Abstract In this letter, we repot a new radio-photoluminescence (RPL) material. The RPL was observed non-doped Li2CO3 ceramics sintered in vacuum. Under 340 ± 40 nm excitation, a photoluminescence (PL) emission peak appeared around 470 nm, the intensity of which increases with X-ray irradiation dose. The RPL signal was very sensitive to X-ray dose, and the response signal was measurable as low as 0.1 mGy although the synthesis and measurement set-up were not optimized. This sensitivity is equivalent to that of commercial RPL dosimeters. In addition, the effective atomic number of Li2CO3 (Zeff = 7.32) is closer to that of biological tissue than any other dosimeter materials used in practice. From these reasons, we believe that this material should be a promising candidate for RPL dosimeters.

中文翻译：

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无掺杂 Li 2 CO 3 陶瓷作为一种新型的放射光致发光材料

摘要 在这封信中，我们报道了一种新的射电光致发光 (RPL) 材料。RPL 观察到非掺杂 Li2CO3 陶瓷在真空中烧结。在 340 ± 40 nm 激发下，光致发光 (PL) 发射峰出现在 470 nm 附近，其强度随着 X 射线照射剂量的增加而增加。RPL 信号对 X 射线剂量非常敏感，尽管合成和测量设置没有优化，但响应信号可测量到低至 0.1 mGy。这种灵敏度相当于商业 RPL 剂量计的灵敏度。此外，与实践中使用的任何其他剂量计材料相比，Li2CO3 的有效原子序数 (Zeff = 7.32) 更接近生物组织的原子序数。基于这些原因，我们认为这种材料应该是 RPL 剂量计的一个有希望的候选者。