Academic literature on the topic 'Paschen curve'

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Journal articles on the topic "Paschen curve"

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BURM, K. T. A. L. "Paschen curves for metal plasmas." Journal of Plasma Physics 78, no. 2 (December 16, 2011): 199–202. http://dx.doi.org/10.1017/s0022377811000572.

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AbstractThe Paschen curve for D.C. electric field-driven sources like conductively coupled plasmas is examined. The considered plasma gases are metals. The minimum breakdown requirement is related to the ionization energy and the collision cross section of the considered plasma. The dominant collisions to consider may depend on the plasma source.
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Lee, S. M., Y. S. Seo, and J. K. Lee. "Paschen breakdown curve by one-dimensional PIC-MCC simulation." Computer Physics Communications 177, no. 1-2 (July 2007): 132. http://dx.doi.org/10.1016/j.cpc.2007.02.057.

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Burm, K. T. A. L. "Calculation of the Townsend Discharge Coefficients and the Paschen Curve Coefficients." Contributions to Plasma Physics 47, no. 3 (May 2007): 177–82. http://dx.doi.org/10.1002/ctpp.200710025.

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Kudryavtsev, A. A., and L. D. Tsendin. "Townsend discharge instability on the right-hand branch of the Paschen curve." Technical Physics Letters 28, no. 12 (December 2002): 1036–39. http://dx.doi.org/10.1134/1.1535495.

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Theis, Joseph G., Gregory R. Werner, Thomas G. Jenkins, and John R. Cary. "Computing the Paschen curve for argon with speed-limited particle-in-cell simulation." Physics of Plasmas 28, no. 6 (June 2021): 063513. http://dx.doi.org/10.1063/5.0051095.

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Xu, Liang, Alexander V. Khrabrov, Igor D. Kaganovich, and Timothy J. Sommerer. "Investigation of the Paschen curve for helium in the 100–1000 kV range." Physics of Plasmas 24, no. 9 (September 2017): 093511. http://dx.doi.org/10.1063/1.5000387.

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Ledernez, L., F. Olcaytug, and G. Urban. "Paschen Curve and Film Growth in Low Pressure Capacitively Coupled Magnetron Plasma Polymerization." Contributions to Plasma Physics 52, no. 4 (May 2012): 283–88. http://dx.doi.org/10.1002/ctpp.201100054.

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Savic, Marija, Marija Radmilovic-Radjenovic, Milovan Suvakov, Srdjan Marjanovic, Dragana Maric, and Zoran Lj Petrovic. "On Explanation of the Double-Valued Paschen-Like Curve for RF Breakdown in Argon." IEEE Transactions on Plasma Science 39, no. 11 (November 2011): 2556–57. http://dx.doi.org/10.1109/tps.2011.2159244.

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Hasan, Mazin H. "Electrical glow discharges and plasma parameter of planar sputtering system for silver target." Iraqi Journal of Physics (IJP) 16, no. 37 (September 11, 2018): 65–72. http://dx.doi.org/10.30723/ijp.v16i37.77.

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DC planar sputtering system is characterized by varying discharge potential of (250-2000 volt) and Argon gas pressures of (3.5×10-2 – 1.5) mbar. The breakdown voltage for silver electrode was studied with a uniform electric field at different discharge distances, as well as plasma parameters. The breakdown voltage is a product of the Argon gas pressure inside the chamber and gab distance between the electrodes, represent as Paschen curve. The Current-voltage characteristics curves indicate that the electrical discharge plasma is working in the abnormal glow region. Plasma parameters were found from the current-voltage characteristics of a single probe positioned at the inter-cathode space. Typical values of the electron temperature and the electron density are in the range of (2.93 –5.3) eV and (10-16 -10-17) m-3 respectively.
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Scholfield, D. W., J. M. Gahl, and B. W. Mullins. "Investigation of the Paschen curve of nitrogen via the application of nanosecond pulsed electromagnetic radiation." Journal of Applied Physics 76, no. 3 (August 1994): 1469–75. http://dx.doi.org/10.1063/1.357721.

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Dissertations / Theses on the topic "Paschen curve"

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SILVA, Suelen Holder de Morais e. "Aplicação de técnicas de elementos finitos para mapeamento de campos elétricos sobre cavidades internas a isoladores poliméricos de 13.8 KV." Universidade Federal de Pernambuco, 2013. https://repositorio.ufpe.br/handle/123456789/13336.

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Submitted by Daniella Sodre (daniella.sodre@ufpe.br) on 2015-04-17T13:50:00Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) DISSERTAÇÃO Suelen Holder de Morais e Silva.compressed.pdf: 3104256 bytes, checksum: c6c60b6a54b82f4cb45a7ce2e70088ad (MD5)
Made available in DSpace on 2015-04-17T13:50:00Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) DISSERTAÇÃO Suelen Holder de Morais e Silva.compressed.pdf: 3104256 bytes, checksum: c6c60b6a54b82f4cb45a7ce2e70088ad (MD5) Previous issue date: 2013-06-21
CNPq
Um dos problemas relacionados com a interrupção do fornecimento de energia elétrica é o colapso do sistema de isolamento das linhas de distribuição. Com o avanço tecnológico foram adotados novos materiais, como o polímero, que possuem características superiores aos já utilizados. No entanto, esses isoladores, em seu processo de fabricação, vêm apresentando cavidades em seu interior. Essas cavidades podem ser responsáveis pelo desgaste prematuro do isolador, já que, no interior delas podem ocorrer descargas parciais. Com o objetivo de identificar a possibilidade do surgimento dessas descargas foi analisada uma amostra de 85 isoladores poliméricos na classe de tensão de 15 kV, os quais apresentam cavidades internas. As análises foram realizadas utilizando-se resultados de ensaios de raios X para dimensionamento das cavidades e software de elementos finitos para mapeamento dos campos elétricos. Essas análises tiveram como objetivo a classificação da amostra em dois grupos, sendo o primeiro relacionado com os que apresentam condições propícias ao surgimento de descargas, e o segundo associado a isoladores nos quais as condições impostas não se apresentam propícias ao surgimento das mesmas. Com base nesta classificação e utilizando como dados registros de ultrassom obtidos em laboratório, seria desenvolvido um novo processo de diagnóstico, com o auxílio de técnica de reconhecimento de padrões, no entanto os resultados obtidos indicaram que os campos elétricos impostos às cavidades não são suficientes para iniciar descargas parciais internas, inviabilizando a concepção do processo de diagnóstico.
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Nechmi, Houssem Eddine. "Recherche de gaz/mélange gazeux sans hexafluorure de soufre pour des applications haute tension." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEC051.

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Dans l’état actuel des techniques utilisées pour l’isolation gazeuse des systèmes d’énergie électrique à haute tension, l’hexafluorure de soufre (SF6) tient une place prépondérante en raison de ses performances diélectriques et chimiques (bonne tenue diélectrique, point d'ébullition bas, stabilité chimique, non toxicité, etc.) ; il est l’un des meilleurs isolants gazeux connus à ce jour. Il est principalement utilisé dans les appareils de coupure pour l’extinction de l’arc électrique, les lignes de transmission à isolation gazeuse et autres équipements de puissance. Cependant, de par sa taille excessive, sa durée de vie trop importante et son grand effet radiatif, la molécule de SF6 constitue un agent aggravant de l’effet de serre avec un potentiel de réchauffement global (PRG ou GWP en anglais) très élevé (23900 fois supérieur à celui du CO2). Ainsi, les recommandations internationales (COP3) et européennes (règlement (UE) n°517/2014) tendent à restreindre très fortement, voire interdire son utilisation pour préserver l’environnement. Depuis, une tâche importante a été engagée par les industriels pour trouver d’autres gaz ou mélanges de substitution avec moins d’impact sur l’environnement et des exigences diélectriques comparables ou supérieures à celles du SF6. Les candidats les plus prometteurs appartiennent tous au groupe des molécules poly-fluorées (CF3I, Perfluorinated Ketones, Octafluorotetra-hydrofuran, Hydrofluoroolefin (HFOs) ou heptafluoro-iso-butyronitrile(Fluoronitriles)), Ils offrent tous une tenue diélectrique entre 1.2 et 2.71 par rapport au SF6. Ces molécules candidates ouvrent des perspectives intéressantes pour la substitution de SF6 dans l’appareillage sous enveloppe métallique destiné pour le réseau T&D haute tension. Leur principal inconvénient réside dans leur masse moléculaire élevée, ce qui implique une température de fonctionnement plus élevée par rapport au SF6. Ce travail porte sur l’étude expérimentale des performances diélectriques des mélanges de Fluoronitriles-CO2. Les paramètres intrinsèques de l’avalanche électronique sont identifiés à partir des courants de la décharge stationnaire de Townsend. L’évaluation de ces courants a permis d’extraire le coefficient d’ionisation effectif pour différents mélanges de Fluoronitriles. Une comparaison du potentiel d’isolation de ces mélanges avec celui du SF6 pur, dans différentes géométries électrodes (sphère-plan, pointe-plan, sphère-sphère, système avec le profil de Bruce), sur une large gamme de pression et pour toutes les formes d'ondes de tension normalisées pour d'isolation est présentée. Les résultats de mesures de tensions de claquage de ces mélanges et du CO2 pur, pour comparaison, dans un système coaxial cylindrique de taille réelle, similaire à celui utilisé dans les postes à enveloppe métallique (GIS - Gas Insulated Switchgear), sont également présentés ; une étude de l’influence de la surface et de l’état de surface des électrodes sur la tenue diélectrique en fonction de différents paramètres (pression, rugosité, surface effective, forme de tension et polarité, température de gaz …) est faite
SULPHUR hexafluoride, SF6, is the most common compressed gas used in high voltage power equipment since the 1950s and in HV transmissions and substations applications (GIS, GCB, GIL …), SF6 holds a prominent place because of its dielectric and chemical performance (high dielectric strength, non-toxicity, low condensation temperature, thermal stability, non-flammability, chemical inactivity with the other constituent materials of the apparatus, availability and moderate cost). It is one of the best insulators gas known today. Despite its excellent properties in both electrical insulation and current interruption performance, the excessive size, the radiative effect and atmospheric lifetime of SF6 molecule makes this gas an aggravating agent for the greenhouse gas effect, with a very high global warming potential (GWP) (23900 times higher than CO2). Thus, the international and European recommendations (COP 3) and (Regulation (EU) No 517/2014) respectively tend to strongly restrict or prohibit its use to preserve the environment. Since then, an important task was undertaken by manufacturers to find other gases or mixtures of substitution with less impact on the environment and dielectric performances comparable or superior to those of SF6. Naturally, the investigations were oriented towards halogenated products that have reduced GWP such as CF3I, Perfluorinated Ketones, Octafluorotetra-hydrofuran, Hydrofluoroolefin (HFOs) or heptafluoro-iso-butyronitrile (Fluoronitriles)), all offer a dielectric strength between 1.2 and 2.71 relative to SF6. These candidates open interesting perspectives for the substitution of SF6 in the GIS applications designed for high voltage T & D network. Their main disadvantage is their high molecular weight, which implies a higher operating temperature compared to SF6. This work deals with the experimental study of dielectric performance of Fluoronitriles CO2 mixtures. Intrinsic parameters of the measured steady state Townsend swarm currents are identified. The evaluation of the currents produce the effective ionization rate constant in different Fluoronitriles-CO2 mixtures. In addition, this work provides a conventional assessing of insulating performance with typical breakdown experiments, conducted for different field configurations over a wide pressure range and for all standard voltage waveforms. The experiments are conducted with different electrodes geometries namely plane-to-plane (Bruce profile), sphere-to-sphere, sphere-to-plane and rod-to-plane. AC and LI breakdown characteristics of CO2 and different Fluoronitriles /CO2 mixtures gas were experimentally analyzed in a real scale GIS coaxial test system. The main investigated parameters are the effect of roughness and effective surface area HV inner conductor on insulation performance, depending on various parameters (pressure, form and voltage polarity, gas temperature…)
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Books on the topic "Paschen curve"

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A cure for all diseases. London: Harper, 2008.

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A cure for all diseases. Leicester: Charnwood, 2009.

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Hill, Reginald. A cure for all diseases: A novel in six volumes. [Toronto]: Doubleday Canada, 2008.

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A Cure for All Diseases. Harper Collins, 2008.

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Hill, Reginald. Cure for All Diseases. HarperCollins Publishers Limited, 2009.

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A Cure for All Diseases. Glasgow: HarperCollins, 2008.

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Book chapters on the topic "Paschen curve"

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Ghaleb, Fatiha, Soumia Bendella, Wafà Benstaali, and Ahmed Belasri. "Calculation of the Paschen Curve by Solving of the Self-sustaining Condition for Different Mixtures." In ICREEC 2019, 475–82. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5444-5_59.

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Conference papers on the topic "Paschen curve"

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Loureiro, J., H. Fernandes, H. Oosterbeek, and G. Harkema. "A Paschen Curve experiment for e-lab." In 2013 2nd Experiment@ International Conference (exp.at'13). IEEE, 2013. http://dx.doi.org/10.1109/expat.2013.6703023.

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Sili, E., F. Koliatene, and J. P. Cambronne. "Pressure and temperature effects on the paschen curve." In 2011 IEEE Conference on Electrical Insulation and Dielectric Phenomena - (CEIDP 2011). IEEE, 2011. http://dx.doi.org/10.1109/ceidp.2011.6232695.

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Khrabrov, Alexander V., Liang Xu, Igor D. Kaganovich, and Timothy J. Sommerer. "Paschen Curve for Helium in 100–1000 KV Range." In 2017 IEEE International Conference on Plasma Science (ICOPS). IEEE, 2017. http://dx.doi.org/10.1109/plasma.2017.8496335.

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Carey, W. J., A. J. Wiebe, R. D. Nord, and L. L. Altgilbers. "Characterization of Paschen curve anomolies at high P*D values." In 2011 IEEE Pulsed Power Conference (PPC). IEEE, 2011. http://dx.doi.org/10.1109/ppc.2011.6191503.

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"Study on The Paschen Curve of Air Discharge under Repetitive Pulse Voltage." In 2021 IEEE 4th International Electrical and Energy Conference (CIEEC). IEEE, 2021. http://dx.doi.org/10.1109/cieec50170.2021.9511037.

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Kozyrev, Andrey, Yury Korolev, Natalia Semeniuk, and Aleksandr Kokovin. "Physical Kinetics of a Gas Breakdown at Left Branch of Paschen Curve." In 2018 28th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV). IEEE, 2018. http://dx.doi.org/10.1109/deiv.2018.8537047.

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Nejat, Cyrus. "Nejat Laws for Plasma Behavior Between two Plates with Paschen Curve Analysis." In 2020 IEEE International Conference on Plasma Science (ICOPS). IEEE, 2020. http://dx.doi.org/10.1109/icops37625.2020.9717568.

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Satir, Mert, and Murat Celik. "Characteristics of an argon DC glow discharge and effect of cathode material on paschen curve and cathode temperature." In 2015 IEEE International Conference on Plasma Sciences (ICOPS). IEEE, 2015. http://dx.doi.org/10.1109/plasma.2015.7179581.

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Kozyrev, A. V., Yu D. Korolev, and N. S. Semenyuk. "THE KINETIC MODEL OF FORMATION VOLUME DISCHARGE ON THE LEFT BRANCH OF THE PASCHEN CURVE WITH CATHODIC INITIATION OF BREAKDOWN." In Plasma emission electronics. Buryat Scientific Center of SB RAS Press, 2018. http://dx.doi.org/10.31554/978-5-7925-0524-7-2018-21-25.

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Harris, Scott M., and Axel Mellinger. "Nitrogen and air Paschen curves for dielectric barrier discharges in μm-sized voids." In 2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena - (CEIDP). IEEE, 2015. http://dx.doi.org/10.1109/ceidp.2015.7352107.

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Reports on the topic "Paschen curve"

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Scholfield, David W. Investigation of the Paschen Curve of Nitrogen via the Application of Nanosecond Pulsed ElectroMagnetic Radiation. Fort Belvoir, VA: Defense Technical Information Center, December 1994. http://dx.doi.org/10.21236/ada290129.

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