Licht-im-Terrarium: Literaturdatenbank
Licht-im-Terrarium: Literaturdatenbank |
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Hosono, H., Abe, Y., Kawazoe, H., & Imagawa, H. (1984). Solarization mechanism of glass containing ce3+ and as5+. Journal of Non-Crystalline Solids, 63(3), 357–363. Added by: Sarina (2022-07-27 11:50:01) |
| Resource type: Journal Article DOI: https://doi.org/10.1016/0022-3093(84)90103-0 ID no. (ISBN etc.): 0022-3093 BibTeX citation key: Hosono1984 View all bibliographic details  |
Categories: Englisch = English Creators: Abe, Hosono, Imagawa, Kawazoe Collection: Journal of Non-Crystalline Solids |
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| Abstract |
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The solarization mechanism in a glass containing both Ce3+ and As5+, 16Na2O·11CaO·73SiO2:0.15AsOx·0.015CeOx (in mol.%), is newly proposed by elucidating the valence and coordination structure of arsenic after the photochemical reaction, the mechanism being traditionally expressed as 2Ce3+ + As5+ →hv 2Ce4+ + As3+ ESR hyperfine quartets due to an As4+ ranging from 0.1 to 0.5 T built up on UV-irradiation and their line shape varied with the duration of the irradiation. The line shape analysis of the ESR spectra employing a computer simulation technique has led to the following conclusions; (1) As5+ is reduced to As4+ in the solarization process. (2) The geometry around the As4+ in the solarized glass is tetrahedral during the early stage and trigonal-pyramidal during the latter stage of the reaction.
Added by: Sarina |