Radiophotoluminescence behavior in Ag-doped phosphate glasses

被引：15

作者：

Kawamoto, Hiroki ^{[1
]}

Koshimizu, Masanori ^{[1
,2
]}

Fujimoto, Yutaka ^{[1
]}

Asai, Keisuke ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Appl Chem, Sendai 9808579, Japan

[2] Shizuoka Univ, Res Inst Elect, Hamamatsu 4328011, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2023年 / 62卷 / 01期

关键词：

radiophotoluminescence; Ag-doped phosphate glass; dosimeter; STIMULATED LUMINESCENCE; SILVER; VISUALIZATION; DOSIMETER; CENTERS; CATIONS;

D O I：

10.35848/1347-4065/ac9cb0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Radiophotoluminescence (RPL) is an emission phenomenon induced by the photoexcitation of luminescent centers (RPL centers) formed by ionizing radiation. Ag-doped phosphate glasses exhibiting RPL are applied in glass badge dosimeters used for personal monitoring. In this paper, we discuss the RPL behavior of Ag-doped phosphate glasses and their properties along with RPL center formation and disappearance mechanisms. When Ag-doped phosphate glasses are exposed to ionizing radiation, Ag-0, Ag2+, and Ag-m (n+), such as Ag-2 (+), clusters are formed because Ag+ acts as an electron and hole trap. Ag2+ is formed by the transfer of holes from PO4 (3-) tetrahedra. On the other hand, electrons are trapped by Ag+ to form Ag-0. Subsequently, Ag-2 (+) is formed by the association between Ag-0 and Ag+ owing to the diffusion of Ag+. Ag-0 is attributed to blue RPL center, while Ag2+ and Ag-2 (+) are attributed to orange RPL centers. Moreover, Ag-2 (+) and Ag2+ disappear upon heating at 500 and 673 K, respectively.

引用

页数：9

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