通过核磁共振发现核废料储存容器上的漏孔

一种曾被捧为有存储放射性废料潜力的陶瓷材料其实只具有比之前想象少得多的抗辐射损伤能力。英国物理学家使用高分辨率的核磁共振(NMR)成像技术表明阿耳法粒子能够对锆合金材料造成严重的损伤,无法保证长时间存储核废料的安全。他们认为NMR技术能够帮助从其它潜在的陶瓷材料里发现具有长期存储能力的材料,因为NMR使我们能够了解发生在更深的、原子尺度上的辐射损伤。

NMR finds holes in nuclear waste storage (Jan 10)

http://physicsweb.org/article/news/11/1/5

A ceramic material touted for its potential to store radioactive waste is much less resilient to radiation damage than previously thought. Physicists in the UK used a high-resolution nuclear magnetic resonance (NMR) technique to show that alpha-radiation causes too much damage in zircon to ensure safety over long timescales. They now claim the NMR technique will help to assess the long-term durability of other potential ceramics by providing a deeper, atomic-scale understanding of damage events (Nature 445 190).