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Proceedings of Conference on Precision Electromagnetic Measurements Digest最新文献

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Cryogenic current comparator for QHR determination at NML 低温电流比较器在NML测定QHR
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333256
G. Small, K. Leslie, B. W. Ricketts, P. Coogan
{"title":"Cryogenic current comparator for QHR determination at NML","authors":"G. Small, K. Leslie, B. W. Ricketts, P. Coogan","doi":"10.1109/CPEM.1994.333256","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333256","url":null,"abstract":"A cryogenic current comparator is being developed at NML to give high accuracy comparisons of room temperature resistors and quantized Hall resistances. The comparator incorporates novel developments in the method of calibrating auxiliary currents and in the method of construction of the superconducting shielding around the comparator windings.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126346980","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
A potential new frequency/wavelength standard at 778 nm: Doppler free two-photon transitions in rubidium 一个潜在的778 nm新频率/波长标准:铷的多普勒自由双光子跃迁
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333398
Y. Millerioux, R. Felder, D. Touahri, O. Acef, L. Hilico, A. Clairon, F. Biraben, B. de Beauvoir, L. Julien, F. Nez
{"title":"A potential new frequency/wavelength standard at 778 nm: Doppler free two-photon transitions in rubidium","authors":"Y. Millerioux, R. Felder, D. Touahri, O. Acef, L. Hilico, A. Clairon, F. Biraben, B. de Beauvoir, L. Julien, F. Nez","doi":"10.1109/CPEM.1994.333398","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333398","url":null,"abstract":"We have stabilized two laser diodes on the hyperfine components of the 5D/sub 3/2/ and 5D/sub 5/2/ two-photon transitions in natural rubidium (v=385 THz). We have carefully investigated the metrological features of these devices. So far we obtain a frequency stability in terms of the Allan variance of 3.10/sup -13/./spl tau//sup - 1/2 / up to 2000 s and a frequency repeatability of the order of 10/sup -12/. The frequency difference between the two devices is 1.7 kHz under identical operating conditions.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130616140","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: 3
AC measurements of the residual longitudinal resistivity of different GaAs-based samples in the QHE regime between 3 Hz and 100 kHz 在3hz和100khz之间的QHE状态下，不同gaas基样品的剩余纵向电阻率的交流测量
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333263
F. Piquemal, G. Trapon, G. Genevès
{"title":"AC measurements of the residual longitudinal resistivity of different GaAs-based samples in the QHE regime between 3 Hz and 100 kHz","authors":"F. Piquemal, G. Trapon, G. Genevès","doi":"10.1109/CPEM.1994.333263","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333263","url":null,"abstract":"AC measurements of the longitudinal resistivity, /spl rho//sub xx/, of three QHE samples were made at frequencies up to 100 kHz, at 1.2 K and 4.3 K, on the i=1.2 and 4 plateaus. Preliminary results show a frequency dependence on the residual value of the minimum of /spl rho//sub xx/, /spl rho//sub xx//sup min/, but not, or very few on the width of the magnetic flux density range over which /spl rho//sub xx//sup min/ takes place. In the frequency domain around 1 kHz, the /spl rho//sub xx//sup min/ values lie within 0.4 m/spl Omega/ to 8 m/spl Omega/ at 1.2 K, depending on plateaus and samples used. It promises an expected quantization of the Hall resistance, /spl rho//sub xy/=R/sub H/(i), to be complete at a level of one part in 10/sup 8/.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"304 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132436088","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
Large signal load-pull measurements using six-port reflectometers 大信号负载-拉力测量使用六端口反射计
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333395
F. Deshours, E. Bergeault, L. Jallet, B. Huyart
{"title":"Large signal load-pull measurements using six-port reflectometers","authors":"F. Deshours, E. Bergeault, L. Jallet, B. Huyart","doi":"10.1109/CPEM.1994.333395","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333395","url":null,"abstract":"This paper describes an active load-pull measurement system, using two six-port junctions for nonlinear characterization of power transistors. Load-pull measurements on a 600 /spl mu/m MESFET have been performed at 2 GHz.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132562568","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: 3
Comparison of quantum Hall effect resistance standards of the BNM/LCIE and the BIPM BNM/LCIE和BIPM的量子霍尔效应电阻标准比较
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333416
F. Delahaye, T. J. Witt, F. Piquemal, G. Genevès
{"title":"Comparison of quantum Hall effect resistance standards of the BNM/LCIE and the BIPM","authors":"F. Delahaye, T. J. Witt, F. Piquemal, G. Genevès","doi":"10.1109/CPEM.1994.333416","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333416","url":null,"abstract":"A comparison of quantum Hall effect (QME) resistance standards has been carried out by transporting a complete QHE system from the BIPM to the Laboratoire Primaire d'Electricite-Magnetisme (BNM/LCIE). From 13 to 17 December 1993, measurements of a 100 /spl Omega/ resistance standard were carried out with the QHE standards of the two laboratories. The results agree to within a few parts in 10/sup 9/.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128305394","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: 35
Monitoring the 1 /spl Omega/ standard resistor by quantum Hall effect 利用量子霍尔效应监测1 /spl ω /标准电阻
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333265
J. Kinoshita, M. Nakanishi, K. Yoshihiro, T. Endo
{"title":"Monitoring the 1 /spl Omega/ standard resistor by quantum Hall effect","authors":"J. Kinoshita, M. Nakanishi, K. Yoshihiro, T. Endo","doi":"10.1109/CPEM.1994.333265","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333265","url":null,"abstract":"Resistance standards at ETL are maintained by quantum Hall effect. Resistance of the 1 /spl Omega/ resistor named 69J101 is monitored. The result is R69J101=1-(5.682/spl plusmn/0.018)/spl times/10/sup -6/+(0.110/spl plusmn/0.003)/spl times/10/sup -6/ t /spl Omega/ where t is time in years from Jan. 1, 1994. The difference of 1 /spl Omega/ standard between ETL and BIPM on 1990 international comparison is reduced from MINUS/0.128 ppm to -0.044 ppm.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134313728","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
Advancements in picosecond resolution time interval measurement techniques 皮秒分辨率时间间隔测量技术的进展
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333311
L. Dobos
{"title":"Advancements in picosecond resolution time interval measurement techniques","authors":"L. Dobos","doi":"10.1109/CPEM.1994.333311","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333311","url":null,"abstract":"New, efficient measurement techniques are used to adequately characterize the actual performance of the new generation of programmable equivalent time sequential sampling oscilloscopes. These instruments provide new time interval measurement capabilities with increased repeatability and accuracy. Subpicosecond repeatability for risetime measurements of fast step generators (20 ps transition time) has been observed. A typical timebase related peak error of 3 ps for short time interval measurements (up to tens of ns) has been shown. A brief introduction on the horizontal timebase error sources is followed by the description of the automated measurement techniques. Finally actual measurement results are shown using the described techniques.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134383639","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: 4
Calcium optical frequency standard 钙光频率标准
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1117/12.424460
F. Riehle, I. Schnatz, A. Celikov, T. Kisters, K. Zeiske, G. Zinner, J. Helmcke
{"title":"Calcium optical frequency standard","authors":"F. Riehle, I. Schnatz, A. Celikov, T. Kisters, K. Zeiske, G. Zinner, J. Helmcke","doi":"10.1117/12.424460","DOIUrl":"https://doi.org/10.1117/12.424460","url":null,"abstract":"We report on high-resolution spectroscopy with dye and diode lasers and with three different samples of Ca atoms, in an effusive beam, in a laser cooled beam, and in a magneto-optical trap. The results should allow to improve the Ca, optical frequency standard, recommended by the CIPM, with a relative uncertainty below 10/sup -14/.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134574305","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: 3
High stability current control in the 10 A range 高稳定性电流控制在10a范围内
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333269
E. Rubiola
{"title":"High stability current control in the 10 A range","authors":"E. Rubiola","doi":"10.1109/CPEM.1994.333269","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333269","url":null,"abstract":"This paper reports the design and the evaluation of an high stability current source developed for energizing the C-field magnet of the high field cesium standard experiment, currently in progress at Politecnico di Torino. This source, devoted to C-field uniformity measurements, supplies about 1 kW dc power with a current stability of about 10/sup -7/.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133055697","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: 9
Two-way time transfer experiments via meteor burst communication 流星爆发通信双向时间转移实验
Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI: 10.1109/CPEM.1994.333280
V. Sidorov, R.R. Merzakreev, L.A. Epictetov
{"title":"Two-way time transfer experiments via meteor burst communication","authors":"V. Sidorov, R.R. Merzakreev, L.A. Epictetov","doi":"10.1109/CPEM.1994.333280","DOIUrl":"https://doi.org/10.1109/CPEM.1994.333280","url":null,"abstract":"Meteor burst communication equipment has been successfully utilized in Russia for two-way time comparisons between standards of several time-keeping services. For its operation, the equipment depends on carrier phase measurements at several frequencies. Time transfer with accuracy better than 1 ns for a distance up to 2000 km is possible via this self-contained and low-cost equipment. To test the equipment and to estimate the time transfer performance, a series of time transfer experiments has been made on several meteor links in 1991-1993.<<ETX>>","PeriodicalId":388647,"journal":{"name":"Proceedings of Conference on Precision Electromagnetic Measurements Digest","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133137732","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
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