E. Lechner, M. Kelley, A. Palczewski, C. Reece, J. Angle, F. Stevie
{"title":"炉焙烧铌的SIMS研究","authors":"E. Lechner, M. Kelley, A. Palczewski, C. Reece, J. Angle, F. Stevie","doi":"10.2172/1905495","DOIUrl":null,"url":null,"abstract":"Impurity-alloying SRF cavities via thermal diffusion has yielded highly efficient Nb resonators. Recently, SRF cavities vacuum heat treated at 300 – 400 ° C for a few hours have exhibited high quality factors and behavior typical of alloyed cavities. Using secondary ion mass spectrometry, we investigated the interstitial concentration of carbon, nitrogen, and oxygen in niobium prepared by this method. Our investigation shows that oxygen is likely the primary diffusant in such recipes and is well-described by Ciovati’s model for native niobium oxide dissolution and oxygen diffusion.","PeriodicalId":293889,"journal":{"name":"International Conference on RF Superconductivity (20th), East Lansing, MI, USA, 28 June-02 July 2021","volume":"2 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"SIMS Investigation of Furnace-Baked Nb\",\"authors\":\"E. Lechner, M. Kelley, A. Palczewski, C. Reece, J. Angle, F. Stevie\",\"doi\":\"10.2172/1905495\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Impurity-alloying SRF cavities via thermal diffusion has yielded highly efficient Nb resonators. Recently, SRF cavities vacuum heat treated at 300 – 400 ° C for a few hours have exhibited high quality factors and behavior typical of alloyed cavities. Using secondary ion mass spectrometry, we investigated the interstitial concentration of carbon, nitrogen, and oxygen in niobium prepared by this method. Our investigation shows that oxygen is likely the primary diffusant in such recipes and is well-described by Ciovati’s model for native niobium oxide dissolution and oxygen diffusion.\",\"PeriodicalId\":293889,\"journal\":{\"name\":\"International Conference on RF Superconductivity (20th), East Lansing, MI, USA, 28 June-02 July 2021\",\"volume\":\"2 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Conference on RF Superconductivity (20th), East Lansing, MI, USA, 28 June-02 July 2021\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.2172/1905495\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Conference on RF Superconductivity (20th), East Lansing, MI, USA, 28 June-02 July 2021","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2172/1905495","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Impurity-alloying SRF cavities via thermal diffusion has yielded highly efficient Nb resonators. Recently, SRF cavities vacuum heat treated at 300 – 400 ° C for a few hours have exhibited high quality factors and behavior typical of alloyed cavities. Using secondary ion mass spectrometry, we investigated the interstitial concentration of carbon, nitrogen, and oxygen in niobium prepared by this method. Our investigation shows that oxygen is likely the primary diffusant in such recipes and is well-described by Ciovati’s model for native niobium oxide dissolution and oxygen diffusion.
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