The Ionizing Radiation Metrology Group conducts research for the establishment and dissemination of national measurement standards for ionizing radiation. This group develops standards for medical radiation, radiation/radioactivity, and neutron measurement and develops technologies for precision radiation measurements, calibration of radiation measuring instruments, and radiation equipment testing and verification. Furthermore, it offers legal metrology support and radiation equipment calibration/testing services for hospitals (clinics), local environmental analysis institutions, research centers/universities that use radiation applications, and nuclear power plants. These are in line with the group's purpose to support radiation safety/measurement quality management in medicine, industry, research, and academia.
Current R&D Projects
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1
Mono-energetic neutron measurement standards
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2
Absolute measurement of absorbed dose to water in medical radiation field
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3
Diagnostic radiation dose measurement standards and PET/CT imaging certified reference materials
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4
Measurement standards for radioactive gases, hard-to-measure radionuclides and radon radioactivity with international equivalence
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5
Development and organization of technology related to radioactivity calibration and proficiency testing for measurement institutions
Recent R&D Highlights
- Measurement standards of absorbed dose to water for clinical linear accelerator high energy electrons beams (18, 20 MeV, uncertainty 0.9 %, k = 2)
- Metrological traceability and precision non-invasive measurement techniques for mAs of chest x-rays (uncertainty 1.3 %, k = 2)
- Establishment of a primary standard equipment for airborne radioactivity and the measurement standard (Kr-85, uncertainty 0.88 %, k = 2)
- Establishment of the primary standard of artificial radionuclides of Cs-134, Cs-137 (uncertainty ≤ 1 %, k = 2)
- Development of absolute measurement technique for manganese sulphate bath efficiency for neutron emission rate measurement (uncertainty 2.2 %, k = 2)
- Development of an associated particle detection equipment for 14.8 MeV mono-energetic neutrons (alpha 5.486 MeV, energy resolution 0.4 %)
Introducing Teams in a Group
Neutron Metrology Team
The Neutron Metrology Team actively works to establish and disseminate neutron-related national measurement standards. The team develops monoenergetic neutron measurement standards, thermal neutron measurement standards, as well as isotopic neutron source emission rate measurement technology and neutron energy spectrum measurement technology. Additionally, the team provides calibration and testing service for the neutron field calibration/testing service.
Key Research Area
- Establishment of monoenergetic neutron measurement standards
- Establishment of measurement standards for isotopic neutron source emission rate
- Establishment of thermal neutron measurement standards and development of neutron dosimeter sensitivity calibration technology
- Development of neutron energy spectrum measurement technology
- Neutron field calibration/testing services
Dosimetry Metrology Team
The Dosimetry Metrology Team conducts research for the development and dissemination of dosimetry measurement standards for the radiation protection and medical radiation fields. The team develops primary standards based on precision measurement technology for absorbed dose to water and air kerma. Additionally, the team ensures radiation dosage metrological traceability and provides radiation equipment calibration/testing services. Furthermore, the team focuses on R&D regarding imaging standards and certified reference materials for the diagnostic radiation field.
Key Research Area
- Development of industrial high-dose precision measurement technology and standards
- Development of absolute absorbed dose to water measurement technology for the medical radiation field
- Development of diagnostic radiation dose measurement standards and PET/CT imaging certified reference materials
Radioactivity Metrology Team
The Radioactivity Metrology Team is tasked with the development, dissemination, and management of national standards regarding the SI base unit of radioactivity, Bq. The team's research also encompasses the development of radioactivity measurement standards for radioactive gases including radon. Furthermore, the team secures international equivalence, provides calibration/testing services for the radioactivity measurement field, and develops and disseminates various certified reference materials for radioactivity. Through its work, the team aims to contribute to improving radioactivity measurement reliability in Korea and overseas.
Key Research Area
- Establishment of measurement standards for radioactive gases, hard-to-measure radionuclides, and radon radioactivity measurement standards with international equivalence
- Development of measurement technology and calibration/testing services for the radioactivity field
- Development and dissemination of radioactivity certified reference materials
- Development and organization of technology related to radioactivity calibration and proficiency testing for measurement institutions
About Other Groups
