Stability of E' centers induced by 4.7eV laser radiation in SiO2

Details Stability of E' centers induced by 4.7eV laser radiation in SiO2 Stability of E' centers induced by 4.7eV laser radiation in SiO2

2007-03-02

arxiv.org/abs/cond-mat/0703066v1

J. Non-Cryst. Solids 353, 522 (2007).

Physics

Condensed Matter

Materials Science

12 pages, 3 figures, in press on J. Non cryst. solids (2007)

Scientific paper

10.1016/j.jnoncrysol.2006.09.043

The kinetics of E' centers (silicon dangling bonds) induced by 4.7eV pulsed laser irradiation in dry fused silica was investigated by in situ optical absorption spectroscopy. The stability of the defects, conditioned by reaction with mobile hydrogen of radiolytic origin, is discussed and compared to results of similar experiments performed on wet fused silica. A portion of E' and hydrogen are most likely generated by laser-induced breaking of Si-H precursors, while an additional fraction of the paramagnetic centers arise from another formation mechanism. Both typologies of E' participate to the reaction with H_2 leading to the post-irradiation decay of the defects. This annealing process is slowed down on decreasing temperature and is frozen at T=200K, consistently with the diffusion properties of H_2 in silica.

Affiliated with

Also associated with

No associations

Rating

Stability of E' centers induced by 4.7eV laser radiation in SiO2 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Stability of E' centers induced by 4.7eV laser radiation in SiO2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stability of E' centers induced by 4.7eV laser radiation in SiO2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-284426