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本文论述铀和钍矿石的一种物理分析方法。选择了三段伽玛能谱用于测量。使用13/4(直径)×1/4(厚)时的碘化钠晶体,测定第一段伽玛能谱(自52至108KeV)的计数率。位于第二段(自560至660KeV)和第三段(自2.46至2.76MeV)内的伽玛射线,用3×3时的晶体测定。该法可用于铀钍混合矿石,也适用于不平衡的铀矿石。用最小二乘法求出铀和钍的含量、测定误差以及平衡系数。标定常数是用5个标准样品测定的。
This article discusses a physical analysis of uranium and thorium ores. Three gamma spectra were selected for measurement. The count rate of the first gamma spectrum (from 52 to 108 KeV) was determined using sodium iodide crystals at 13/4 (diameter) × 1/4 (thickness). Gamma rays located in the second segment (from 560 to 660 KeV) and the third segment (from 2.46 to 2.76 MeV) were measured with crystals at 3x3. The method can be used for uranium-thorium mixed ore, but also for unbalanced uranium ore. The least square method was used to determine the content of uranium and thorium, the determination of the error and the equilibrium coefficient. The calibration constant is determined using five standard samples.