TY - CHAP
T1 - Energization of ions by bimodal intermittent fluctuations
AU - Tam, Sunny W.Y.
AU - Chang, Tom
N1 - Funding Information:
The authors are indebted to G.B. Crew, J. R. Jasperse, P.M. Kintner, and J.M. Retterer for discussions. This research was partially supported by grants from NASA and NSF.
PY - 2005
Y1 - 2005
N2 - Sporadic and localized interactions of coherent structures in magnetized plasmas can be the source for the observed broadband, low frequency electric field fluctuations composed of nonpropagating spatiotemporal oscillations, and propagating modes. This chapter demonstrates that the particle interactions with this type of bimodal intermittent turbulence can lead to the efficient energization of the auroral ions. For intermittent turbulence, the probability distributions of the fluctuations are non-Gaussian and the effects of the intermittency can manifest in the higher order correlations beyond the second order diffusion coefficient. Global auroral conic simulations to study the effect of intermittency on particle energization processes have been performed.
AB - Sporadic and localized interactions of coherent structures in magnetized plasmas can be the source for the observed broadband, low frequency electric field fluctuations composed of nonpropagating spatiotemporal oscillations, and propagating modes. This chapter demonstrates that the particle interactions with this type of bimodal intermittent turbulence can lead to the efficient energization of the auroral ions. For intermittent turbulence, the probability distributions of the fluctuations are non-Gaussian and the effects of the intermittency can manifest in the higher order correlations beyond the second order diffusion coefficient. Global auroral conic simulations to study the effect of intermittency on particle energization processes have been performed.
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U2 - 10.1016/B978-044451881-1/50027-7
DO - 10.1016/B978-044451881-1/50027-7
M3 - Chapter
AN - SCOPUS:72049123325
SN - 9780444518811
SP - 375
EP - 381
BT - Multiscale Coupling of Sun-Earth Processes
PB - Elsevier
ER -