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首页> 外文会议>International Conference on Advances in Destructive and Non-Destructive Analysis for Environmental Monitoring and Nuclear Forensics; 20021021-20021023; Karlsruhe; DE >APPLICATION OF ACCELERATOR MASS SPECTROMETRY TO NUCLEAR SAFEGUARDS
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APPLICATION OF ACCELERATOR MASS SPECTROMETRY TO NUCLEAR SAFEGUARDS

机译：加速器质谱法在核安全中的应用

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摘要

For radionuclides with half-lives greater than a thousand years, mass spectrometers equipped with atom counting detection systems offer greater sensitivity than is possible by radiometric techniques. However, conventional mass spectrometers are ultimately limited by interferences from isobars, molecules or neighbouring abundant isotopes. The techniques employed in accelerator mass spectrometry have the potential to eliminate or greatly reduce these interferences. Accelerator mass spectrometry can achieve isotopic abundance sensitivities of 10~(-15) and detection limits of less than 1 fg. This technique has been widely used for radiocarbon dating and related applications. In this paper, we address its application to detection of nuclear signatures at trace levels, in support of international nuclear safeguards, focusing on the utilization of the radionuclides ~(129)I and ~(236)U.
机译：对于半衰期超过一千年的放射性核素，配备有原子计数检测系统的质谱仪提供的灵敏度要高于放射技术。但是，传统的质谱仪最终会受到等压线，分子或邻近的丰富同位素的干扰的限制。加速器质谱中使用的技术具有消除或大大减少这些干扰的潜力。加速器质谱可达到10〜（-15）的同位素丰度灵敏度，检测限小于1 fg。该技术已广泛用于放射性碳测年和相关应用。在本文中，我们着重介绍其在痕量核签名检测中的应用，以支持国际核保障措施，重点是利用放射性核素〜（129）I和〜（236）U。

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