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在某地发现地面放射性强度突然增高,严重地影响了放射性测量工作。经研究后,对辐射场的几何形状有以下认识:1.辐射强度在相当大的面积内不均匀地增加,在测区(约20×20公里~2)内,辐射强度的增高为原强度的6至18倍,地面的最高辐射强度为530γ;2.放射性物质仅存在于地表,因为,剥土一米后,辐射强度迅速降低,继续加深后,强度不再有显著的变化;
A sudden increase in the intensity of radioactivity on the ground was found, seriously affecting the radiometric measurement. After the study, the geometry of the radiation field has the following recognition: 1. Radiation intensity in a considerable area of non-uniform increase in the test area (about 20 × 20 km ~ 2), the increase in radiation intensity of the original intensity 6 to 18 times the maximum radiation intensity of the ground 530γ; 2 radioactive material exists only on the surface, because one meter after stripping, the radiation intensity decreased rapidly, continue to deepen, the strength no longer significant changes;