Effect of a Sudden Impulse in Electron Temperature on the Polar Wind: A Time-Dependent Semi-Kinetic Model
- Gordon R. Wilson
Published Online: 18 MAR 2013
Copyright 1991 by the American Geophysical Union.
Modeling Magnetospheric Plasma Processes
How to Cite
Ho, C.W., Horwitz, J. L. and Wilson, G. R. (1991) Effect of a Sudden Impulse in Electron Temperature on the Polar Wind: A Time-Dependent Semi-Kinetic Model, in Modeling Magnetospheric Plasma Processes (ed G. R. Wilson), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM062p0105
- Published Online: 18 MAR 2013
- Published Print: 1 JAN 1991
Print ISBN: 9780875900285
Online ISBN: 9781118663905
- Space plasmas—Mathematical models—Congresses;
- Magnetosphere—Mathematical models—Congresses
The time-dependent semi-kinetic model that Wilson et al.  developed is used to investigate the effects on the polar wind outflow subjected to an abrupt electron temperature increase and then decrease. Immediate effects which can be seen are the formation of H+ density depletions and O+ density enhancements at the lower boundary of the simulation region which subsequently travelling up the flux tube. ‘Kinetic phenomena' such as ion dispersion and multiple streams are observed. Steep density gradients are formed but they are smoothed out by dispersion as they propagate along the flux tube. Such effects are indications of the advantages of the kinetic model in simulating plasma outflows when details of the distribution function are desired.