发布求助
文献互助 智能选刊 最新文献

1987 Twelth International Conference on Infrared and Millimeter Waves最新文献

筛选
英文 中文
Simulation for the operation characteristics of cusptron oscillators cusptron振荡器工作特性的仿真
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/IRMM.1987.9127084
S. Kuo, K. Tiong, P. E. Miller, Q. Ji, W. Namkung
{"title":"Simulation for the operation characteristics of cusptron oscillators","authors":"S. Kuo, K. Tiong, P. E. Miller, Q. Ji, W. Namkung","doi":"10.1109/IRMM.1987.9127084","DOIUrl":"https://doi.org/10.1109/IRMM.1987.9127084","url":null,"abstract":"The operation characteristics of cusptron tubes are studied. We have evaluated the functional dependences of the saturation efficiencies on the beam energy, and on the ratio of the outer and inner radii of the tubes for three different cyclotron harmonics, i.e. N0 = 8, 10 and 12, and for both π mode and 2π mode operation.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127527285","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
The high brightness synchrotron infrared facility at brookhaven national laboratory 布鲁克海文国家实验室的高亮度同步辐射红外设备
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/IRMM.1987.9126889
Gwyn P. Williams, P. Takacs, E. Kneedler, C. Hirschmugl, K. D. Moeller, Y. Chabal, F. Hoffmann
{"title":"The high brightness synchrotron infrared facility at brookhaven national laboratory","authors":"Gwyn P. Williams, P. Takacs, E. Kneedler, C. Hirschmugl, K. D. Moeller, Y. Chabal, F. Hoffmann","doi":"10.1109/IRMM.1987.9126889","DOIUrl":"https://doi.org/10.1109/IRMM.1987.9126889","url":null,"abstract":"The high brightness infrared synchrotron radiation facility at the National Synchrotron Light Source, Brookhaven National Laboratory, was turned on in May 1987. We describe in detail the experimental facilities provided on this source from the near infrared to the millimeter region. Theoretical calculations indicate that this source should be 100 to 1000 times brighter than a black body source in the range 40μm to 1 cm. We will report preliminary measurements of the beam intensity and source characteristics.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127603418","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
Higher order modes and crystallographic axis angular dependence of propagation in anisotropic pbn using a spectral matrix method 利用谱矩阵方法研究各向异性光子晶体bn中传播的高阶模式和晶体轴角依赖性
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/irmm.1987.9126948
A. Mostafa, C. Krowne, K. Zaki
{"title":"Higher order modes and crystallographic axis angular dependence of propagation in anisotropic pbn using a spectral matrix method","authors":"A. Mostafa, C. Krowne, K. Zaki","doi":"10.1109/irmm.1987.9126948","DOIUrl":"https://doi.org/10.1109/irmm.1987.9126948","url":null,"abstract":"A 4×4 field matrix method for layered structures is employed to numerically calculate the propagation constant γ for coupled microstrip on a highly anisotropic material, Pyrolitic boron nitride (PBN). This new technique is very versatile, and allows the determination of γ for arbitrary permittivity, principle axis crystallographic orientation θ. Even and odd mode propagation constants are found for θ = 0°, 45°, and 90°. The approach is fully dynamic, yielding the dispersion characteristics of each of the modes studied. Numerical data is provided in the microwave and millimeter wave regions.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127622651","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 measurement of FIR laser lines of metrological and astrophysical interest 具有计量学和天体物理学意义的FIR激光线频率测量
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/irmm.1987.9126913
N. Ioli, A. Moretti, D. Pereira, F. Strumia
{"title":"Frequency measurement of FIR laser lines of metrological and astrophysical interest","authors":"N. Ioli, A. Moretti, D. Pereira, F. Strumia","doi":"10.1109/irmm.1987.9126913","DOIUrl":"https://doi.org/10.1109/irmm.1987.9126913","url":null,"abstract":"The optically pumped FIR lasers are the most convenient sources of CW radiation in the 1 THz to 6 THz region. The frequency stability and reproducibility (a few parts in 10<sup>7</sup>) makes the FIR lasers a source suitable as a local oscillator for high sensitivity heterodyne spectrometers of astrophysical interest, and as a stable oscillator for Stark and Zeeman intracavity spectroscopy. Moreover the fine structure atomic transitions in the far infrared have a considerable practical interest. As an example, the fine structure transitions between the metastable triplet levels <sup>3</sup>P<inf>2</inf>, <sup>3</sup>P<inf>1</inf>, <sup>3</sup>P<inf>0</inf> of Magnesium and Calcium, at 0.6, 1.2, 1.5, and 3.1 THz respectively, are of relevant metrological interest, because they can be used as a reference for a new kind of absolute atomic frequency standards [1,2]; while the N<sup>+3</sup>P<inf>2</inf> – <sup>3</sup>P<inf>1</inf> transition, which has recently been measured in the laboratory by Cooksy et al. [3], is of particular interest from an astronomical point of view. The discovery of this transition in the interstellar medium seems to be possible, at least in principle.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"17 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120897639","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
Air-to-air applications for millimeter-wave communications 毫米波通信的空对空应用
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/irmm.1987.9126921
E. N. Barnhart
{"title":"Air-to-air applications for millimeter-wave communications","authors":"E. N. Barnhart","doi":"10.1109/irmm.1987.9126921","DOIUrl":"https://doi.org/10.1109/irmm.1987.9126921","url":null,"abstract":"The performance of millimeter-wave (MMW) communications techniques for air-to-air applications is reviewed. The anti-jam (AJ) and low-probability-of intercept (LPI) performance of a communications system resulting from the attenuative characteristics of the atmosphere in the 50–60 GHz band are characterized. The objective of the communications system design is to avoid traditional AJ and LPI techniques such as spread-spectrum modulation and narrow-beam antennas, resulting in a simple system with a robust and secure communications capability.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116511978","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
Ultrasonic search for the floppy-rigid transition in bulk se1–x gex glasses 块状se1-x - gex玻璃中软硬转变的超声搜索
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/irmm.1987.9127037
Hui Li, S. Yun, R. Cappelletti, P. Boolchand
{"title":"Ultrasonic search for the floppy-rigid transition in bulk se1–x gex glasses","authors":"Hui Li, S. Yun, R. Cappelletti, P. Boolchand","doi":"10.1109/irmm.1987.9127037","DOIUrl":"https://doi.org/10.1109/irmm.1987.9127037","url":null,"abstract":"No transitions occur in the room temperature longitudinal and transverse elastic constants of Se1-xGex glasses up to × = 0.30. The transverse elastic constant appears to saturate near × = 0.25. These results contradict a random network model for these glasses which predicts a transition at ×p =0.20, but they are not inconsistent with a molecular cluster model.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"514 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116562354","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
Far-forward scattering from a tokamak piasma with a tunable gyrotron 带有可调谐回旋管的托卡马克等离子体的远前散射
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/irmm.1987.9127066
G. Brand, P. Fekete, K. J. Moore
{"title":"Far-forward scattering from a tokamak piasma with a tunable gyrotron","authors":"G. Brand, P. Fekete, K. J. Moore","doi":"10.1109/irmm.1987.9127066","DOIUrl":"https://doi.org/10.1109/irmm.1987.9127066","url":null,"abstract":"GYROTRON III (1) can provide more than 10 W of cw power over the frequency range 75 to 330 GHz. It has been used as a source in a millimeter-wave far-forward scattering experiment to observe scattering from density fluctuations associated with Mirnov oscillations in the department's TORTUS tokamak (2).","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115790137","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 full band 18–225 GHz scalar network analyzer 全频带18-225 GHz标量网络分析仪
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/irmm.1987.9127061
P. Goy, M. Gross, J. Raimond
{"title":"A full band 18–225 GHz scalar network analyzer","authors":"P. Goy, M. Gross, J. Raimond","doi":"10.1109/irmm.1987.9127061","DOIUrl":"https://doi.org/10.1109/irmm.1987.9127061","url":null,"abstract":"A Millimeter Scalar Network Analyzer (MSNA), based on a new concept, permits to cover the whole 18-225 GHz interval without any drawer to change, and avoiding the problem of the many expensive sources usually needed. Transmission measurements are performed very easily at any frequency within minutes, with a dynamic range over 6odB up to 160 GHz, and above 40 dB up to 225 GHz. Small power attenuation changes (down to 10−4) can be detected when applying an external modulation. Many applications concern the test of various millimeter components (wave guides, attenuators, cavities, antennas…), the characterization of materials (dielectrics…), the spectroscopy of solids, atoms and molecules.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124366638","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
A producible 94 GHz detector circuit for large-scale vidicon applications 一个可生产的94ghz探测器电路，用于大规模视像应用
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/irmm.1987.9126939
H. G. Henry, R. R. Shaller, R. Freitag, M. Cohn, W. Waters
{"title":"A producible 94 GHz detector circuit for large-scale vidicon applications","authors":"H. G. Henry, R. R. Shaller, R. Freitag, M. Cohn, W. Waters","doi":"10.1109/irmm.1987.9126939","DOIUrl":"https://doi.org/10.1109/irmm.1987.9126939","url":null,"abstract":"Described is a 94 GHz diode detector circuit/antenna element which employs a 700 GHz fco GaAs Schottky diode fabricated with a fully planar, ion implantation process for high yield, uniformity, and repeatability. This was developed as a single “pixel” for a large focal plane array containing thousands of such elements fabricated on a number of large GaAs chips (“tiles”). Measured 94 GHz current sensitivity was 3–4 μA/μW with TSS of −50 dBm (BW=1MHz).","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"19 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125566394","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
Complex permittivity of water between 0 and 30 thz 水的复介电常数在0到30太赫兹之间
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/irmm.1987.9127000
T. Manabe, H. Liebe, G. Hufford
{"title":"Complex permittivity of water between 0 and 30 thz","authors":"T. Manabe, H. Liebe, G. Hufford","doi":"10.1109/irmm.1987.9127000","DOIUrl":"https://doi.org/10.1109/irmm.1987.9127000","url":null,"abstract":"A model of the complex permittivity for liquid water assumes a double-Debye relaxation model supplemented by two far-infrared resonance terms. The scheme is carried out by applying nonlinear least-squares fitting to the dielectric data reported below 30 THz.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131566347","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: 26
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信