{"title":"原子频率标准:nrc的新趋势与进展","authors":"J. Vanier","doi":"10.1109/CPEM.1988.671186","DOIUrl":null,"url":null,"abstract":"The paper reviews the state of the art of primary laboratory atomic frequency standards. Emphasis will be put on the new techniques being used in the field such as ion trapping, laser cooling and optical pumping, to implement more accurate primary optical or microwave frequency standards. Progress made at NRC on the subject will be outlined. Finally the central role of time as a base quantity of the international system of units will be discussed.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"18 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Atomic frequency standards: new trends and progress at nrc\",\"authors\":\"J. Vanier\",\"doi\":\"10.1109/CPEM.1988.671186\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The paper reviews the state of the art of primary laboratory atomic frequency standards. Emphasis will be put on the new techniques being used in the field such as ion trapping, laser cooling and optical pumping, to implement more accurate primary optical or microwave frequency standards. Progress made at NRC on the subject will be outlined. Finally the central role of time as a base quantity of the international system of units will be discussed.\",\"PeriodicalId\":326579,\"journal\":{\"name\":\"1988 Conference on Precision Electromagnetic Measurements\",\"volume\":\"18 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1988-06-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"1988 Conference on Precision Electromagnetic Measurements\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/CPEM.1988.671186\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"1988 Conference on Precision Electromagnetic Measurements","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CPEM.1988.671186","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Atomic frequency standards: new trends and progress at nrc
The paper reviews the state of the art of primary laboratory atomic frequency standards. Emphasis will be put on the new techniques being used in the field such as ion trapping, laser cooling and optical pumping, to implement more accurate primary optical or microwave frequency standards. Progress made at NRC on the subject will be outlined. Finally the central role of time as a base quantity of the international system of units will be discussed.
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