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Hose instability and wake generation by an intense electron beam in a self-ionized gas

The propagation of an intense relativistic electron beam through a gas that is self-ionized by the beam's space charge and wakefields is examined analytically and with 3D particle-in-cell simulations. Instability arises from the coupling between a beam and the offset plasma channel it creates w...

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Bibliographic Details
Published in:Physical review letters 2006-02, Vol.96 (4), p.045001-045001, Article 045001
Main Authors: Deng, S, Barnes, C D, Clayton, C E, O'Connell, C, Decker, F J, Fonseca, R A, Huang, C, Hogan, M J, Iverson, R, Johnson, D K, Joshi, C, Katsouleas, T, Krejcik, P, Lu, W, Mori, W B, Muggli, P, Oz, E, Tsung, F, Walz, D, Zhou, M
Format: Article
Language:English
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Summary:The propagation of an intense relativistic electron beam through a gas that is self-ionized by the beam's space charge and wakefields is examined analytically and with 3D particle-in-cell simulations. Instability arises from the coupling between a beam and the offset plasma channel it creates when it is perturbed. The traditional electron hose instability in a preformed plasma is replaced with this slower growth instability depending on the radius of the ionization channel compared to the electron blowout radius. A new regime for hose stable plasma wakefield acceleration is suggested.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.96.045001