Gamma irradiation-induced defects at doses of 0.5 and 5 MGy were studied in lithium sodium-borosilicate (LiNaBSi) and sodium barium-borosilicate (NaBaBSi) glasses, used for high-level radioactive waste immobilisation in the UK and India, respectively. X-band electron paramagnetic resonance (EPR), Raman and UV-Vis-nIR spectroscopies were used to characterise the glasses before and after irradiation. EPR and UV-Vis-nIR absorption spectroscopies revealed the formation of boron-oxygen hole centres (BOHC), electrons trapped at alkali cations or ET centres and peroxy-radicals (PORs) as defects common to both glasses. In addition, E⁻ or polaron centres were observed in NaBaBSi glasses, possibly related to formation of elemental sodium colloids. Time-dependent thermal annealing at a range of temperatures, including those relevant to canister centreline cooling (CCC), which may be of relevance to geological disposal in future technical assessments, was carried out to study thermal stability of these radiation-induced defects. It was observed that PORs are the most thermally-stable defects in both glasses. The influence of glass composition on the segregation of sodium and the possible formation of metal colloids upon irradiation have been discussed.

在分别用于英国和印度的高放废物固定化的硼硅酸锂钠（LiNaBSi）和钡硼硅酸钠（NaBaBSi）玻璃中，研究了剂量为0.5和5 MGy的伽马辐射引起的缺陷。X射线电子顺磁共振（EPR），拉曼光谱和UV-Vis-nIR光谱用于表征辐照前后的玻璃。EPR和UV-Vis-nIR吸收光谱显示硼氧空穴中心（BOHC）的形成，捕获在碱金属阳离子或ET中心的电子和过氧自由基（POR）都是两种玻璃常见的缺陷。此外，E ^-在NaBaBSi眼镜中观察到P或极化子中心，可能与元素钠胶体的形成有关。为了研究这些辐射引起的缺陷的热稳定性，进行了在一定温度范围内的时变热退火，包括与罐中心线冷却（CCC）有关的温度，这可能与将来的技术评估中的地质处置有关。观察到，POR是两种玻璃中最热稳定的缺陷。已经讨论了玻璃组成对钠的偏析以及在辐照下可能形成金属胶体的影响。