Mathematics – Logic
Scientific paper
Dec 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9521203z&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Dec. 1, 1990, p. 21203-21211. Research supported by NASA, CNPq, Conse
Mathematics
Logic
10
Atmospheric Ionization, Cometary Atmospheres, Magnetohydrodynamic Turbulence, Solar Activity Effects, Solar Wind, Polarization (Waves), Ring Currents, Solar Wind Velocity
Scientific paper
The temporal evolution of the distribution function of newborn ions under the influence of intrinsic low-frequency solar wind turbulences is studied. In particular, an initial ring-beam distribution of newborn ions under the influence of hydromagnetic waves is considered. A simplified treatment of the resonance broadening effect is given, and its role in the pickup process is discussed. Two different configurations of wave polarization amd direction of propagation are considered. The conditions that lead either to the formation of anisotropic shells as a long-duration transient state or to rapid isotropization of the ion pitch angle distribution are discussed, as are the conditions which lead to significant acceleration of the ions.
Yoon Peter H.
Ziebell L. F.
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