Source term estimates of radioxenon released from the BaTek medical isotope production facility using external measured air concentrations.

BATAN Teknologi (BaTek) operates an isotope production facility in Serpong, Indonesia that supplies (99m)Tc for use in medical procedures. Atmospheric releases of (133)Xe in the production process at BaTek are known to influence the measurements taken at the closest stations of the radionuclide network of the International Monitoring System (IMS). The purpose of the IMS is to detect evidence of nuclear explosions, including atmospheric releases of radionuclides.

National comparison of activity measurements of ¹³¹I, ⁶⁰Co, and ¹³³Ba in Indonesia.

National comparisons of radioactivity measurements of (131)I and (60)Co (in 2010) and of (133)Ba (in 2011) were carried out within the framework of the National Radiation Metrology Laboratory Program of Indonesia, coordinated by PTKMR-BATAN. Eleven laboratories took part in the comparison, and all measurements were made using gamma spectrometry, on point sources with an activity between 2000Bq and 6000Bq. Several laboratories reported values which were more than 10% different from the reference value for (131)I and (133)Ba.

Direct measurement of ⁶⁰Co and ¹²⁵I activity by the sum-peak method in PTKMR-BATAN.

The sum-peak method was successfully applied to the determination of the activity of (60)Co and (125)I sources measured by HPGe and well-type NaI(Tl) detectors in PTKMR-BATAN. The result of the (60)Co activity agrees with the activity value measured by using a calibrated ionization chamber within a range of about 0.35-0.

Standardization of 125I and 109Cd by the photon-photon coincidence method in PTKMR-BATAN.

A photon-photon coincidence system was constructed for the standardization of (125)I and (109)Cd in PTKMR-BATAN, Indonesia. Two NaI(Tl) detectors of 76 mm diameter × 6mm thickness with 0.5mm aluminum window were used, which were positioned approximately symmetrically to the source holder.

Performance evaluation of commercial radionuclide calibrators in Indonesian hospitals.

Dose calibrator is one of the supporting equipments in the field of nuclear medicine. At the hospitals, dose calibrator is used for activity measurement of radiopharmaceutical before it is administered to patients. Comparison of activity measurements of (131)I and (99m)Tc with dose calibrators was organized in Indonesia during 2007-2010 with the the aim of obtaining information dose calibrator performance in the hospitals.