电子束辐照对玻璃微球储氚性能的影响
Influence of electron-beam bombardment upon gas-barrier property of hollow glass microspheres
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摘要: 以研究氚衰变β电子对玻璃微球保气性能为目标，利用XPS在线测量技术研究了电子束照射下碱式硼硅酸盐玻璃中K+离子的迁移以及由此引发的空心玻璃微球保气性能的下降。研究表明：在阈值剂量以上，随着玻璃组分中K+含量的增加，由于K+离子迁移导致的阻气特性的下降效应越明显；对于一定组成的玻璃微球，电子照射剂量越大，通道网络的形成越容易，玻璃微球的保气性能下降越迅速。Abstract: In order to study the influence of β electrons from tritium decay upon hydrogen-barrier property of hollow glass microspheres(HGMs), this paper investigates the potassium ion migration and its impact on glass structure and gas-barrier property using XPS on-site characterization. Experiments reveal that, above the threshold dose of irradiation, the hydrogen-barrier property of HGM decreases with the increase of K2O in glass due to the formation of potassium ion migration net. For given glass composition and above the threshold dose, the formation of potassium ion migration net would become easier and the hydrogen-barrier property of HGM would decrease faster with the irradiation dose increasing.
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Key words:
- electron-beam /
- hollow glass microsphere /
- migration /
- gas-barrier property
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