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Conference Digest Conference on Precision Electromagnetic Measurements最新文献

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Optimization of AC power measurements for immunity to spectral leakage due to imperfect phase-locking 交流功率测量抗不完全锁相引起的频谱泄漏的优化
Conference Digest Conference on Precision Electromagnetic Measurements Pub Date : 2002-06-16 DOI: 10.1109/CPEM.2002.1034967
S. Svensson
{"title":"Optimization of AC power measurements for immunity to spectral leakage due to imperfect phase-locking","authors":"S. Svensson","doi":"10.1109/CPEM.2002.1034967","DOIUrl":"https://doi.org/10.1109/CPEM.2002.1034967","url":null,"abstract":"Power measurements can benefit from spectral analysis. It may, however, also lead to errors that are not immediately recognizable, caused by spectral leakage due to imperfect phase-locking in measurement systems. This paper analyses this problem for low-frequency AC power measurements. The conclusion is that if any spectral decomposition is made, care should be taken not to use excessive measurement times, and that the phase-locked loop bandwidth should be kept as low as possible.","PeriodicalId":121798,"journal":{"name":"Conference Digest Conference on Precision Electromagnetic Measurements","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115366107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A thermal voltage converter based on thermistors 一种基于热敏电阻的热电压转换器
Conference Digest Conference on Precision Electromagnetic Measurements Pub Date : 2002-06-16 DOI: 10.1109/CPEM.2002.1034702
D. Slomovitz, C. Faverio, A. Spaggiari
{"title":"A thermal voltage converter based on thermistors","authors":"D. Slomovitz, C. Faverio, A. Spaggiari","doi":"10.1109/CPEM.2002.1034702","DOIUrl":"https://doi.org/10.1109/CPEM.2002.1034702","url":null,"abstract":"This paper presents a thermal voltage converter (TVC) using thermistors as temperature detectors instead of thermocouples, as it is commonly used. Thermistors have the advantage of having high temperature coefficients. This permits operation at low working temperatures. In this way, the main causes of AC/DC errors can be reduced.","PeriodicalId":121798,"journal":{"name":"Conference Digest Conference on Precision Electromagnetic Measurements","volume":"178 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124438775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of a silver atom optical clock 银原子光学钟的研制
Conference Digest Conference on Precision Electromagnetic Measurements Pub Date : 2002-06-16 DOI: 10.1109/CPEM.2002.1034802
Y. Louyer, L. Badr, S.C. du Rozier, M. Plimmer, P. Juncar, M. Himbert
{"title":"Development of a silver atom optical clock","authors":"Y. Louyer, L. Badr, S.C. du Rozier, M. Plimmer, P. Juncar, M. Himbert","doi":"10.1109/CPEM.2002.1034802","DOIUrl":"https://doi.org/10.1109/CPEM.2002.1034802","url":null,"abstract":"Summary form only given. We are developing an optical frequency standard based on the narrow 4d/sup 10/ 5s /sup 2/S/sub 1/2//spl rarr/4d/sup 9/ 5s/sup 2/ /sup 2/D/sub 5/2/ transition in atomic silver. We have realized a two-photon spectrometer and are now engaged in a measurement of the frequency of the broader but easier-to-detect two-photon transition to the 4d/sup 9/ 5s/sup 2/ /sup 2/D/sub 3/2/ level.","PeriodicalId":121798,"journal":{"name":"Conference Digest Conference on Precision Electromagnetic Measurements","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117182510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Test for the time independence of the fine structure constant, /spl alpha/, using cryogenic sapphire resonators at microwave frequencies 使用低温蓝宝石谐振器在微波频率下测试精细结构常数/spl α /的时间独立性
Conference Digest Conference on Precision Electromagnetic Measurements Pub Date : 2002-06-16 DOI: 10.1109/CPEM.2002.1034850
M. Tobar, J. Hartnett
{"title":"Test for the time independence of the fine structure constant, /spl alpha/, using cryogenic sapphire resonators at microwave frequencies","authors":"M. Tobar, J. Hartnett","doi":"10.1109/CPEM.2002.1034850","DOIUrl":"https://doi.org/10.1109/CPEM.2002.1034850","url":null,"abstract":"A new experiment to test for the time independence of the fine structure constant, /spl alpha/, is proposed. The experiment utilizes different polarized modes in a sapphire resonator. When configured as a dual mode sapphire clock, we show that it is possible to undertake a sensitive measurement from the beat frequency between the two modes.","PeriodicalId":121798,"journal":{"name":"Conference Digest Conference on Precision Electromagnetic Measurements","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127169762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nonlinear spectroscopy in an active interferometer with saturable absorber 具有饱和吸收器的有源干涉仪的非线性光谱
Conference Digest Conference on Precision Electromagnetic Measurements Pub Date : 2002-06-16 DOI: 10.1109/CPEM.2002.1034795
P. Pokasov, A. Kurbatov, D. Primakov, E. A. Titov, S. Bagayev
{"title":"Nonlinear spectroscopy in an active interferometer with saturable absorber","authors":"P. Pokasov, A. Kurbatov, D. Primakov, E. A. Titov, S. Bagayev","doi":"10.1109/CPEM.2002.1034795","DOIUrl":"https://doi.org/10.1109/CPEM.2002.1034795","url":null,"abstract":"The investigation into the form of nonlinear optical resonances in an active Fabry-Perot interferometer with amplifying and absorbing media saturated by an external laser radiation was performed. Such an active interferometer may ensure an enhancement in the intensity of resonances by one order of magnitude as compared with a similar passive system.","PeriodicalId":121798,"journal":{"name":"Conference Digest Conference on Precision Electromagnetic Measurements","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122906072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New AC current shunts of MIKES 新型麦克交流电流分流器
Conference Digest Conference on Precision Electromagnetic Measurements Pub Date : 2002-06-16 DOI: 10.1109/CPEM.2002.1034876
T. Mansten, A. Rautiainen, P. Helisto
{"title":"New AC current shunts of MIKES","authors":"T. Mansten, A. Rautiainen, P. Helisto","doi":"10.1109/CPEM.2002.1034876","DOIUrl":"https://doi.org/10.1109/CPEM.2002.1034876","url":null,"abstract":"A new construction principle of AC current shunts has been applied to a set of shunts for AC currents from 1 A to 20 A, 20 Hz-10 kHz. The completed set will also cover current ranges from 20 mA to 1 A. The shunts are stable and do not show excessive AC-DC amplitude or phase differences and can thus be calibrated to work as AC current and resistance reference standards up to 10 kHz.","PeriodicalId":121798,"journal":{"name":"Conference Digest Conference on Precision Electromagnetic Measurements","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114450848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
The magnetic moment of the helion in Bohr magnetons 玻尔磁子中负极的磁矩
Conference Digest Conference on Precision Electromagnetic Measurements Pub Date : 2002-06-16 DOI: 10.1109/CPEM.2002.1034735
J. Flowers, P. Josephs-Franks, B. Petley
{"title":"The magnetic moment of the helion in Bohr magnetons","authors":"J. Flowers, P. Josephs-Franks, B. Petley","doi":"10.1109/CPEM.2002.1034735","DOIUrl":"https://doi.org/10.1109/CPEM.2002.1034735","url":null,"abstract":"We have previously described an experiment to measure the magnetic moment of the helion in Bohr magnetons. We now have preliminary results using the first of two proposed methods, an irreversible seal-breaking method. Improvements obtainable with the second method are discussed.","PeriodicalId":121798,"journal":{"name":"Conference Digest Conference on Precision Electromagnetic Measurements","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117281244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Frequency performance of 12 906 /spl Omega/ and 6 453 /spl Omega/ reference resistors for ac quantum Hall effect experiments: results of a Euromet project 用于交流量子霍尔效应实验的12个906 /spl ω /和6 453 /spl ω /参考电阻的频率性能:欧洲气象局项目的结果
Conference Digest Conference on Precision Electromagnetic Measurements Pub Date : 2002-06-16 DOI: 10.1109/CPEM.2002.1034860
J. Bohacek
{"title":"Frequency performance of 12 906 /spl Omega/ and 6 453 /spl Omega/ reference resistors for ac quantum Hall effect experiments: results of a Euromet project","authors":"J. Bohacek","doi":"10.1109/CPEM.2002.1034860","DOIUrl":"https://doi.org/10.1109/CPEM.2002.1034860","url":null,"abstract":"To enable quantifying the degree of equivalence of different ways of measuring quantized Hall resistances, 12 906 /spl Omega/ and 6 453 /spl Omega/ travelling resistors have been prepared and utilized as transfer standards in a comparison based on measurement of their frequency performances at a number of laboratories.","PeriodicalId":121798,"journal":{"name":"Conference Digest Conference on Precision Electromagnetic Measurements","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128801262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electroluminescence - an optical technique to determine the early stages of polymer degradation under high electric stresses 电致发光——一种在高电应力下测定聚合物降解早期阶段的光学技术
Conference Digest Conference on Precision Electromagnetic Measurements Pub Date : 2002-06-16 DOI: 10.1109/CPEM.2002.1034742
S. Bamji, A. Bulinski
{"title":"Electroluminescence - an optical technique to determine the early stages of polymer degradation under high electric stresses","authors":"S. Bamji, A. Bulinski","doi":"10.1109/CPEM.2002.1034742","DOIUrl":"https://doi.org/10.1109/CPEM.2002.1034742","url":null,"abstract":"An experimental setup to detect electroluminescence (EL) in polymeric dielectric subjected to high electric stresses is described. The technique, which is at least three orders of magnitude more sensitive than conventional partial discharge detection systems, shows that the spectra of EL are in the visible and ultraviolet ranges and could cause polymer degradation.","PeriodicalId":121798,"journal":{"name":"Conference Digest Conference on Precision Electromagnetic Measurements","volume":"167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114072740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Nano-scale integrity and coherence of the S.I s.i.的纳米尺度完整性和相干性
Conference Digest Conference on Precision Electromagnetic Measurements Pub Date : 2002-06-16 DOI: 10.1109/CPEM.2002.1034848
M. Milton, P. Cumpson
{"title":"Nano-scale integrity and coherence of the S.I","authors":"M. Milton, P. Cumpson","doi":"10.1109/CPEM.2002.1034848","DOIUrl":"https://doi.org/10.1109/CPEM.2002.1034848","url":null,"abstract":"Traceable measurements at the nano-scale are usually made by establishing links to the scale of the S.I. base units all of which are defined at the macro-scale. We report the results of a study into the implications of the burgeoning developments in nano-technology on the realisation of S.I. quantities at the nano-scale.","PeriodicalId":121798,"journal":{"name":"Conference Digest Conference on Precision Electromagnetic Measurements","volume":"187 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114745198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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