On deformation of electron holes in phase spaceR. A. Treumann1, 2, C. H. Jaroschek3 and R. Pottelette4
1 Department of Geophysics, Munich University - Theresienstr. 41, D-80333 Munich, Germany, EU
2 Department of Physics and Astronomy, Dartmouth College - Hanover, NH 03755, USA
3 Department of Earth and Planetary Sciences, Tokyo University - Tokyo, Japan
4 CETP/CNRS - St. Maur des Fossés Cedex, France, EU
received 23 October 2008; accepted in final form 19 November 2008; published December 2008
published online 12 January 2009
This letter shows that for particularly shaped background particle distributions the momentum exchange between phase space holes and the distribution causes acceleration of the holes along the magnetic field. In the particular case of a non-symmetric ring distribution (ring with loss cone) this acceleration is non-uniform in phase space being weaker at larger perpendicular velocities thus causing the deformation of the hole in phase space.
94.30.Aa - Auroral phenomena in magnetosphere.
94.20.wj - Wave/particle interactions.
94.05.Dd - Radiation processes.
© EPLA 2008