HR: 0800h
AN: SM51B-0527    [Abstracts]
TI: Complex interplay of micro/macro scales in momentum creation and anomalous transport in magnetotail plasmas: simulation and comparison with laboratory experiments
AU: * Innocenti, M
EM: mauna.loa@alice.it
AF: LANL, MS:K717, Los Alamos, 87545, United States
AU: Lapenta, G
EM: giovanni.lapenta@wis.kuleuven.be
AF: CPA, KU Leuven, Celestijnenlaan, Heverlee, 3001, Belgium
AU: Lapenta, G
EM: giovanni.lapenta@wis.kuleuven.be
AF: LANL, MS:K717, Los Alamos, 87545, United States
AB: We address the coupling of drift instabilities in the lower-hybrid range with the large scale dynamics of the magnetotail. We consider two ways in which microinstabilities affect large scales: anomalous resistivity and large scale momentum creation. First, on anomalous resistivity, we present a new approach to analyze non- linear kinetic simulations and to extract the role of wave-particle interaction in momentum creation. The approach is applied to the lower-hybrid drift instability where it is shown that the anomalous resistivity generated does not penetrate in the plasma even when electromagnetic fluctuations are considered. Second, on large-scale momentum creation we show how fluctuations in the drift range lead to large scale momentum creation over the whole magnetotail region. An analogy with spontaneous momentum creation in laboratory plasmas (focusing especially on Alcator C-Mod [W. D. Lee and et al., Phys. Rev. Lett. 91, 205003 (2003)]) will be presented.
DE: 2744 Magnetotail
DE: 7839 Nonlinear phenomena (4400, 6944)
DE: 7859 Transport processes
DE: 7867 Wave/particle interactions (2483, 6984)
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting