Division of Ionizing Radiation

Division of Ionizing Radiation

Overview

Division of Ionizing Radiation Metrology is responsible for establishment of national standards in the fields of radioactivity, dosimetry and neutron measurements, maintenance of international equivalency through the participation of BIPM and APMP key comparisons, dissemination of national standards by calibration service and radioactive reference materials and development of advanced measurement technology to improve the measurement accuracy. It dedicates to fulfill the mission to satisfy the needs for measurement and standard in medicine...

Director's Greeting

Considerable progress has been made in metrology of ionizing radiation recently. The division has established a value tracing system to meet the nation’s demand for ionizing radiation applications. It has established air kerma primary standards for (10~60)kV X-ray, (60~250)kV X-ray, and 60Co γ ray, 4πβ(LS)-γ primary standard and 4πα-4πβ low background primary standard for radioactivity high accuracy measurement It has participated in international value comparison activities including BIPM.RI(I)-K1, BIPM.RI(I)-K3, CCRI.RI(II)-H-3 and BIPM....

News and Events

  • BIPM Comparison Work for 99mTc Took Place in NIM

    In 2012, the fourth comparison of activity measurements of 99mTc using Transfer Instrument of the System of International Reference (SIRTI) took place at National Institute of Metrology (NIM), China. An ampoule containing about 70 kBq of 99mTc tra...

  • Prof. Carneiro Visited the Division

    Prof. Kim Carneiro, president of CCRI, professor of Technical University of Denmark, visit laboratories of ionizing radiation division. The guest talked about cooperation between NIM and BIPM in the field of dosimetry of accelerator, the BIPM.RI(I...

  • Dr. Wang Kun Attended World Congress on MPBE

    Dr. Wang Kun took part in the World Congress on Medical Physics and Biomedical Engineering from May 26 to 31, 2012 and gave a presentation titled Primary Standard in the Traceability System for Radiotherapy in China.

  • Dr. Meghzifene Visited the Division

    Dr. Ahmed Meghzifene, section head of Dosimetry and Medical Radiation Physics, International Atomic Energy Agency, visited NIM on 25th May 2012. During the visit, the guest has discussed cooperation with Division of I&R Metrology, NIM, member...

  • Air Kerma Primary Standards Passed Verification

    Air kerma primary standards for (10~60)kV X-rays, (60~250)kV X-rays and 60Co γ-ray, were authorized by General Administration of Quality Supervision, Inspection and Quarantine of P.R.C on 21st March, 2012. For X-rays and γ-ray respectively, the st...