Mathematics – Logic
Scientific paper
Oct 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9517075z&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Oct. 1, 1990, p. 17075-17083. Research supported by CNPq and Conselho
Mathematics
Logic
17
Cometary Atmospheres, Ion Distribution, Ionic Diffusion, Magnetohydrodynamic Waves, Plasma Turbulence, Plasma-Particle Interactions, Solar Wind, Digital Simulation, Pitch (Inclination)
Scientific paper
The objective of the present study is to understand the interaction of the solar wind with newborn ions in far upstream regions of a comet where the level of intrinsic turbulence is moderately low. Based on the assumption that quasi-linear theory is adequate and applicable, the pitch angle diffusion process and the time evolution of the newborn ion distribution function are investigated. Numerical solutions to the quasi-linear diffusion equation, including the effect of resonance broadening and that of continuous creation of newborn ions due to the ionization process, are obtained under several assumptions and approximations. It is found that theoretical results are consistent with the Giotto observations recently reported by Neugebauer et al. (1989).
Winske Dan
Wu Shang-Chen
Yoon Peter H.
Ziebell L. F.
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