期刊
ASTROPHYSICAL JOURNAL
卷 711, 期 2, 页码 997-1007出版社
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/711/2/997
关键词
magnetic fields; plasmas; scattering; turbulence
资金
- Deutsche Forschungsgemeinschaft (DFG) [SH 93/3-1]
- [Schl 201/19-1]
The transport of charged particles (e. g., cosmic rays) in astrophysically relevant, turbulent magnetic fields (like they exist, e. g., in the solar wind) is investigated. Generic theoretical models-using concepts and insights developed recently in the context of magnetic confinement fusion research-are applied to the present problem and confirmed by means of numerical simulations. At high energies, a novel transport regime is found, in which the particles decorrelate on a gyro-orbit timescale. Explicit scaling laws for the cross-field diffusivities in various limits are derived.
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