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Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)最新文献

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Recent advances in the study of a long pulse relativistic backward wave oscillator 长脉冲相对论性倒波振荡器的研究进展
Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358) Pub Date : 1999-06-27 DOI: 10.1109/PPC.1999.823642
F. Hegeler, E. Schamiloglu, S. Korovin, V. Rostov
{"title":"Recent advances in the study of a long pulse relativistic backward wave oscillator","authors":"F. Hegeler, E. Schamiloglu, S. Korovin, V. Rostov","doi":"10.1109/PPC.1999.823642","DOIUrl":"https://doi.org/10.1109/PPC.1999.823642","url":null,"abstract":"Laser interferometry was recently used to diagnose plasma formation and evolution in the slow wave structure (SWS) of a relativistic backward wave oscillator (BWO) during the course of microwave generation. The results indicated that plasma from the cutoff neck inlet contributed to the termination of the high power microwave pulse. In an effort to mitigate this pulse shortening effect, the authors have replaced the cutoff neck with a Bragg reflector. As part of these studies, they have observed the cross-excitation instability because of the particularly shallow-ripple SWS used. They present results from recent experiments performed with the long pulse relativistic BWO, including the implementation of a hybrid-hard tube BWO at the University of New Mexico (UNM).","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"29 1","pages":"825-828 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85287376","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
Three channel pulse power system for underwater acoustic source 水声声源三通道脉冲电源系统
Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358) Pub Date : 1999-06-27 DOI: 10.1109/PPC.1999.823627
P. Adair, L. H. Fry, R. Williams
{"title":"Three channel pulse power system for underwater acoustic source","authors":"P. Adair, L. H. Fry, R. Williams","doi":"10.1109/PPC.1999.823627","DOIUrl":"https://doi.org/10.1109/PPC.1999.823627","url":null,"abstract":"A three channel pulsed power system has been developed at the US Navy Coastal Systems Station in Panama City, Florida to provide power for underwater acoustic sources. In the present configuration, the system is capable of providing continuous operation at repetition rates up to 15 Hz and with energies up to 1.5 kJ per pulse per channel into a broad range of loads including spark-type underwater acoustic sources. The system includes three independent banks each of which contain two switcher-type power supplies, each capable of an energy output of 8 kJ/s at 3.2 kV. A highly flexible control system allows the construction of pulse trains with arbitrary trigger timings for each bank. High power silicon controlled rectifiers (SCRs) are used to form the pulse trains. The system is currently located on the deck of a remote controlled QST-35A US Navy target drone boat and provides power for three underwater spark gap acoustic sources (sparkers). The system was recently demonstrated at an Advanced Concept Technology Demonstration (ACTD) military exercise in Newfoundland, Canada.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"20 1","pages":"769-772 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85390141","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
With record magnetic fields to the 21st Century 带着创纪录的磁场到达21世纪
Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358) Pub Date : 1999-06-27 DOI: 10.1109/PPC.1999.823621
B. A. Boyko, A. Bykov, M. I. Dolotenko, N. P. Kolokolchikov, I. M. Markevtsev, O. Tatsenko, K. Shuvalov
{"title":"With record magnetic fields to the 21st Century","authors":"B. A. Boyko, A. Bykov, M. I. Dolotenko, N. P. Kolokolchikov, I. M. Markevtsev, O. Tatsenko, K. Shuvalov","doi":"10.1109/PPC.1999.823621","DOIUrl":"https://doi.org/10.1109/PPC.1999.823621","url":null,"abstract":"Many years work on the development of magnetocumulative generators of ultra-high magnetic fields has led to the creation of the cascade MC-1 generator, in which a magnetic field of more than 28 MGs was recorded in 1998. This device consists of a generator solenoid (the first cascade) with internal and external diameters of 175 mm and 200 mm respectively and a length of 500 mm, and two internal cascades with diameters of 28/spl times/35 mm and 12/spl times/17 mm and a length of /spl sim/200 mm. One-cascade system of explosive compression, consisting of the main HE-charge with diameters of 360/spl times/650 mm, a length of 350 mm and a mass of /spl sim/170 kg, steel cylinder-impactor with an external diameter of 356 mm and a thickness of 7 mm, and internal HE-charge with diameters of 200/spl times/300 mm and a length of 280 mm, is located on the outside of the solenoid. The MC-1 generator solenoid is powered with a current of 4-5 MA. MC-1 generator operation time (without powering time and HE-charge detonation time) is about 15 /spl mu/s, maximum liner implosion velocity is more than 6 km/s, the magnetic field derivative reaches values of /spl sim/5 10/sub 13/ Gs/s. The diameter of the final field volume is 24 mm, its length is /spl sim/100 mm.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"27 1","pages":"746-749 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83362856","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: 10
On perspectives of D-T plasma ignition at quasi-adiabatic compression in Z-/spl Theta/ pinch geometry 准绝热压缩下D-T等离子体点火的Z-/spl θ /捏缩几何研究
Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358) Pub Date : 1999-06-27 DOI: 10.1109/PPC.1999.823624
V. Yermolovich, V. Demidov, A. V. Ivanovsky, V. Karelin, V. Selemir, A. Orlov
{"title":"On perspectives of D-T plasma ignition at quasi-adiabatic compression in Z-/spl Theta/ pinch geometry","authors":"V. Yermolovich, V. Demidov, A. V. Ivanovsky, V. Karelin, V. Selemir, A. Orlov","doi":"10.1109/PPC.1999.823624","DOIUrl":"https://doi.org/10.1109/PPC.1999.823624","url":null,"abstract":"The stability of adiabatic compression of previously heated magnetized plasma by a longitudinal magnetic field is investigated at different ways of its amplification. Is shown, that tenfold radial compression is possible in Z-/spl Theta/ pinch geometry. In frameworks of 1.5-D equations in MGD approximation the perspectives of D-T plasma ignition are analyzed at quasi-adiabatic compression by a longitudinal magnetic field of Z-/spl Theta/ pinch. As criterion of ignition the duple value of a system equal 0.31+1 was considered.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"94 1","pages":"758-761 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90863631","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
Plug and play solid state switching system for laser applications 即插即用固体开关系统的激光应用
Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358) Pub Date : 1999-06-27 DOI: 10.1109/PPC.1999.825434
A. Welleman, U. Schlapbach, E. Ramezani
{"title":"Plug and play solid state switching system for laser applications","authors":"A. Welleman, U. Schlapbach, E. Ramezani","doi":"10.1109/PPC.1999.825434","DOIUrl":"https://doi.org/10.1109/PPC.1999.825434","url":null,"abstract":"Reliable, long life, and low maintenance switching of 3-5 kA (to 5 kA//spl mu/s) for repetitive short pulses (5-100 /spl mu/s) for applications such as laser switching and driving pulse shaping transformers has been limited in the past by the availability of switching system technologies. A new switching system is presented that increases peak current and di/dt capabilities and reduces dynamic energy loss. This solid state system uses a very fast triggering circuit. Since the power supply for the trigger-unit is a separate unit, the system has \"plug and play\" operation. The quick and strong current source gate-unit, in combination with the low inductance thyristor housing, allows very fast turn-on with low losses. Blocking voltages of 4.5 kV (3 kVdc) per device are possible, and with simple series connections, higher ratings can be achieved. The simplicity of the power supply and the integrated trigger-unit as well as the use of optimized silicon wafer geometries, leads to a more cost effective solution compared to actual solid state systems. Capabilities are discussed with respect to reliable management of pulse widths, repetition rates, voltage levels and dynamic losses.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"13 1","pages":"150-152 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89450315","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
Water treatment by pulsed streamer discharges 脉冲流光排放水处理
Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358) Pub Date : 1999-06-27 DOI: 10.1109/PPC.1999.825512
I. Lisitsyn, H. Nomiyama, S. Katsuki, H. Akiyama
{"title":"Water treatment by pulsed streamer discharges","authors":"I. Lisitsyn, H. Nomiyama, S. Katsuki, H. Akiyama","doi":"10.1109/PPC.1999.825512","DOIUrl":"https://doi.org/10.1109/PPC.1999.825512","url":null,"abstract":"The reliable and durable reactor for wastewater treatment by pulsed streamer discharges is designed and tested. Uniform streamer discharges were obtained in water at pulsed electric loading. The volume of these discharges exceeds 200 cm/sup 3/ and the energy delivered to the discharge reached 40-400 J depending on the applied voltage. High amplitude of the voltage pulse applied to the reactor requires improved electric insulation to prevent the flashovers along the reactor surface both in water and air. High energy deposition due to high discharge current adds the requirements to the mechanical durability of the system. Small-size reactor with the volume of approximately 1 liter withstands successfully both high electrical and mechanical stresses. The reactor is designed for research purposes, however it can be upgraded to use in high repetition-rate regime necessary for applications.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"14 1","pages":"468-471 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87784398","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: 30
A time-dependent one-dimensional model of ablation-controlled arcs in electrothermal launchers 电热发射装置中烧蚀控制电弧的一维时变模型
Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358) Pub Date : 1999-06-27 DOI: 10.1109/PPC.1999.823601
Baoming Li, Hong-zhi Li
{"title":"A time-dependent one-dimensional model of ablation-controlled arcs in electrothermal launchers","authors":"Baoming Li, Hong-zhi Li","doi":"10.1109/PPC.1999.823601","DOIUrl":"https://doi.org/10.1109/PPC.1999.823601","url":null,"abstract":"High-pressure discharges in ablative capillaries are used to couple electrically stored energy sources to hot plasma jets efficiently, for example, as plasma sources in launchers. A time-dependent quasi-one-dimensional model is developed for studying high-pressure discharges in ablative capillaries. As opposed to most of the previous work, a modified method calculating thermodynamic and transport properties of multi-component plasma under LTE conditions and a semi-empirical scaling law for the fraction of blackbody radiation that is transmitted through the ablating vapor for insulators under high heat flux conditions are utilized. With regard to the numerical code, the authors have examined the effects of the explicit two-step scheme of MacCormack and implicit continuous-fluid Eulerian scheme, respectively. The calculations show that some of the well-known experimental features of these kinds of discharges are confirmed by the numerical solutions obtained here. Numerical simulation was compared against experimental results obtained by the authors.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"3 1","pages":"670-672 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88024986","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
NO/sub x/ and SO/sub 2/ removal by pulsed power at a thermal power plant 热电厂脉冲功率去除NO/sub x/和SO/sub 2/
Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358) Pub Date : 1999-06-27 DOI: 10.1109/PPC.1999.823772
S. Tsukamoto, T. Namihira, D. Wang, S. Katsuki, H. Akiyama, E. Nakashima, A. Sato, Y. Uchida, M. Koike
{"title":"NO/sub x/ and SO/sub 2/ removal by pulsed power at a thermal power plant","authors":"S. Tsukamoto, T. Namihira, D. Wang, S. Katsuki, H. Akiyama, E. Nakashima, A. Sato, Y. Uchida, M. Koike","doi":"10.1109/PPC.1999.823772","DOIUrl":"https://doi.org/10.1109/PPC.1999.823772","url":null,"abstract":"Recently various methods involving gas discharges and electron beams have been studied for the removal of NO/sub x/ and SO/sub 2/ from flue gases. The recent development of repetitive pulsed power generators gives the pulsed streamer corona discharges a chance of success in the removal of NO/sub x/ and SO/sub 2/. Experiments for the removal of NO/sub x/ and SO/sub 2/ using actual flue gases were performed at a thermal power plant. The results showed that about 90% of NO and about 50% of SO/sub 2/ were removed at a flow rate of 0.8 l/min and a repetition rate of 7 pulses per second (pps). The removal ratio of NO varied inversely proportional to the gas flow rate. The energy efficiency of NO removal was 900 /spl mu/mol/Wh when 50% of NO was removed.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"1993 1","pages":"1330-1333 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89039105","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: 7
Wide-range medical ozonator with precise low-concentration ozone generation 宽范围医用臭氧发生器，精确低浓度臭氧生成
Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358) Pub Date : 1999-06-27 DOI: 10.1109/PPC.1999.823796
S. Buranov, V. Gorokhov, V. Karelin, P. B. Repin
{"title":"Wide-range medical ozonator with precise low-concentration ozone generation","authors":"S. Buranov, V. Gorokhov, V. Karelin, P. B. Repin","doi":"10.1109/PPC.1999.823796","DOIUrl":"https://doi.org/10.1109/PPC.1999.823796","url":null,"abstract":"Investigation results of dielectric barrier discharge with preliminary gap ionization and development of medical ozonator with O/sub 3/ output concentrations in the range from 10 to 10000 /spl mu/g/1 are presented. Thin structure of microchannels and their current characteristics are studied. Wide dynamic range is provided by variations of pulse repetition rate of discharge powering. High precision of ozone synthesis is performed at the expense of dielectric barrier discharge initiation and application of short powering pulses.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"110 1","pages":"1421-1424 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75997057","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
Active former of monocycle high-voltage subnanosecond pulses 单周期高压亚纳秒脉冲有源发生器
Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358) Pub Date : 1999-06-27 DOI: 10.1109/PPC.1999.823805
V. Shpak, M. R. Oulmascoulov, S. Shunailov, M. Yalandin
{"title":"Active former of monocycle high-voltage subnanosecond pulses","authors":"V. Shpak, M. R. Oulmascoulov, S. Shunailov, M. Yalandin","doi":"10.1109/PPC.1999.823805","DOIUrl":"https://doi.org/10.1109/PPC.1999.823805","url":null,"abstract":"Experiments have been performed to investigate the operating modes of a generator of 2/spl times/500-ps bipolar high-voltage, nanosecond pulses with the double amplitude (270 kV) close to that of the charge pulse of the RADAN-303 nanosecond driver. The generator contains an additional peaker shortening the risetime of the starting pulse and a pulse-forming line with two untriggered gas gaps operating with a total jitter of 200 ps.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"76 1","pages":"1456-1459 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76038947","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: 18
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