes with direct steam generation using the computer code ATHLET
- Measurement of velocity profiles of nanofluids in laminar channel flow using Particle Image Velocimetry
- Prediction of correlation between two-phase natural circulation flows in heated and unheated channels of a parallel channel system – based on electrical analogy
- Investigation of (n,γ) reactions in fissionable fluids in a hybrid reactor system
- In-pile modelling of nuclear fuel element for the MTR type reactors – Part 2
- One-step synthesis of Pt-reduced graphene oxide composites based on high-energy radiation technique
- Hamming generalized corrector for reactivity calculation
- Experimental study of flow inversion in MTR upward flow research reactors
- Technical Note
- The effect of burn up on the kinetic parameters for a pressurized water reactor fueled by MOX using MCNPX code
- Diffusion length calculations for one-speed neutrons in a slab with backward, forward and linear anisotropic scattering
- Improvement of passive shielding to reduce background components to determinate radioactivity at low energy gamma rays
- A study of the energy enhancement of electron in radio frequency (RF) linear accelerator of iris loaded waveguards
- Age-dependent effective doses for radionuclides uniformly distributed in air
