[Quantitative measurement of 125I with NaI(Tl) scintillation survey meter].
This paper describes a NaI(Tl) scintillation survey meter which can quantify 125I on a contaminated surface in situ. This survey meter has four inherent windows; 20-45 keV the singles photopeak region, 45-80 keV the sum photopeak region, 20-80 keV the total photopeak region, and 80 keV-. The activity was calculated based on the sum peak method. The calculated activity of a point source agreed with the standardized source activity within an uncertainty of about 10% both up to the distance of 3 cm from the detector surface along the axis of the detector and on the detector surface. The activity of a simulated plate source also agreed with the source activity within the same uncertainty.
D004785:Environmental Pollutants / Q000032:analysis*; D007457:Iodine Radioisotopes / Q000032:analysis*; D012588:Scintillation Counting / Q000295:instrumentation / Q000379:methods*; D012974:Sodium Iodide; D013793:Thallium
D004785:Environmental Pollutants; D007457:Iodine Radioisotopes; D013793:Thallium; D012974:Sodium Iodide