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Heating of Heavy Ions by Interplanetary Coronal Mass Ejection (ICME) Driven Collisionless Shocks  

Kelly Korreck   Submitted: 2006-12-28 15:31

We focus on shocks driven by Interplanetary Coronal Mass Ejections (ICMEs) which heat the solar wind and accelerate particles. This study focuses specifically on the heating of heavy ions caused by these shocks. This study utilizes thermal properties measured by the Solar Wind Ion Composition Spectrometer (SWICS) aboard the Advanced Composition Explorer (ACE) spacecraft to examine heavy ion heating. This instrument provides data for many heavy ions not previously available for detailed study, such as Oxygen (O6+, O7+), Carbon (C5+ , C6+), and Iron (Fe10+). The ion heating is found to depend critically on the upstream plasma beta, mass per charge ratio of the ion, M/Q, and shock magnetic angle, theta_bn . Similar to past studies (Schwartz et al. 1988), there is no strong dependence of ion heating on Mach number. The heating mechanism described in Lee & Wu (2000) is examined to explain the observed heating trends in the heavy ion thermal data.

Authors: K. E. Korreck, T.H. Zurbuchen, S. T. Lepri, J.M. Raines
Projects: None

Publication Status: ApJ (Accepted)
Last Modified: 2006-12-28 16:40
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Heating of Heavy Ions by Interplanetary Coronal Mass Ejection (ICME) Driven Collisionless Shocks

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