Investigation of the hydrogen of silica glass being laser-irradiating by 1H MAS NMR

The occurrence of the damage among the silica glass being laser-irradiation is closed related with the hydrogen. The laser of 248nm lead to the structure collapsing to made the silica glass crystallized. With the crystallized and non- crystallized parts, the 1H MAS NMR result shows that the concentration of the hydrogen are different of the damaged and non-damaged silica glass. Which is the evidence for the damage-delaying by the hydrogen.