A research on calibrating environmental radiometer through standard model

The paper presents experimental research for possibility of calibrating environmental radiometer using the existing models of mineral prospecting. The measurement results obtained from different kinds of radiometers at the 15 models has slight differences from each other 2%-3%. The spectrum range obtained from these models is larger than that from the point source. It is dominated by the scattered energy under 600 keV and much similar to the environmental spectrum. From the formulas derived from the 15 models and practice measurement at a typical site, it is concluded that to calibrate environmental radiometer using these models is possible and economical