Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (12): 126101-126101.doi: 10.1088/1674-1056/22/12/126101

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

XPS and Raman studies of electron irradiated sodium silicate glass

陈亮, 王铁山, 张根发, 杨坤杰, 彭海波, 张利民   

  1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
  • 收稿日期:2013-01-03 修回日期:2013-05-31 出版日期:2013-10-25 发布日期:2013-10-25

XPS and Raman studies of electron irradiated sodium silicate glass

Chen Liang (陈亮), Wang Tie-Shan (王铁山), Zhang Gen-Fa (张根发), Yang Kun-Jie (杨坤杰), Peng Hai-Bo (彭海波), Zhang Li-Min (张利民)   

  1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
  • Received:2013-01-03 Revised:2013-05-31 Online:2013-10-25 Published:2013-10-25
  • Contact: Wang Tie-Shan E-mail:tswang@lzu.edu.cn

摘要: The microstructure modifications of sodium silicate glass induced by 1.2-MeV electron irradiation are studied by x-ray photoelectron spectroscopy and Raman spectroscopy. Depth profile analyses are also performed on the irradiated glass at 109 Gy. A sodium-depleted layer with a thickness of a few tens of nanometers and the corresponding increase of network polymerization on the top surface are observed after electron bombardment, while the polymerization in the subsurface region has a negligible variation with the irradiation dose. Moreover, the formation of molecular oxygen after electron irradiation is evidenced, which is mainly aggregated in the first two-micron-thick irradiated glass surface. These modifications are correlated to the network relaxation process as a consequence of the diffusion and desorption of sodium species during electron irradiation.

关键词: silicate glass, electron irradiation, network polymerization, oxygen molecule

Abstract: The microstructure modifications of sodium silicate glass induced by 1.2-MeV electron irradiation are studied by x-ray photoelectron spectroscopy and Raman spectroscopy. Depth profile analyses are also performed on the irradiated glass at 109 Gy. A sodium-depleted layer with a thickness of a few tens of nanometers and the corresponding increase of network polymerization on the top surface are observed after electron bombardment, while the polymerization in the subsurface region has a negligible variation with the irradiation dose. Moreover, the formation of molecular oxygen after electron irradiation is evidenced, which is mainly aggregated in the first two-micron-thick irradiated glass surface. These modifications are correlated to the network relaxation process as a consequence of the diffusion and desorption of sodium species during electron irradiation.

Key words: silicate glass, electron irradiation, network polymerization, oxygen molecule

中图分类号:  (Glasses)

  • 61.43.Fs
61.80.Fe (Electron and positron radiation effects)