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Simulation study of...
Simulation study of surfing acceleration in magnetized space plasmas
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- Eliasson, B. (författare)
- Fakultät f Physik und Astronomie, Institut f Theoretische Physik IV Ruhr-Universität Bochum
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- Dieckmann, Mark E, 1969- (författare)
- Ruhr-Universität Bochum
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- Shukla, P. K. (författare)
- Fakultät f Physik und Astronomie, Institut f Theoretische Physik IV Ruhr-Universität Bochum
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(creator_code:org_t)
- 2005-05-27
- 2005
- Engelska.
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Ingår i: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 7
- Relaterad länk:
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We present a numerical study of the surfing mechanism in which electrons are trapped in Bernstein-Greene-Kruskal (BGK) modes, and are accelerated across the magnetic field direction by the Lorentz force in magnetized space plasmas. The BGK modes are the product of an ion-beam Buneman instability that excites large-amplitude electrostatic upper-hybrid waves in the plasma. Our study, which is performed with particle-in-cell (PIC) and Vlasov codes, reveals the stability of the BGK mode as a function of the magnetic field strength and the ion beam speed. It is found that the surfing acceleration is more effective for a weaker magnetic field owing to the longer lifetime of the BGK modes. The importance of our investigation to electron acceleration in astrophysical environments has been emphasized. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
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- TECHNOLOGY
- TEKNIKVETENSKAP
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