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首页> 外文会议>NATO Advanced Research Workshop on The Environmental Challenges of Nuclear Disarmament Cracow, Poland 9-13 November 1998 >Aspects of the migration of long-lived radionuclides from underground waste repositories
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Aspects of the migration of long-lived radionuclides from underground waste repositories

机译：长寿命放射性核素从地下废物库中迁移的各个方面

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摘要

It is generally agreed that long-lived, high-level radioactive wastes should be disposed in deep-geological formations. To select the optimum rock type for waste disposal, scientists consider formations with minimal groundwater flow. To study the migration rate of the radioactive nuclides, so-called geological analogues are used. The geological analogue is the natural uranium deposit where the production of radionuclides has occurred since its formation. These long-lived radionuclides are in an equilibrium state and their possible migration to the adjacent rock can be calculated and in some cases measured. The natural production of radionuclides, however, also takes place in the rock and must be estimated for establishing the background of particular radionuclides. In this presentation, the physical phenomena involved in the natural production of radionuclides and the results of calculation of their concentration will be discussed.
机译：人们普遍同意，应将长寿命的高放射性废物处置在深层地质构造中。为了选择用于废物处置的最佳岩石类型，科学家考虑了地下水流量最小的地层。为了研究放射性核素的迁移速率，使用了所谓的地质类似物。地质类似物是天然铀矿床，自形成以来就已经产生了放射性核素。这些长寿命放射性核素处于平衡状态，可以计算出它们向邻近岩石的可能迁移，并在某些情况下进行测量。然而，放射性核素的自然产生也发生在岩石中，必须进行估算才能确定特定放射性核素的背景。在本演示中，将讨论放射性核素自然产生所涉及的物理现象及其浓度的计算结果。

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