A numerical electromagnetic linear dispersion relation for Maxwellian ring-beam velocity distributions

Takayuki Umeda, Shuichi Matsukiyo, Takanobu Amano, Yoshizumi Miyoshi

    Research output: Contribution to journalArticle

    15 Citations (Scopus)

    Abstract

    A positive slope in a velocity distribution function perpendicular to the ambient magnetic field, such as due to a loss cone or ring velocity distribution, can become a free energy source for the excitation of various plasma waves. Since there exists no analytic expression for integrals of Maxwellian ring velocity distribution functions, their linear properties have previously been studied using several approximations or modeled distributions. In this paper, a numerical method for analyzing the linear dispersion relation for Maxwellian ring-beam velocity distributions is developed. The obtained linear properties are confirmed by direct comparison with full particle simulation results.

    Original languageEnglish
    Article number072107
    JournalPhysics of Plasmas
    Volume19
    Issue number7
    DOIs
    Publication statusPublished - Jul 1 2012

    Fingerprint

    velocity distribution
    electromagnetism
    rings
    distribution functions
    energy sources
    plasma waves
    cones
    free energy
    slopes
    approximation
    magnetic fields
    excitation
    simulation

    All Science Journal Classification (ASJC) codes

    • Condensed Matter Physics

    Cite this

    A numerical electromagnetic linear dispersion relation for Maxwellian ring-beam velocity distributions. / Umeda, Takayuki; Matsukiyo, Shuichi; Amano, Takanobu; Miyoshi, Yoshizumi.

    In: Physics of Plasmas, Vol. 19, No. 7, 072107, 01.07.2012.

    Research output: Contribution to journalArticle

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