Ion dynamics in multiple electrostatic waves in a magnetized plasma. I. Coherent acceleration

D. Bénisti, A.K. Ram, A. Bers

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Abstract

A new phenomenon of coherent acceleration of ions by a discrete spectrum of electrostatic waves propagating perpendicularly to a uniform magnetic field is described. It allows the energization of ions whose initial energies correspond to a region of phase space that is below the chaotic domain. The ion orbits below the chaotic domain are described very accurately using a perturbation analysis to second order in the wave amplitudes. This analysis shows that the coherent acceleration takes place only when the wave spectrum contains at least two waves whose frequencies are separated by an amount close to an integer multiple of the cyclotron frequency. The way the ion energization depends on the wave numbers and wave amplitudes is also presented in detail using the results of the perturbation analysis. © 1998 American Institute of Physics.
Original languageEnglish
Pages (from-to)3224 - 3232
Number of pages9
JournalPhysics of Plasmas
Volume5
Issue number9
DOIs
Publication statusPublished - 1998
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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