ARTÍCULO
TITULO

The Characterization and Optimization of an Underwater Gamma-Ray Detection System (DUGS)

Jacques Bezuidenhout    
Rikus R. le Roux and Kennedy K. Kilel    

Resumen

Sedimentation can cause numerous problems in rivers, estuaries, harbors, and coastal areas. It is therefore important to trace and model the movement of sediments. The natural physical, chemical, and biological components of the aquatic sediment generally relate to these features in its terrestrial catchment area. It consequently contains the naturally occurring radionuclides of thorium, uranium, and potassium, which can be used as tracers. To achieve this aim, a delta underwater gamma system (DUGS) was developed to map the radionuclides in aquatic sediments. Though the system has been tested for radiometric accuracy, the low concentrations of natural radionuclides in aquatic sediments and the attenuation by the water and detector enclosure necessitated an evaluation to determine the detection efficiency of the detector along with optimal operational parameters. These included spectra accumulation time and underwater speed. The DUGS was consequently used to determine and optimize these parameters for mobile measurement of aquatic sediments. The acquired gamma spectra were also analyzed using full spectrum and energy window analysis to determine the optimal method for extracting the activity concentrations of the nuclides in the sediments.

 Artículos similares

       
 
Jinze Sun, Shujie Liu, Jiwei Zhang, Qinghao Tian, Zhijie Yu and Zuodong Xie    
As a widely used material in underground engineering, clay?cement slurry grouting is known for its initial poor anti-seepage and filtration capacity, the low strength of the resulting stone body, and its tendency towards brittle failure. To explore effic... ver más
Revista: Applied Sciences

 
Rehab O. Abdel Rahman, Ahmed M. El-Kamash and Yung-Tse Hung    
Permeable concrete is a class of materials that has long been tested and implemented to control water pollution. Its application in low-impact development practices has proved its efficiency in mitigating some of the impacts of urbanization on the enviro... ver más
Revista: Water

 
Gaetano Di Mino, Vineesh Vijayan, Shahin Eskandarsefat, Loretta Venturini and Konstantinos Mantalovas    
Although the benefits of asphalt recycling have been scientifically proven and several best practices are being implemented, further research is required in specific and specialized areas. One of these circumstances is the recycling of Reclaimed Asphalt ... ver más
Revista: Infrastructures

 
Jean Flores-Gómez, Mario Villegas-Ruvalcaba, José Blancas-Flores and Juan Morales-Rivera    
In this study, a novel chitosan?resole?pectin aerogel (CS?R?P) was created from a sol?gel reaction with a solution of Cs and P with resole by a freeze-drying technique, and this adsorbent was proposed for the removal of methylene blue (MB). In addition, ... ver más
Revista: ChemEngineering

 
Carmen Tesoro, Maria Assunta Acquavia, Barbara Giussani, Giuliana Bianco, Raffaella Pascale, Filomena Lelario, Rosanna Ciriello, Angela Capece, Rocchina Pietrafesa, Gabriella Siesto and Angela Di Capua    
For oenological products, most of the intrinsic and extrinsic drivers of perceived quality are associated with specific aromatic profiles. Aromatic diversity has been recognized as a central element in perceived quality as it is able to transmit the comp... ver más
Revista: Applied Sciences