Measurements of hose instability of a relativistic electron beam

Lauer, E.J.; Briggs, R.J.; Fessenden, T.J.; Hester, R. E.; Lee, Edward P.

doi:10.1063/1.862375

Cited by 55 publications

(16 citation statements)

References 5 publications

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“…It is instructive to contrast this mechanism with other well-known transverse instabilities of a beam-plasma system. For example, the resistive-hose instability [36,45,46] arises due to dissipation of eddy currents in a highly collisional overdense plasma. In this case, nonlinear focusing and the resulting distribution in betatron period are intrinsic features of the self-pinched equilibrium.…”

Section: Discussionmentioning

confidence: 99%

Flute instability of an ion-focused slab electron beam in a broad plasma

et al. 1992

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An intense relativistic electron beam with an elongated cross section, propagating in the ion-focused regime through a broad, uniform, unmagnetized plasma, is shown to suffer a transverse flute instability. This instability arises from the electrostatic coupling between the beam and the plasma electrons at the ion-channel edge. The instability is found to be absolute and the asymptotic growth of the flute amplitude is computed in the "frozen-field" approximation and the large skin-depth limit. The minimum growth length is shown to be much less than the betatron period, with the consequence that focusing is rendered ineffective. It is further shown that growth is much reduced when the beam propagates through a narrow channel where the ion density greatly exceeds that of the surrounding plasma. In this limit, a modest spread in betatron frequency produces rapid saturation. The effect of plasma electron collisions is also considered. Results of beam breakup simulations are noted.

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Section: Discussionmentioning

confidence: 99%

Flute instability of an ion-focused slab electron beam in a broad plasma

et al. 1992

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“…Показано, что усиление токовой нейтрализации приводит к существенному росту данной неустойчивости, а фазовое перемешивание и процесс многократного рассеяния электронов пучка на атомах фоновой среды являются стабилизирующими фактором. Введение В последние сорок лет внимание исследователей привлекают вопросы распространения релятивистских пучков заряженных частиц в плотных и разреженных газоплазменных средах [1][2][3][4][5][6][7][8][9][10]. Особое место в этой проблеме занимает задача устойчивого прохождения указанных пучков на определенные расстояния.…”

Section: (поступило в редакцию 7 апреля 2016 г в окончательной редакunclassified

“…Известно, что среди резистивных крупномасштаб-ных неустойчивостей релятивистских электронных пуч-ков (РЭП), распространяющихся в плотных газо-плазменных средах, наибольшими инкрементами на-растания обладают резистивная шланговая неустойчи-вость (РШН) и резистивная перетяжечная неустой-чивость (РПН) РЭП [4][5][6][7]. Для последней неустой-чивости характерно возбуждение аксиально-симмет-ричных возмущений радиуса пучка и, следовательно, его плотности тока.…”

Section: (поступило в редакцию 7 апреля 2016 г в окончательной редакunclassified

Влияние Процесса Токовой Нейтрализации И Многократного Кулоновского Рассеяния На Пространственную Динамику Резистивной Перетяжечной Неустойчивости Релятивистского Электронного Пучка, Распространяющегося В Омической Плазме

Колесников¹,

Мануйлов²,

Петров³

et al. 2017

Журнал Технической Физики

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“…Nonetheless, often with the aid of numerical simulations, there has been considerable recent analytical progress in applying the Vlasov-Maxwell equations to investigate the detailed equilibrium and stability properties of intense charged particle beams. These investigations include a wide variety of collective interaction processes ranging from the electrostatic Harris instability [30 -36] and electromagnetic Weibel instability [37][38][39][40][41][42] driven by large temperature anisotropy with T ?b T kb in a one-component non-neutral ion beam, to wall-impedance-driven collective instabilities [43][44][45]49], to the dipole-mode two-stream instability for an intense ion beam propagating through a partially neutralizing electron background [46 -60], to the resistive hose instability [61][62][63][64][65][66][67], the sausage and hollowing instabilities [68][69][70], and the multispecies Weibel and twostream instabilities [71][72][73] for an intense ion beam propagating through a background plasma [74 -77], to the development of a nonlinear stability theorem [20,21] in the smooth-focusing approximation.…”

Section: Introductionmentioning

confidence: 99%

Collective instabilities and beam-plasma interactions in intense heavy ion beams

Davidson

Kaganovich

Qin

et al. 2004

Phys. Rev. ST Accel. Beams

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This paper presents a survey of the present theoretical understanding of collective processes and beam-plasma interactions affecting intense heavy ion beam propagation in heavy ion fusion systems. In the acceleration and beam transport regions, the topics covered include discussion of the conditions for quiescent beam propagation over long distances; the electrostatic Harris-type instability and the transverse electromagnetic Weibel-type instability in strongly anisotropic, one-component non-neutral ion beams; and the dipole-mode, electron-ion two-stream instability driven by an (unwanted) component of background electrons. In the plasma plug and target chamber regions, collective processes associated with the interaction of the intense ion beam with a charge-neutralizing background plasma are described, including the electrostatic electron-ion two-stream instability, the electromagnetic Weibel instability, and the resistive hose instability. Operating regimes are identified where the possible deleterious effects of collective processes on beam quality are minimized.

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Measurements of hose instability of a relativistic electron beam

Abstract: Variable collision frequency effects on hose and sausage instabilities in relativistic electron beams

Cited by 55 publications

References 5 publications

Flute instability of an ion-focused slab electron beam in a broad plasma

Flute instability of an ion-focused slab electron beam in a broad plasma

Collective instabilities and beam-plasma interactions in intense heavy ion beams

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