Analysis of radiophotoluminescence center formation mechanism in Ag-doped phosphate glasses. (2nd May 2018)

• Record Type: Journal Article
• Authors: Kawamoto, Hiroki; Fujimoto, Yutaka; Koshimizu, Masanori; Okada, Go; Yanagida, Takayuki; Asai, Keisuke
• Is Part Of: Japanese journal of applied physics. Volume 57:Number 6(2018)
• Publication Date: 2018-05-02
• Subjects: Physics -- Periodicals; 621.05
• DOI: 10.7567/JJAP.57.062401
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: Ag-doped phosphate glasses have widely been used as radiophotoluminescence (RPL) dosimeters. However, the RPL center formation process is not fully understood. In this study, we investigated the RPL center formation process in Ag-doped Na–Al phosphate glasses. We observed that two RPL centers (Ag 0 and Ag 2+ ) were formed at temperatures higher than 100 and 250 K, respectively. In addition, activation energies of their formation were estimated to be 20 and 267 meV, respectively. These results suggest that the electron transfer process is not a simple thermally activated process.