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Analysis of induced radionuclides in low-activation concrete (limestone concrete) using the 12 GeV proton synchrotron accelerator facility at KEK
- Source :
- Radiation Protection Dosimetry. 116:647-652
- Publication Year :
- 2005
- Publisher :
- Oxford University Press (OUP), 2005.
-
Abstract
- 22Na is one of the long-lived radionuclides induced in shielding concrete of a beam-line tunnel of a high-energy particle accelerator facility and poses a problem of radiation wastes at the decommissioning of the facility. In order to estimate the 22Na concentration induced in shielding concrete, chemical reagents such as NaHCO3, MgO, Al203, SiO2 and CaCO3 were irradiated at several locations in the beam-line tunnel of the 12 GeV proton synchrotron accelerator at KEK, and the 22Na concentrations induced in those chemical reagents were measured. Low-activation concrete made up of limestone aggregates was also irradiated by secondary particles in the beam-line tunnel and the long-lived radionuclide, such as 22Na, concentrations induced in the concrete were measured. It was confirmed that 22Na concentrations induced in Mg, Al, Si and Ca were lower than that in Na, and that 22Na concentrations induced in the low-activation concrete was lower than those induced in ordinary concrete made up of sandstone aggregates.
- Subjects :
- Materials science
Proton Synchrotron
Materials testing
Radiation
Radiation Dosage
Calcium Carbonate
law.invention
Nuclear physics
Radiation Protection
Japan
law
Materials Testing
Radiology, Nuclear Medicine and imaging
Neutron
Irradiation
Radiometry
Neutrons
Radioisotopes
Radionuclide
Radiological and Ultrasound Technology
Construction Materials
Radiochemistry
Public Health, Environmental and Occupational Health
Particle accelerator
General Medicine
Equipment Failure Analysis
Electromagnetic shielding
Particle Accelerators
Synchrotrons
Subjects
Details
- ISSN :
- 17423406 and 01448420
- Volume :
- 116
- Database :
- OpenAIRE
- Journal :
- Radiation Protection Dosimetry
- Accession number :
- edsair.doi.dedup.....2f85f2680c82097ba9b7f1fceff40bd0