Nonlinear X-ray production of defect spins in vitreous SiO2: The roles of creation and activation

Autor:	J.C. Mikkelsen, Galeener Fl, D.B. Kerwin, A. J. Miller
Rok vydání:	1992
Předmět:	chemistry.chemical_classification Spins Condensed matter physics X-ray General Chemistry Condensed Matter Physics law.invention Nonlinear system Nuclear magnetic resonance chemistry law Materials Chemistry Irradiation Electron paramagnetic resonance Inorganic compound Spin-½
Zdroj:	Solid State Communications. 82:271-275
ISSN:	0038-1098
DOI:	10.1016/0038-1098(92)90640-u
Popis:	The dependence of spin concentration on X-ray dose is shown to be nonlinear in distinctive ways for the three most common defect structures in vitreous SiO2. We fit the data with a model invoking two concurrent simple processes: creation of new defects and activation of preexisting ones. The resultant fit parameters show dependencies on hydroxyl concentration and fictive temperature that shed new light on the processes, the defects, their origins and the radiation hardness of v-SiO2.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c8b1f57824131c66db71b08d8f465717 https://doi.org/10.1016/0038-1098(92)90640-u Zobrazit plný text záznamu