In the present work, photochromism of WO3-P2O5 glass under gamma-ray irradiation was reported. As-prepared glass samples with different WO3 content are all optically transparent in the visible wavelength range thanks to the addition of a small amount of oxidizing couple Sb2O3-NaNO3. The photochromic properties are identified by transmission spectra of the glasses before and after irradiation. The results show that the irradiation induced darkening results from the reduction of W6+ to W5+ or W4+. The existence of WO6 clusters in glasses of high WO3 content is proved by XPS, which is the main reason for the obvious photochromic effects. The WO3-P2O5 glass is a promising candidate in gamma-ray sensitive detector.
|Pages (from-to)||34 - 37|
|Number of pages||4|
|Journal||Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms|
|Publication status||Published - 1 Nov 2015|
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
Shen, W., Baccaro, S., Cemmi, A., Xu, X., & Chen, G. (2015). Gamma-ray irradiation induced bulk photochromism in WO3-P2O5 glass. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 362, 34 - 37. . https://doi.org/10.1016/j.nimb.2015.08.094