自贡恐龙化石放射性水平剖析

Analysis of Radiation Level on Dinosaur Fossil in Zigong

首次调查了自贡恐龙化石及恐龙化石保护区内环境的放射性水平,结果发现,恐龙化石及其保护区内土壤、岩石的γ辐射剂量率,以及放射性核素^(232)Th、^(40)K的比活度,处于自贡市放射性本底值范围内,但恐龙化石中另两种放射性核素^(238)U、^(226)Ra的比活度,分别比同层岩石中的高26.6倍和29.2倍。

Study on radiation level of dinosaur fossil and environment in conservation zone in Zigong, Sichuan has been done. The results showed that the γ radiation dose and radioactivity strength of 232Th and 40K in dinosaur fossil, siol and rock in the conservation zone were within the limits of radioactive background value in Zigong. Radioactivity strength of 238U, 226Ra in dinosaur fossil were 26.6 and 29.2 times higher than the rock of same layer respectively.