Academic literature on the topic 'Weibel-type instabilities'

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Journal articles on the topic "Weibel-type instabilities"

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Lazar, M., R. Schlickeiser, R. Wielebinski, and S. Poedts. "COSMOLOGICAL EFFECTS OF WEIBEL-TYPE INSTABILITIES." Astrophysical Journal 693, no. 2 (2009): 1133–41. http://dx.doi.org/10.1088/0004-637x/693/2/1133.

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Lazar, M., R. Schlickeiser, and T. Skoda. "Cosmological magnetic field seeds produced by the Weibel instabilities." Proceedings of the International Astronomical Union 6, S271 (2010): 387–88. http://dx.doi.org/10.1017/s1743921311017923.

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AbstractThe source of the cosmological magnetic field is still unknown because the widely invoked dynamo processes are only able to regenerate and amplify some initial magnetic field seeds. In the hot and highly ionized intergalactic matter such magnetic field seeds can easily be produced by the (electro-)magnetic instabilities of Weibel type. Here we discuss suplementary mechanisms that can make these Weibel created fields to evolve at large scales presently observed in galaxies and clusters and can also enhance these magnetic field seeds after the dissipation.
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SUGIE, M., K. OGAWA, and T. OKADA. "DEVELOPMENT OF ELECTROMAGNETIC WEIBEL-TYPE INSTABILITIES IN ANISOTROPIC PLASMAS." International Journal of Modern Physics B 21, no. 03n04 (2007): 637–41. http://dx.doi.org/10.1142/s0217979207042458.

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LAZAR, M., A. SMOLYAKOV, R. SCHLICKEISER, and P. K. SHUKLA. "A comparative study of the filamentation and Weibel instabilities and their cumulative effect. I. Non-relativistic theory." Journal of Plasma Physics 75, no. 1 (2009): 19–33. http://dx.doi.org/10.1017/s0022377807007015.

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AbstractA comparative study of the electromagnetic instabilities in anisotropic unmagnetized plasmas is undertaken. The instabilities considered are the filamentation and Weibel instability, and their cumulative effect. Dispersion relations are derived and the growth rates are plotted systematically for the representative cases of non-relativistic counterstreaming plasmas with isotropic or anisotropic velocity distributions functions of Maxwellian type. The pure filamentation mode is attenuated by including an isotropic Maxwellian distribution function. Moreover, it is observed that counterstr
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Inglebert, A., A. Ghizzo, T. Reveille, D. Del Sarto, P. Bertrand, and F. Califano. "A multi-stream Vlasov modeling unifying relativistic Weibel-type instabilities." EPL (Europhysics Letters) 95, no. 4 (2011): 45002. http://dx.doi.org/10.1209/0295-5075/95/45002.

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Skoutnev, V., A. Hakim, J. Juno, and J. M. TenBarge. "Temperature-dependent Saturation of Weibel-type Instabilities in Counter-streaming Plasmas." Astrophysical Journal 872, no. 2 (2019): L28. http://dx.doi.org/10.3847/2041-8213/ab0556.

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Sarrat, M., D. Del Sarto, and A. Ghizzo. "Fluid description of Weibel-type instabilities via full pressure tensor dynamics." EPL (Europhysics Letters) 115, no. 4 (2016): 45001. http://dx.doi.org/10.1209/0295-5075/115/45001.

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STOCKEM, A., M. LAZAR, P. K. SHUKLA, and A. SMOLYAKOV. "A comparative study of the filamentation and Weibel instabilities and their cumulative effect. II. Weakly relativistic beams." Journal of Plasma Physics 75, no. 4 (2009): 529–43. http://dx.doi.org/10.1017/s002237780800768x.

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AbstractCounterstreaming plasma systems with intrinsic temperature anisotropies are unstable against the excitation of Weibel-type instabilities, namely, filamentation and Weibel instabilities, and their cumulative effect. Here, the analysis is extended to counterstreaming plasmas with weakly relativistic bulk velocities, while the thermal velocities are still considered to be non-relativistic. Such plasma systems are relevant for fusion plasma experiments and the more violent astrophysical phenomena, such as jets in gamma-ray burst sources. Simple analytical forms of the dispersion relations
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OKADA, T., I. SAJIKI, and K. SATOU. "Weibel instability by ultraintense laser pulses." Laser and Particle Beams 17, no. 3 (1999): 515–18. http://dx.doi.org/10.1017/s0263034699173191.

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Particle-in-cell (PIC) simulations show that an anisotropic electron velocity distribution is demonstrated by ultraintense laser pulses in underdense plasmas. Recently, it is reported that the anisotropy has been experimentally demonstrated in laser-produced plasmas. It is also pointed out that gigagauss magnetic fields are generated by ultraintense laser pulses. We have already published that the Weibel-type electromagnetic instabilities can be theoretically excited by electrons in a velocity distribution with anisotropic temperature. If these electromagnetic waves are excited, the target may
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Inglebert, A., A. Ghizzo, T. Reveille, D. Del Sarto, P. Bertrand, and F. Califano. "Multi-stream Vlasov model for the study of relativistic Weibel-type instabilities." Plasma Physics and Controlled Fusion 54, no. 8 (2012): 085004. http://dx.doi.org/10.1088/0741-3335/54/8/085004.

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Dissertations / Theses on the topic "Weibel-type instabilities"

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Sarrat, Mathieu. "Physique des instabilités de type Weibel." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0162/document.

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Les instabilités de type Weibel naissent si la distribution des vitesses du plasma présente une anisotropie. Elles entraînent la génération d’un champ magnétique dû à la formation de filaments de courant ainsi qu’une activité électrostatique importante. Ces phénomènes de base apparaissent dans de nombreuses situations, naturelles (vent solaire, jets relativistes) ou expérimentales (interaction laser-plasma) : les plasmas dans lesquels ils naissent peuvent être relativistes ou non, magnétisés ou non, collisionnels ou non, ce qui pose la question du choix du modèle à utiliser pour les décrire. L
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Betar, Homam. "Kinetic Effects in Magnetic Reconnection." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0043.

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Les plasmas sont des systèmes gazeux d'ions et d'électrons qui interagissent avec les champs électromagnétiques et affichent des propriétés collectives. Parmi ceux-ci, il y a la notion de "connexion" de lignes magnétiques. Ceci exprime le fait que, dans des régimes dans lesquels les particules chargées s'enroulent suffisamment vite le long des lignes d'induction magnétique, ces dernières sont liées au mouvement du plasma massif et acquièrent une identité topologique qui leur interdit de se rompre, se croiser et se reconnecter. Cette identité topologique peut cependant être localement violée gr
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Inglebert, Aurélie. "Modèle Vlasov-Maxwell pour l'étude des instabilités de type Weibel." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0149/document.

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L'origine de champs magnétiques observés dans les plasmas de laboratoire et d'astrophysique est l'un des problèmes récurrents en physique des plasmas. À cet égard, les instabilités de type Weibel sont considérées d'une grande importance. Ces instabilités ont pour origine une anisotropie de température (instabilité de Weibel) et des moments des électrons (instabilité de filamentation de courant). L'objectif principal de cette thèse est l'étude théorique et numérique de ces instabilités dans un plasma non collisionnel en régime relativiste. Le premier aspect de ce travail est l'étude du régime n
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Tsai, Hsiang-Ming, and 蔡翔名. "A Preliminary Research on Alternative Lightwave Amplification Using Weibel-type Instabilities." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/6tszqg.

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碩士<br>國立虎尾科技大學<br>光電與材料科技研究所<br>99<br>Even though the field of EM wave amplification for microwaves has been rather mature and enjoying many available technologies, amplifying a lightwave already left the laser resonant cavity can be a tough problem with very little choice. Long before erbium-doped optic fiber amplifier (EDFA) has become a reality and mass produced, other lightwave amplification schemes have been considered, even realized, and tested. Among them, the most noticed are the Stimulated Raman Scattering (SRS) and the Stimulated Brillouin Scattering (SBS). Comparing with the EDFA, a
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Conference papers on the topic "Weibel-type instabilities"

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Satou, Kazuhito, and Toshio Okada. "PIC code simulation and theoretical analysis on generation of Weibel-type instabilities." In Laser interaction and related plasma phenomena: 12th international conference. AIP, 1996. http://dx.doi.org/10.1063/1.50471.

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