Pub Date : 1989-04-01DOI: 10.1109/CPEM.1988.671145
K. Jaeger, C. A. Zack
An Array Josephson Junctin (AJJ) has been in operation at Lockheed Missiles & Space Co. (LMSC) since September 1986. The AJJ was fabricated at the U.S. National Bureau of Standards (NBS) in Boulder, Co. It has been used on a routine basis for calibration of primary solid state reference standards near 1.0 volts since January 1987. Uncertainties at this voltage level are presently estimated at less than 0.3 ppm.
{"title":"Industrial experience with an array Josephson junction","authors":"K. Jaeger, C. A. Zack","doi":"10.1109/CPEM.1988.671145","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671145","url":null,"abstract":"An Array Josephson Junctin (AJJ) has been in operation at Lockheed Missiles & Space Co. (LMSC) since September 1986. The AJJ was fabricated at the U.S. National Bureau of Standards (NBS) in Boulder, Co. It has been used on a routine basis for calibration of primary solid state reference standards near 1.0 volts since January 1987. Uncertainties at this voltage level are presently estimated at less than 0.3 ppm.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133192035","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}
Pub Date : 1988-06-07DOI: 10.1109/CPEM.1988.671307
R. Monti
{"title":"EM Measurements of the Velocity of Light","authors":"R. Monti","doi":"10.1109/CPEM.1988.671307","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671307","url":null,"abstract":"","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115680650","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}
Pub Date : 1988-06-07DOI: 10.1109/CPEM.1988.671264
T. Takeishi, H. Bhat, C. Minamitake
Fourier analysis technique is adopted to evaluate the dc and ac component in a thermo-electromotive force (TEMF) from a vacuo-thermojunction(VTJ) at ultra-low frequency. In experiments, a digital wavememory(DM) and a microcomputer(MC) are used to minimize a noise by repeating the analysis and averaging each results. A number of repetition required to sufficiently suppress the influence of the noise is given.
{"title":"Analysis For Vacuo-Thermojunction Characteristics Using Microcomputer","authors":"T. Takeishi, H. Bhat, C. Minamitake","doi":"10.1109/CPEM.1988.671264","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671264","url":null,"abstract":"Fourier analysis technique is adopted to evaluate the dc and ac component in a thermo-electromotive force (TEMF) from a vacuo-thermojunction(VTJ) at ultra-low frequency. In experiments, a digital wavememory(DM) and a microcomputer(MC) are used to minimize a noise by repeating the analysis and averaging each results. A number of repetition required to sufficiently suppress the influence of the noise is given.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115753118","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}
Pub Date : 1988-06-07DOI: 10.1109/CPEM.1988.671365
Y. Fujii
Theoretical backgrounds behind the experimental searches for a purported intermediate-range force nearly as weak as gravity are reviewed.
本文回顾了在实验中寻找几乎和重力一样弱的中距离力的理论背景。
{"title":"On The Theories of the Fifth Force","authors":"Y. Fujii","doi":"10.1109/CPEM.1988.671365","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671365","url":null,"abstract":"Theoretical backgrounds behind the experimental searches for a purported intermediate-range force nearly as weak as gravity are reviewed.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117166330","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}
Pub Date : 1988-06-07DOI: 10.1109/CPEM.1988.671227
M. Afsar
The dispersive Fourier transform spectroscopy was used with the specimen at the center of a high intensity "Bitter" solenoid magnet to measure the real and imaginary parts of complex magnetic permeability and real and imaginary parts of the complex dielectric permittivity of cubic and hexagonal ferrite materials at millimeter wavelength region.
{"title":"Direct Measurements of Complex Magnetic Permeability and Complex Dielectric Permittivity of Magnetic Materials","authors":"M. Afsar","doi":"10.1109/CPEM.1988.671227","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671227","url":null,"abstract":"The dispersive Fourier transform spectroscopy was used with the specimen at the center of a high intensity \"Bitter\" solenoid magnet to measure the real and imaginary parts of complex magnetic permeability and real and imaginary parts of the complex dielectric permittivity of cubic and hexagonal ferrite materials at millimeter wavelength region.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127493511","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}
Pub Date : 1988-06-07DOI: 10.1109/CPEM.1988.671337
P. Miljanic
A computer-controlled calibrator capable of delivering AC sinusoidal and distorted voltage, current and power, with an accuracy of several parts per milion, is described. A combination of feedback and error-feedforward control strategy, together with the current comparator technique for very accurate ratio measurements, is implemented. The ppm stability of the calibrator permits the use of a multiplexing program for monitoring of several instruments over a long period of time.
{"title":"Calibrator For Alternating Voltage, Current And Power","authors":"P. Miljanic","doi":"10.1109/CPEM.1988.671337","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671337","url":null,"abstract":"A computer-controlled calibrator capable of delivering AC sinusoidal and distorted voltage, current and power, with an accuracy of several parts per milion, is described. A combination of feedback and error-feedforward control strategy, together with the current comparator technique for very accurate ratio measurements, is implemented. The ppm stability of the calibrator permits the use of a multiplexing program for monitoring of several instruments over a long period of time.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124890267","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}
Pub Date : 1988-06-07DOI: 10.1109/CPEM.1988.671352
K. Goossens, L. van Biesen
Non-uniform electric fields are used to determine the dielectric properties of macroscopic particles (um). Experimental work on permittivity measurements of microfossils have led to new applications in paleontology.
{"title":"Permittivity Measurements of Macroscopic Particles","authors":"K. Goossens, L. van Biesen","doi":"10.1109/CPEM.1988.671352","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671352","url":null,"abstract":"Non-uniform electric fields are used to determine the dielectric properties of macroscopic particles (um). Experimental work on permittivity measurements of microfossils have led to new applications in paleontology.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125775379","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}
Pub Date : 1988-06-07DOI: 10.1109/CPEM.1988.671370
N. Nahman
The reference pulse generator (RPG) is a transfer standard, i.e., a generator of known pulse shape, amplitude, and source impedance, useful for evaluating the measurement capabilities of waveform measurement systems. The discussion includes (1) principles, (2) application methodology, and (3) a review of the RPG evolution to present ongoing development.
{"title":"Reference Pulse Generators: Theory Application and Status of Development","authors":"N. Nahman","doi":"10.1109/CPEM.1988.671370","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671370","url":null,"abstract":"The reference pulse generator (RPG) is a transfer standard, i.e., a generator of known pulse shape, amplitude, and source impedance, useful for evaluating the measurement capabilities of waveform measurement systems. The discussion includes (1) principles, (2) application methodology, and (3) a review of the RPG evolution to present ongoing development.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115559858","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}
Pub Date : 1988-06-07DOI: 10.1109/CPEM.1988.671341
H. Saito, A. Miyamoto, T. Morozumi, S. Yuta, M. Nakajima
In this paper, we propose a novel method for imaging the magnetic field as a vector quantity, applying CT technique to the electromagnetic induction phenomenon generated in a conductor moving in the magnetic field.
本文提出了一种将磁场成像为矢量的新方法，将CT技术应用于在磁场中运动的导体所产生的电磁感应现象。
{"title":"Reconstruction of Magnetic Flux Density as Vector Quantity by CT Technique","authors":"H. Saito, A. Miyamoto, T. Morozumi, S. Yuta, M. Nakajima","doi":"10.1109/CPEM.1988.671341","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671341","url":null,"abstract":"In this paper, we propose a novel method for imaging the magnetic field as a vector quantity, applying CT technique to the electromagnetic induction phenomenon generated in a conductor moving in the magnetic field.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"318 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122317576","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}
Pub Date : 1988-06-07DOI: 10.1109/CPEM.1988.671226
K. Kikuchi
The experimental results on the effect of the geometry of mount on permittivity of dielectric materials are described.The condition, ka=0, make the field distribution in the mount uniform. In case of ka>0.5, the mount has not uniform field and the experimental results lead to noticeable error.
{"title":"Optimum Dimention of Mount for Measurement of Permittivity","authors":"K. Kikuchi","doi":"10.1109/CPEM.1988.671226","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671226","url":null,"abstract":"The experimental results on the effect of the geometry of mount on permittivity of dielectric materials are described.The condition, ka=0, make the field distribution in the mount uniform. In case of ka>0.5, the mount has not uniform field and the experimental results lead to noticeable error.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122334021","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：