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从空中确定岩石中铀、钍和钾含量的精度在很大程度上取决于航空γ谱仪测量道放大的稳定性。放大状态的检查是根据矿石标准源在能谱仪各道造成的计数率增量来进行的。矿石标准源是装满铀、钍矿石的金属盒。到现在为止所采用的检查方法是:在航测开始前和航测结束后,在地表以上700—800米高度上用矿石标准源进行检查测量,并在航测过程中检查1—2次。在整个6小时飞行时间中检查时间占去40—50分钟。由
The accuracy of determining uranium, thorium and potassium levels in rocks from the air depends to a large extent on the stability of the aeronautical gamma spectrometer measurement tract amplification. Magnified inspection is based on the ore standard source in the spectrometer each channel count rate increments. Ore standard source is filled with uranium, thorium ore metal box. Up to now, the inspection method used is: before the beginning of aerial survey and after the end of aerial survey, inspect and measure with ore standard source at the altitude of 700-800 meters above the earth’s surface and check 1-2 times during the aerial survey. In the entire 6-hour flight time to check the time accounted for 40-50 minutes. by