{"title":"Elimination of radiation induced frequency-shifts caused by migration of alkali-metal ions in quartz","authors":"A. Halperin","doi":"10.1109/FREQ.2001.956208","DOIUrl":null,"url":null,"abstract":"Quartz usually contains AI impurities substituted for silicon in the lattice, with monovalent ions, as charge compensators at the Al. Ionizing radiation was found to induce frequency shifts in quartz resonators, caused by the migration in the lattice of the monovalent ions. Thermoluminescence was used in the present work to investigate the migration of the monovalent ions, Li/sup +/ in the present work. The investigation suggested a way to transfer the Li ions from the Al to sites where they form thermally stable electron traps. They are then not available for migration in the lattice. Irradiation at 350 K was found to reduce the concentration of the Li ions available for migration by two orders of magnitude.","PeriodicalId":369101,"journal":{"name":"Proceedings of the 2001 IEEE International Frequncy Control Symposium and PDA Exhibition (Cat. No.01CH37218)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2001-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 2001 IEEE International Frequncy Control Symposium and PDA Exhibition (Cat. No.01CH37218)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/FREQ.2001.956208","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Quartz usually contains AI impurities substituted for silicon in the lattice, with monovalent ions, as charge compensators at the Al. Ionizing radiation was found to induce frequency shifts in quartz resonators, caused by the migration in the lattice of the monovalent ions. Thermoluminescence was used in the present work to investigate the migration of the monovalent ions, Li/sup +/ in the present work. The investigation suggested a way to transfer the Li ions from the Al to sites where they form thermally stable electron traps. They are then not available for migration in the lattice. Irradiation at 350 K was found to reduce the concentration of the Li ions available for migration by two orders of magnitude.
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