Pub Date : 1994-06-06DOI: 10.1109/PLASMA.1994.588926
V. Oreshkin, I.E. Gorel'chanik
{"title":"Magnetic field compression by hollow cylindrical gas puff liner","authors":"V. Oreshkin, I.E. Gorel'chanik","doi":"10.1109/PLASMA.1994.588926","DOIUrl":"https://doi.org/10.1109/PLASMA.1994.588926","url":null,"abstract":"","PeriodicalId":254741,"journal":{"name":"Proceedings of 1994 IEEE 21st International Conference on Plasma Sciences (ICOPS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134007066","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 : 1994-06-06DOI: 10.1109/PLASMA.1994.588859
H. Snyder, C.B. Fledderrnann, J. Gahl
{"title":"Development Of A Low-frequency Plasma Torch For The Destruction Of Toxic Solvents","authors":"H. Snyder, C.B. Fledderrnann, J. Gahl","doi":"10.1109/PLASMA.1994.588859","DOIUrl":"https://doi.org/10.1109/PLASMA.1994.588859","url":null,"abstract":"","PeriodicalId":254741,"journal":{"name":"Proceedings of 1994 IEEE 21st International Conference on Plasma Sciences (ICOPS)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134540485","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 : 1994-06-06DOI: 10.1109/PLASMA.1994.589059
C. Grabowski, J. Gahl, E. Schamiloglu, D. Shiffler
High power microwave experiments using a long pulse accelerator with a backward wave oscillator (BWO) are continuing at the Pulsed Power and Plasma Science Laboratory of the University of New Mexico. The accelerator used in this study is a Physics International Pulserad 110A, which has a 2.75 kJ Marx bank as its primary energy store. In order to convert this accelerator to long pulse operation, the original pulse forming line was placed with a parallel L-C network, thus giving rise to a new cathode voltage, impedance, and pulse duration for the Pulserad 110A of 500 kV, 40 {Omega}, and 450--550 ns, respectively. The accelerator drives an electron gun, which has an annular, knife-edge, carbon cathode that is approximately 2 cm in diameter. The relativistic beam that is emitted from the gun is injected into a slow wave structure (SWS) to generate X-band microwaves. Currently, the SWS is configured such that there is a non-uniform variation in the amplitude of the ripples in the wall, similar to companion short-pulse experiments that are being conducted here. Microwave power levels in recent experiments have been as high as 140 MW with pulse durations ranging from 16 to 32 ns. Damage observed inside themore » SWS after experiments indicates that a significant amount of breakdown is occurring. High rf fields may be a major cause of the early cessation of microwave radiation. The system design will be presented along with data from further vacuum SWS experiments. Detailed plans for plasma-filled SWS experiments and preliminary data from these experiments will also be presented.« less
{"title":"Progress In The Long-pulse BWO Experiment At The University Of New Mexico","authors":"C. Grabowski, J. Gahl, E. Schamiloglu, D. Shiffler","doi":"10.1109/PLASMA.1994.589059","DOIUrl":"https://doi.org/10.1109/PLASMA.1994.589059","url":null,"abstract":"High power microwave experiments using a long pulse accelerator with a backward wave oscillator (BWO) are continuing at the Pulsed Power and Plasma Science Laboratory of the University of New Mexico. The accelerator used in this study is a Physics International Pulserad 110A, which has a 2.75 kJ Marx bank as its primary energy store. In order to convert this accelerator to long pulse operation, the original pulse forming line was placed with a parallel L-C network, thus giving rise to a new cathode voltage, impedance, and pulse duration for the Pulserad 110A of 500 kV, 40 {Omega}, and 450--550 ns, respectively. The accelerator drives an electron gun, which has an annular, knife-edge, carbon cathode that is approximately 2 cm in diameter. The relativistic beam that is emitted from the gun is injected into a slow wave structure (SWS) to generate X-band microwaves. Currently, the SWS is configured such that there is a non-uniform variation in the amplitude of the ripples in the wall, similar to companion short-pulse experiments that are being conducted here. Microwave power levels in recent experiments have been as high as 140 MW with pulse durations ranging from 16 to 32 ns. Damage observed inside themore » SWS after experiments indicates that a significant amount of breakdown is occurring. High rf fields may be a major cause of the early cessation of microwave radiation. The system design will be presented along with data from further vacuum SWS experiments. Detailed plans for plasma-filled SWS experiments and preliminary data from these experiments will also be presented.« less","PeriodicalId":254741,"journal":{"name":"Proceedings of 1994 IEEE 21st International Conference on Plasma Sciences (ICOPS)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126576385","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 : 1994-06-06DOI: 10.1109/PLASMA.1994.588794
S. Douglass, B. Weber, C. Eddy, M. Lampe, G. Joyce, W. Manheimer
utllired to r a varier) ot etching applications riiciuding etching of 111V coinpound> I ? / and .;illcon etching !31 A thorough underitaiiciiiig of thr plavna pioperties. though. i:, helptul 11: obraining uiri'ul etching characrei istic Tc; betrei uiidertand the plasma properties in particuiai the ion energies. ion deiisirie and the relnpei-ature ot the neutral specieb. ;I serich ot tatistidly deigned expel iinent has been undertaken. 'Thi work examineh 41-1 argon-SF(, discharge used foi etching i!~con The ion energy diti-ibution i s " x u r e d u m g laser induced Huorehcence spectroscopy on d metasrablr argon ion species. The neutral temperarui c is ineaxured usitig high-resolurioi; Doppler-broadened einiion spectroxopy on the argon atom and the ion densit! i s intmured usiiig Langmuir probes. Thehe rneilsurernerits are prrwired for a 12.5 i m discharge pi-oduced using a inicrowave cavit); excited in the TE:,, inode Thr nominal experimental conditions are 2.5 inToi-i-. 225 Watts microwave power. an argon How of 20 sccin with 1Cl'i SF,. These conditions are varied over a pressure range froin 1 inTorr to 4 inTorimcl a microwave power range fi-oin 100 to 350 Watts. The SF, flow is varied from 5% to 15% of the argon flow, such that the total gas flowrate varies hom 21 sccm to 23 sccm. The development of statisticaliexperimental model5 which relate input variable values to internal plaina quantities is expected to be useful in the control of plasind processing. The reults will he presented as response surface inetliodology inodcls.
{"title":"Diagnostic Characterization And Theoretical Modeling Of Ecr Plasmas","authors":"S. Douglass, B. Weber, C. Eddy, M. Lampe, G. Joyce, W. Manheimer","doi":"10.1109/PLASMA.1994.588794","DOIUrl":"https://doi.org/10.1109/PLASMA.1994.588794","url":null,"abstract":"utllired to r a varier) ot etching applications riiciuding etching of 111V coinpound> I ? / and .;illcon etching !31 A thorough underitaiiciiiig of thr plavna pioperties. though. i:, helptul 11: obraining uiri'ul etching characrei istic Tc; betrei uiidertand the plasma properties in particuiai the ion energies. ion deiisirie and the relnpei-ature ot the neutral specieb. ;I serich ot tatistidly deigned expel iinent has been undertaken. 'Thi work examineh 41-1 argon-SF(, discharge used foi etching i!~con The ion energy diti-ibution i s \" x u r e d u m g laser induced Huorehcence spectroscopy on d metasrablr argon ion species. The neutral temperarui c is ineaxured usitig high-resolurioi; Doppler-broadened einiion spectroxopy on the argon atom and the ion densit! i s intmured usiiig Langmuir probes. Thehe rneilsurernerits are prrwired for a 12.5 i m discharge pi-oduced using a inicrowave cavit); excited in the TE:,, inode Thr nominal experimental conditions are 2.5 inToi-i-. 225 Watts microwave power. an argon How of 20 sccin with 1Cl'i SF,. These conditions are varied over a pressure range froin 1 inTorr to 4 inTorimcl a microwave power range fi-oin 100 to 350 Watts. The SF, flow is varied from 5% to 15% of the argon flow, such that the total gas flowrate varies hom 21 sccm to 23 sccm. The development of statisticaliexperimental model5 which relate input variable values to internal plaina quantities is expected to be useful in the control of plasind processing. The reults will he presented as response surface inetliodology inodcls.","PeriodicalId":254741,"journal":{"name":"Proceedings of 1994 IEEE 21st International Conference on Plasma Sciences (ICOPS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131153561","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 : 1994-06-06DOI: 10.1109/PLASMA.1994.589019
S. Englert, T. Englert, J. Degnan, J. Gahl
{"title":"A Gas Puff Experiment For Partial Simulation Of Compact Toroid Formation On Marauder","authors":"S. Englert, T. Englert, J. Degnan, J. Gahl","doi":"10.1109/PLASMA.1994.589019","DOIUrl":"https://doi.org/10.1109/PLASMA.1994.589019","url":null,"abstract":"","PeriodicalId":254741,"journal":{"name":"Proceedings of 1994 IEEE 21st International Conference on Plasma Sciences (ICOPS)","volume":"280 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131668270","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 : 1994-06-06DOI: 10.1109/PLASMA.1994.588829
V. Kuklin, A. Kirichok
{"title":"The Mechanism D Wave-turbulent Stability In Nonequilibrium Systems","authors":"V. Kuklin, A. Kirichok","doi":"10.1109/PLASMA.1994.588829","DOIUrl":"https://doi.org/10.1109/PLASMA.1994.588829","url":null,"abstract":"","PeriodicalId":254741,"journal":{"name":"Proceedings of 1994 IEEE 21st International Conference on Plasma Sciences (ICOPS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127521252","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 : 1994-06-06DOI: 10.1109/PLASMA.1994.588907
M. Maeyama, S. Iwashita, K. Hoshi, S. Kobayashi, N. Sato, E. Hotta
{"title":"Toroidal Equilibrium And Stability Analysis Of Rfp Plasma","authors":"M. Maeyama, S. Iwashita, K. Hoshi, S. Kobayashi, N. Sato, E. Hotta","doi":"10.1109/PLASMA.1994.588907","DOIUrl":"https://doi.org/10.1109/PLASMA.1994.588907","url":null,"abstract":"","PeriodicalId":254741,"journal":{"name":"Proceedings of 1994 IEEE 21st International Conference on Plasma Sciences (ICOPS)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133761649","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 : 1994-06-06DOI: 10.1109/PLASMA.1994.588903
R. Hoyt, J. Scheuer, K. Schoenberg, R. Gerwin, R. Moses, I. Henins
{"title":"Coaxial Plasma Thruster With Applied Magnetic Nozzle Fields","authors":"R. Hoyt, J. Scheuer, K. Schoenberg, R. Gerwin, R. Moses, I. Henins","doi":"10.1109/PLASMA.1994.588903","DOIUrl":"https://doi.org/10.1109/PLASMA.1994.588903","url":null,"abstract":"","PeriodicalId":254741,"journal":{"name":"Proceedings of 1994 IEEE 21st International Conference on Plasma Sciences (ICOPS)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115473493","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 : 1994-06-06DOI: 10.1109/PLASMA.1994.588860
A. Rodrigo
The status of plasma physics in Latin America is reviewed. The review surveys the history and present situation of the regional activities in high-temperature plasma research, plasma astrophysics, and technological applications of plasma physics. In particular, it presents data on the trends of evolution of scientific staff, annual operating budget, and publication rate for the major Latin American plasma groups during the decade 1983-1992. On this basis, the prospects for further growth and the potential for regional contribution to the mainstream of international plasma research and development are discussed. >
{"title":"Plasma Physics In Latin America","authors":"A. Rodrigo","doi":"10.1109/PLASMA.1994.588860","DOIUrl":"https://doi.org/10.1109/PLASMA.1994.588860","url":null,"abstract":"The status of plasma physics in Latin America is reviewed. The review surveys the history and present situation of the regional activities in high-temperature plasma research, plasma astrophysics, and technological applications of plasma physics. In particular, it presents data on the trends of evolution of scientific staff, annual operating budget, and publication rate for the major Latin American plasma groups during the decade 1983-1992. On this basis, the prospects for further growth and the potential for regional contribution to the mainstream of international plasma research and development are discussed. >","PeriodicalId":254741,"journal":{"name":"Proceedings of 1994 IEEE 21st International Conference on Plasma Sciences (ICOPS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115593961","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 : 1994-06-06DOI: 10.1109/PLASMA.1994.588730
B. E. Meierovich
The plasma universe approach to the structure of the universe considers space to be filled with a network of currents which can undergo pinch compression. The equilibrium structures of such currents are treated in the same way as the structure of laboratory pinches. The difference, for the galactic case, is that gravitational interaction forces between the particles must be included into the analysis. Straightforward calculation shows that in equilibrium the energy of magnetic compression and gravitational compression must be exactly compensated by the energy of electrostatic repultion and kinetic energies of the charges. If gravitational energy is much smaller than the magnetic energy, we get balance of energies for relativistic pinch systems. In nonrelativistic limit the balance is reduced to the well known Bennet relation.
{"title":"Equilibrium Of Intergalactic Currents In The Plasma Universe","authors":"B. E. Meierovich","doi":"10.1109/PLASMA.1994.588730","DOIUrl":"https://doi.org/10.1109/PLASMA.1994.588730","url":null,"abstract":"The plasma universe approach to the structure of the universe considers space to be filled with a network of currents which can undergo pinch compression. The equilibrium structures of such currents are treated in the same way as the structure of laboratory pinches. The difference, for the galactic case, is that gravitational interaction forces between the particles must be included into the analysis. Straightforward calculation shows that in equilibrium the energy of magnetic compression and gravitational compression must be exactly compensated by the energy of electrostatic repultion and kinetic energies of the charges. If gravitational energy is much smaller than the magnetic energy, we get balance of energies for relativistic pinch systems. In nonrelativistic limit the balance is reduced to the well known Bennet relation.","PeriodicalId":254741,"journal":{"name":"Proceedings of 1994 IEEE 21st International Conference on Plasma Sciences (ICOPS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124205070","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}
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